Why Do Houses Generally Have Cement Floors?

Why Do Houses Generally Have Cement Floors
Which flooring is the best for houses in India? While a number of options have emerged for flooring in India, many consumers still want to consider cement flooring, something many of us had in our childhood homes. While modern options such as tiles, wooden flooring, marble and other stones provide their own benefits, it is important to know what a cement-based floor can offer you.

Cement floors are an excellent choice for most parts of the house, especially the outdoor areas. Among all the flooring options available today, cement definitely stands out due to its numerous advantages and characteristics. From decorating your outdoor area to making a style statement for your home interiors, cement floors can be a game-changer.

Benefits of Cement Floors in House 1. Endless Design Options When it comes to stylish home designs, cement flooring might not be the first thing that pops into your head. Some people may even assume it to be dull, unwelcoming, or just unfit for a modern house.

  • However, that’s not true.
  • From modish industrial accents to striking marble-like, high gloss sheen, cement floors can be tasteful additions to your dream home.
  • You can also try different colours, patterns, textures, and finishing options to uncover endless design options.
  • Various dyes, finishes, and surface treatments are available to help you achieve the right colour, texture, and effect for your floor.

Whether you want a stone, tile, or limestone-like appearance or a grainy wood texture, you can easily customise your floor, giving it the desired look and feel without breaking the bank. Besides this, cement floors provide plenty of immediate and long-term advantages that other flooring options don’t.2.

  • Durability and Longevity Cement floors are incredibly durable and long-lasting.
  • With cement flooring, you get an eye-catching surface that’s also practical and functional.
  • Unlike other flooring options, it will not deteriorate over time or be damaged by furniture, stains, dropped items, high heels, or pet claws.

You cannot dent or scratch cement floors easily. When properly sealed and maintained, they can last for decades without requiring replacements.3. Low Maintenance The characteristics that make cement floors solid and durable also make them easy to maintain.

Properly sealed cement flooring exhibits excellent resistance to dirt, dust, stains, spills, grit, and hard impacts. Upon installation, the only maintenance your floors will require is a bit of sweeping and damp mopping to keep them as good as new. They are not as porous as other flooring options and, therefore, do not harbour dirt, dust, or allergens, making them easier to clean.

Besides this, their hard surface makes the floor resistant to cracking, scratching, or denting, unlike tile or wood floors.4. Sustainability Cement floors can be a sustainable option in more ways than one. Although cement is often criticised for being one of the biggest contributors to greenhouse gas emissions, you can opt for green or blended cement that is more environmentally friendly than ordinary cement.

  1. In addition, cement flooring is typically done in the form of concrete slabs.
  2. You can use existing concrete slabs to prevent the consumption of new materials, which can be an excellent way to style your house without harming the environment.
  3. Concrete is also highly recyclable, and even the most worn-down slabs can be crushed and used to prepare new concrete for driveways, sidewalks, patios, roads, and other structures.6.

Cost-Effectiveness Compared to other flooring options, such as wood and tile, cement flooring is incredibly cost-effective. The average cost per square foot of plain slabs is highly affordable, especially if you opt for pre-existing slabs. Plus, with so many design and customisation options, you can easily polish and treat these slabs to make sure they complement your dream house without blowing your entire budget.

It is easy to install It can withstand external threats, such as fire, wind and insects, thus preventing damage and safety risks.

Choose the Best Quality Cement for Your Dream Home To wrap it up, the performance advantages of cement floors clearly outweigh the benefits of other flooring materials. So, if you have decided to go for cement floors but still have some confusion regarding which cement to buy, then look no further.

Dalmia Cement is a leading cement manufacturer in India, offering a wide variety of speciality, blended, and green cement for various construction requirements. With a constant focus on quality, innovation and sustainability, our environment-friendly cement provides durable and high-strength construction for years to come.

You can also consult a Dalmia Build Advisor who will visit your construction site to suggest the best cement and construction practices according to your needs, budget, and location. Need more information? Get in touch with us today at 1800 2020 or and let our technical service executives take care of your queries.

Why is a cement floor laid?

A cement floor is not laid out in a single piece. The floor is put in small sections with gaps between them. It is done to avoid cracking of the floor due to expansion in summer and contraction in winter.Q.

What are the advantages of cement flooring?

The Pros and Cons of Concrete Flooring Concrete is incredibly hard and strong — no wonder it’s used for streets and driveways! As a flooring material, it has all the strength and durability of a highway. You can’t scratch or dent a concrete floor. It also can make a fashion statement.

Added dyes and etching techniques can turn gray, boring concrete into your home’s star attraction. Cost ranges from downright cheap ($2 per square foot) to relatively pricey ($30 per square foot, depending on finishes). Obviously, concrete is heavy. If you’re putting in new concrete floors on grade, the weight won’t be a concern.

If you’re looking to install concrete over a subfloor supported by joists, you’ll need a structural engineer to determine if your floor can stand the weight. Lightweight concrete may be a solution.

Low-maintenance: The same properties that make concrete floors so durable also make them easy to care for. Properly sealed concrete floors shrug off dirt, grit, stains, spills, and hard impacts. A little sweeping and damp mopping is all that’s required to keep them looking like new. Beautiful design options: Modern techniques for concrete finishing have moved concrete floors from ho-hum to luxurious. Adding dyes as the wet concrete is being mixed produces concrete in a huge range of earthy colors. Surface treatments such as acid stains, concrete stains and paint made for concrete floors can turn plain concrete into beautiful, one-of-a-kind finishes. Also, concrete can be stamped with rubber stencils to give it texture. Combined with the right dyes or coloring agents, finished concrete can be made to mimic ceramic tile, natural stone, brick, even dirt! Heated floors: For new construction or for concrete poured over an existing slab, you have the option to add — electrical cables or hot water tubes embedded in the concrete to create warm, comfy floors. Eco-friendly: Concrete does not deplete natural resources, requires less energy than other floor types to produce and is made (poured) locally. Concrete is good for indoor air quality because it inhibits mold, mildew and odors; contains no potentially harmful VOCs and can be finished with zero-VOC sealers. Concrete’s absorption of warm and cool air minimizes the need for heating and cooling. And concrete can be recycled and the surface cuts down on the need to discard waste, such as scraps of flooring and underlayment.

Hardness: There’s no denying that concrete is hard underfoot, a quality that some find uncomfortable. It’s also unforgiving — a dropped glass definitely won’t survive — and it may be a concern if there are small children or elderly folks in the household. Area rugs can help alleviate concerns. Moisture: In below-grade basements, moisture migrating up from underneath the slab may make concrete unacceptably damp and damage any surface treatments, such as paint. Proper sealing of the concrete helps, as does mitigation of any outside problem areas like leaky gutters and poor soil drainage. Cracking: Like it or not, even expertly installed concrete may develop cracks over time. That’s because the large expanse of a slab has to endure changes in temperature, moisture and settling. Colored cement paste and patching materials help disguise cracks.

Choose a range of colors applied to concrete in various methods.

Integral color is added to concrete during the mixing process. Stains produce a translucent finish with a one-of-a-kind look. Dyes, often mixed onsite, lend more vibrant shades. Colored hardeners are added to fresh concrete for surface-level color. Paint can also be applied to the concrete.

Depending on the look and feel you want to achieve, choose from a variety of textures, including troweled, smooth, or polished. Concrete can also be stamped (to create a pattern, such as tiled) or scored (patterned using a circular saw). Aggregates. Most interior floors are formed from a fine concrete mix, though some incorporate crushed stone or gravel for a rougher surface.

  • There are two general types of concrete floors: Existing concrete: The concrete slab already in your house can be enhanced with decorative treatments, such as stains and polishes.
  • Decorative overlay: Concrete overlays can be installed over certain existing hard-surface floor types to mask damage or offer a fresh new appearance.

How to Clean. Use gentle cleaners or vinegar to clean. Sweep, mop or vacuum regularly. Best for: Any room, especially kitchens, baths, basements and entryways. Pet friendly? Extremely. This is the gold standard for pet-proof floors. Concrete withstands scratches from claws, spilled water, and pet messes, and it won’t absorb odors.

Provide soft mats or pet beds for added comfort. Underlayment. Concrete floors generally require a level of felt paper, metal lath, and a base layer of concrete. Concrete rocks. It’s durable, stain-proof, waterproof, and chic, giving your room a sleek contemporary look. Concrete withstands wear, and it’s resistant to fire, stains, water, bacteria and odors.

It won’t scratch, it’s easy to clean, and the design is customizable. Concrete also contributes to good air quality, and it can help reduce energy bills when used properly. Keep in mind, though, that fragile objects will probably break if dropped on concrete, and standing on it for long periods can be uncomfortable.

  • Hairline cracks can appear over time on concrete floors with heavy traffic.
  • Concrete floors will need to be resealed regularly, and they have been known to produce an echo effect.
  • Concrete typically costs between $2 and $20 per square foot, installed.
  • Installation is generally best left to professionals.

: The Pros and Cons of Concrete Flooring

Is walking on cement floors all day?

Back Pain and Concrete – Unlike other surfaces, concrete has no give. This inflexibility affects the body. Standing or walking on concrete flooring every day can result in backaches, knee pain, swollen legs and sore feet. Left untreated, you may experience injuries and chronic pain.

Are concrete floors a problem?

Fixing a Concrete Floor: Common Problems to Look Out For Despite concrete flooring being a generally hard-wearing and long-lasting flooring option, they can succumb to damage over time, especially if the flooring has been improperly laid. The majority of poorly installed concrete floors stem from those practising their DIY skills.

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Improper concrete mixing combined with scatty layering and finishing can result in bubbling and air pockets in the concrete. Over time, these pockets will worsen and eventually crack, and these cracks will continue to expand the longer they are left unattended. However, there are times when concrete contractors face problems laying concrete.

Problems such as shrinkage, cracking and crazing although rare, can happen from time to time. This is why our team at CFS takes time to ensure we follow all the necessary steps to ensure our concrete floor process does not encounter any problems during installation.

How do you clean a cement floor?

How to Clean Concrete Floors Concrete is a sturdy material for indoor and outdoor floors. It’s durable, easy to clean and somewhat resistant but not impervious to stains. It’s porous and will soak up dirt, spills and harbor mildew. Tough as concrete is, it will need periodic scrubbing.

  • Here’s how to clean concrete, both indoors and out.
  • A power washer is the easiest way to clean concrete outdoors.
  • You should be able to blast away dirt, mildew and grime in an afternoon.
  • Rent one and read the instructions on how to use the machine before you start the project.
  • Spray the patio surface with a detergent and use a stiff brush to scrub it into the concrete.

Never use a metal-bristle brush. Metallic fibers can get trapped in the porous surface of the concrete and rust. Put on safety goggles and gloves. Turn on the pressure washer. Move the wand from one side, using the same motion as you would if you were mopping a floor.

  1. There are several options.
  2. You can use bleach, ammonia ( Note: never mix the two) and other commercial solutions.
  3. For a natural solution to stubborn stains on interior concrete floors, mix flour and hydrogen peroxide into a paste the consistency of peanut butter.
  4. Spread it over the stained area.
  5. Let sit overnight.

Then, scrape with a plastic-edged scraper tool. Trisodium phosphate (TSP) mixed with water and scrubbed onto the stained area with a nylon bristle brush can remove tough stains. Scrub until the stain is gone and rinse with a hose. TSP is available at home improvement stores.

  1. Muriatic acid can be used on outdoor floors to clean the toughest stains, like rust or dried grout.
  2. It’s a powerful, toxic material that should be used with extreme caution.
  3. Wear protective eyewear and gloves when using it and be sure to follow manufacturer instructions on how to clean concrete with muriatic acid.

For indoor concrete floors that are polished or stamped, you’ll need to take a gentler approach to how to clean it. You’ll just use a mop and a bucket of water mixed with a mild cleaner. Don’t use ammonia, bleach or any highly acidic substance on polished or stamped floors.

Some good cleaners include Castile soap, liquid dish detergent, stone cleaners and mild floor cleaners. Mix a solution, apply to floor with a wet mop and then rinse with a mop dipped in clean water. To make your concrete floors resistant to future stains, apply a concrete sealant. Use a paint roller to apply it to clean, primed concrete.

Start in the middle of the area and roll the sealant out to the edges. Floors need to be resealed every two to three years. Knowing how to clean concrete properly will keep the floors in your garage, workshop and house looking good as new. : How to Clean Concrete Floors

Are concrete floors cold in winter?

Are Concrete Floors Cold? Find a Contractor by postal code Brought to you by ConcreteNetwork.com

Why Do Houses Generally Have Cement Floors

Elton John Design Studios

The reality: Yes, concrete can be cold, but no more so than ceramic tile or natural stone flooring. The pluses:

Concrete doesn’t have to be cold. Its thermal properties give it the ability to store and radiate heat. By embedding radiant heating cables in concrete floors, for example, you can keep floors toasty warm in the winter and you can control the temperature level. If the home is built to take advantage of solar radiation entering through windows, concrete floors will absorb the heat from the sun to keep rooms warmer in the winter. In summer and in hot climates, a cooler floor can be an advantage and can actually help lower air conditioning costs.

: Are Concrete Floors Cold?

Are concrete floors healthy?

MAY 21 2018 | MATERIAL HANDLING – In 2016, the U.S. flooring market grew by 3.1%. But while that growth is certainly healthy, that doesn’t mean a business’s choice of flooring is healthy for employees. Concrete decks, for example, can put workers at a significant disadvantage in terms of their physical well-being.

  1. These floor systems have proven to put more strain on workers’ bodies, which can result in unnecessary discomfort, pain, and even injuries.
  2. Let’s take a closer look at the ergonomic disadvantages of concrete and how ResinDek ® industrial flooring can solve many of these issues.
  3. Research conducted by Dr.

Steve Lavender for Ohio State University’s Institute of Ergonomics found that those who worked on concrete flooring (as well as bar grate flooring) experienced increased tibial shock as compared to those who worked on ResinDek flooring. Essentially, working on concrete is the equivalent of adding an extra 12 pounds to your body, while working on bar grate adds an extra 18 pounds to your body.

All that additional weight results in a lot more physical strain (and sometimes pain) for employees who are already moving, loading, and packing products. Since these jobs are already quite physically demanding, the extra weight caused by flooring choice can make workers more prone to injuries. Not only does this put employees at risk, but it ultimately has an impact on the business’s bottom line due to time off, workers’ comp, and lost productivity.

The health problems associated with working or living on concrete flooring are well-documented. According to experts, concrete floor systems can cause everything from bunions and ingrown toenails to shin splints, lumbar strain, and achilles tendonitis.

It can also lead to lower back pain, stress fractures, knee pain, and worsening of arthritis symptoms. Basically, spending a lot of time walking on concrete flooring has the potential to cause harm to the feet, the legs, the back, and the entire physical being – making it extremely difficult to do one’s job well or even function to the fullest outside of work.

To minimize the negative effects of walking on concrete, employees should take care to wear proper footwear, stretch regularly, and take rests when needed. However, employees can preserve their employees’ health by choosing alternatives to concrete. ResinDek mezzanine floor systems, for instance, are much more comfortable to walk on, reduce the risk of injuries, and are more durable overall.

Is it healthy to live in a concrete house?

7. Healthy Homes – Concrete houses provide healthy environments with fewer airborne allergens, molds, and toxins than most wood-frame houses. A concrete wall system limits the infil­tra­tion of outside allergens to the inside of the house. Concrete resists mold and mildew more than wood.

Is living in a concrete house healthy?

Is concrete toxic for humans? – The WHO defines a toxic substance as one that has “adverse health effects caused by chemical, physical or biological agents on living organisms.” Emissions from engines or alcohol are toxic, together with certain building materials including fiberglass, PVC, synthetic paints, etc.

under some very specific conditions. However, it is worth noting that these elements are only toxic in certain phases of construction, which is why builders must use masks during use and ventilation. The use of PPE is essential when working with concrete in any of its stages, such as the manufacturing or polishing phases.

Toxicity has been demonstrated during these stages, even for towns located close to the production plants, which should be completely sealed. Why Do Houses Generally Have Cement Floors During the construction of a vertical shaft for the Tideway project in London, the cement factory was completely covered to prevent noise and the emission of elements such as cement dust. | M. Martínez Euklidiadas Wet concrete can cause burns and cement dust can irritate the skin or cause lung diseases such as silicosis.

However, it is safe to use as a finished product. The information on the toxicological effects of concrete tend to indicate problems when ingested, inhaled or in the event of direct contact with the eyes, nose, mouth, sensitive areas, etc. However, there is no evidence of impacts such as carcinogenicity, mutagenicity or toxicity.

It is safe. In fact, concrete has been shown to be a safer material than many others, and polished concrete surfaces have replaced others made from materials that cause diseases such as hookworm. This type of flooring often goes by the (not very scientific) name of “hypoallergenic flooring.”

Are cement floors toxic?

4. Reduce your exposure to toxic chemicals – Most people are aware of the health consequences of exposure to polluted outdoor air. But did you know that poor indoor air quality can pose similar health hazards? According to the Environmental Protection Agency, indoor air pollution is among the top five environmental dangers.

Research indicates that people spend approximately 90 percent of their time indoors. So for some of us, breathing the air inside our homes may be worse than spending time outdoors. What effect can flooring materials have on indoor air quality? Synthetic carpeting, for example, can emit volatile organic compounds, or VOCs, as can some of the products that accompany carpet installation, such as adhesives and padding.

Some of the adhesives used under vinyl sheet goods and linoleum can also emit VOCs. Polished concrete floors are a toxic-free flooring alternative because they aren’t treated with chemicals or sealers that can emit harmful VOCs. They also are easy to maintain and require only periodic sweeping or wet mopping with mild, nontoxic detergents.

Do concrete floors cause dust?

Concrete that wasn’t mixed properly is likely to suffer concrete dusting. This is often caused by too weak of a concrete mix. Not curing the concrete correctly will also cause dusting. A common practice for some is to spread dry cement over the surface of wet, setting cement.

Do concrete floors lose heat?

How to insulate your floor –

Wooden floor insulation: For wooden floors (also called suspended timber floors). This will consist of raising the flooring and placing special mineral wool or rigid foam insulation between joists. You can do this yourself or get a professional in. You can then also seal gaps in your floorboards using special flexible sealant between the boards. For concrete floors, If your home is newer then it’s is likely you have a ground floor made of concrete. Solid floors, should be less prone to heat loss than suspended floors. But you can still insulate them by laying a new layer of rigid foam insulation on top. This would usually be covered by chipboard plus your chosen floor covering. Do be aware though that by doing this you will raise the floor level. Top and tail: if your home has a loft it’s really worth insulating. Installing loft insulation is as simple as unrolling a rug. A mineral fibre material is laid between the joists and then over the joists in your loft or roof. This thick material captures heat normally lost through the roof and stops draughts getting in. Exclude draughts: check the usual suspects of doors, radiator pipes, floorboards and chimneys. All of these can be sealed up/ managed effectively with special sealant available at your DIY store. Add carpets. If you’ve got wooden floors you can keep heat in by laying down rugs and carpets and also sealing gaps between boards.

Do concrete floors crack?

What Causes Concrete to Crack? – Even if you hire the top concrete installer to pour your concrete floor, you may still end up with cracks down the line. Concrete is a fickle material that can crack at any point in its lifetime, from right after it’s poured to years later.

  1. As a result, it’s almost impossible to avoid cracking.
  2. Below are the common issues that can cause concrete floors to crack.
  3. Concrete floors are a mixture of cement, aggregate, and water.
  4. Before pouring a slab, the installation crew needs to perfect its concrete mix to prevent cracks.
  5. If your mixture is extra soupy, the concrete slab will shrink significantly as the excess water evaporates, and the force of the shrinkage can cause cracks as the slab dries.
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However, mixtures that are too dry will harden into weak, crumbly concrete.

How often should you mop concrete floors?

How Often to Clean Concrete Floors – Clean interior concrete floors (sealed, polished, stained, or painted) about once every two weeks, or as needed when dirt and grime start to build up. In the garage and on patios or walkways, plan for deep cleanings of unsealed concrete about once a year along with stain removal whenever necessary.

Why do concrete floors hurt my knees?

Can you hurt your knees by running on concrete? – Podiatry and Foot Pain Community Concrete is quite hard, so I am assuming that there must be some shock on your legs when you run. Can you hurt your knees like this? Jamie Wise Tuesday, November 02, 2021 Continuously hitting your feet on the ground can, hips, and lower back. Janik Sundstrom Monday, March 28, 2022 Yes, there certainly is increased shock placed through the feet and legs while running on hard surfaces. Doing so without footwear on will have the highest amounts of forces generated through the leg, as the feet and muscles of the lower leg absorb the impact with the ground.

Wearing shoes while doing so will reduce the impact through the feet and legs while impacting the ground. The soles of the shoes have materials in them that aid in shock absorption. It is not recommended for people with foot, ankle and pain in the legs not to run barefoot on hard surfaces as this may aggravate the symptoms.

Using orthotics inside your shoes will further decrease the shock placed through the leg when making impact with the ground due to its shock-absorbing materials. Increased shock absorption qualities in orthotics prove effective for many conditions of pain arising in the body.

Are concrete floors hard to clean?

Concrete is often considered an outdoor material, suitable for driveways or garage floors. However, it can be decorative and is a good, low maintenance alternative for indoor flooring. As long as it is properly sealed, concrete is non-porous, making it resistant to stains and exceptionally easy to clean and maintain.

  • Stained concrete floors should always be protected with a good floor sealer to help it resist water, dirt and stains.
  • This top layer of protection not only prolongs the life of your floor, it can also enhance the color and add sheen.
  • Water-based sealers are generally recommended for indoor use.
  • For further protection against stubborn stains and dirt, it is also recommended that you apply a mop down floor wax designed for sealed concrete floors.

This helps preserve the floors and makes it much easier to buff out minor scratches and wear patterns. Due to the densification and polishing process, polished concrete floors are extremely durable. These are excellent in high foot traffic environments because of their superior scratch resistance.

  1. They are also generally easier to maintain than other types of decorative concrete floors because they don’t require sealers or waxes.
  2. You should never attempt to clean your sealed or polished concrete floors with ammonia, bleach, citrus cleaners, pine based cleaners, vinegar or any highly acidic substance.

These are not pH neutral, and could break down or dull the sealant on your concrete flooring. Simple Green Multi-Surface Floor Care cleans all hard floor surfaces with a formula that won’t leave behind dulling residue. The pH neutral cleaner dries quickly, leaving behind a spot and streak-free finish that allows the natural beauty of the flooring to shine through.

Clear debris. Clean and clear the floor of all debris, dirt and dust using a vacuum, soft bristle broom or dry dust mop. Apply Simple Green Multi-Surface Floor Care, Spray the cleaning solution as a light mist across your floor section by section. Mop up in sections. Wet mop with clean water and wring well. Damp mop in sections. Dry. Allow the floor to air dry completely or wipe dry with a soft cloth before allowing foot traffic again.

Note: Although sponge mops can be used with this product, best results are achieved with a washable microfiber pad or disposable mopping pad. On highly reflective or glossy floors, damp mop with plain water as a final rinse to restore greatest shine. There are no polishes or waxes in this product. Why Do Houses Generally Have Cement Floors

Why is my concrete floor always wet?

Why Floors Sweat – For most floors, condensation is the main reason for the sweating, especially in warm weather. When warm humid air from outside comes into contact with the cold concrete the air rapidly cools and condenses on the surface causing the wetness.

If nothing is done about the condensation, the concrete slab becomes darker and results in efflorescence in the long run. This is a situation where the floor develops white patches caused when water that had previously been absorbed into the concrete floor slab comes to the surface and evaporates leaving behind mineral deposits carried from the concrete.

Other causes for sweating floors is lack of moisture barriers beneath the slab hence the movement of moisture from underneath to the surface. Do not be fooled by the density of concrete, within it are small capillaries that act as an absorbent hence dampening the affected rooms mostly in the basement.

Easy DIY Tests To Determine Cause Of Sweating Floor It is easy to determine whether a sweating floor is as a result of humid air from outside or absorption of moisture from underneath with this practical approach. All you need is a 16-inch piece of square shaped plastic and tape. Tape the plastic on the floor slab when dry ensuring the edges are completely sealed and wait until the floor shows signs of wetness.

Remove the taped plastic and assess the nature of wetness. If the concrete patch that was sealed is completely dry and the rest of the floor is wet, it is an indication of a sweating floor caused by humid air outside but if the patch is wet and the rest of the floor dry, it is an indication of a moisture problem.

Can moisture rise through a concrete floor?

Damp rising through concrete floor slabs is fairly common, causing damp issues on carpets and floor coverings, warping wooden floors and increasing the likelihood of low-level mould growth. The damp-proof membranes used during construction of concrete floors are often thin, and can easily become torn before they are laid, rendering them ineffective.

  1. In newbuild situations, it may be necessary to install a damp-proof membrane on top of a concrete slab to enable moisture sensitive floor finishes (e.g.
  2. Wooden floors) to be laid on top of the slab – enabling works to be completed more quickly than would otherwise be the case.
  3. Safeguard offer two options for the treatment of damp rising through existing concrete floors.

We also offer solutions for waterproofing slabs during construction,

Why is placing of concrete important?

The placement of concrete is a very important operation, which largely determines the success of a structure and its durability. Particular care is therefore necessary and all the technical and cllimatic parameters must be considered. The placement of concrete is a very important operation, which largely determines the success of a structure and its durability.

  1. Particular care is therefore necessary and all the technical and cllimatic parameters must be considered.
  2. There are a number of different phases between the time when concrete leaves the mixer and the finished structure: transport, pouring into formwork or a mould, vibration, maturing, form removal and curing.

These phases require techniques which must comply with what are known as the “rules of good engineering practice”. DELIVERY OF CONRETE The requirements here are to avoid shocks or sudden manoeuvres that could lead to segregation, ensure that transport times are compatible with the start of the setting process and protect the concrete from frost in cold weather.

CONCRETE PLACEMENT The formwork should be sufficiently rigid not to be deformed under the pressure of the fresh concrete and sufficiently watertight so laitance does not leak out. Before each time it is used it must be cleaned and treated with a suitable bond breaker. The reinforcement must be correctly positioned and held in place.

The height the concrete falls must be limited to avoid the danger of segregation and the rate of concreting must be as constant as possible. Concrete placement using a hopper (R.R.) THE VIBRATION OF CONCRETE This is indispensable to obtain concrete with good mechanical characteristics and high quality facings. CONCRETING IN HOT WEATHER (1) OR COLD WEATHER (2) The temperature of the fresh concrete must be kept down in hot weather to prevent it drying out.

  1. It must also be protected by adequate curing.Concrete with a low heat of hydration should be preferred.
  2. In cold weather, below 5°C, the setting process is almost halted and at 0°C the concrete is in danger of freezing.
  3. To avoid this i the mixing water, the aggregate or the concrete can be heated.
  4. Another possibility is to insulate the formwork.

Rapid hardening cement should be preferred.

How concrete floors are laid?

  1. 1 Prepare the area where the work will be done. Heavy equipment may be used to clear the footprint of the building, plants and unsuitable material should be removed, and the subgrade should be inspected to determine if it will give adequate support for the slab and the structure that will be built on it.
    • Have the site surveyed or layout the building lines yourself. Batterboards may be used, or corner stakes can be set to allow building lines to be pulled and grades to be established for clearing and grading.
    • Grub out trees, bushes, and other plants, including their roots so they will not leave voids in the subgrade when they decay.
    • Remove any mucky or otherwise unsuitable material from the subgrade.
    • Proof roll or use another method to compact the disturbed subgrade soil material.
  2. 2 Form and place any concrete foundations which will be below the slab. For monolithic slabs, there may simply be a turn down edge, but for many buildings, a spread footing is poured, then CMU (concrete masonry units, commonly called block ) are layed up to finished floor grade. Advertisement
  3. 3 Set the forms for your slab. Building lines which have been laid out on the outside building line and on grade (at the proper elevation), will allow you to form the edges of the slab straight and level.
  4. 4 Install any roughed in plumbing or electrical pipes, as well as sleeves for air conditioning piping and wiring. Bathtub drainpipes and commode flanges are often blocked out so the traps can be installed when the fixture is set into position later.
  5. 5 Fill the slab area with a suitable material to finished grade.
    • Capillary fill is used where moisture may create a problem.
    • Crushed limestone or other aggregate base materials can be used for slabs with heavy loads like warehouse floors and aircraft hangars.
    • Cohesive materials like clay are sometimes used where the subgrade cannot be sufficiently stabilized using conventional methods.
  6. 6 Compact and finish grade the fill material. For engineered buildings, testing the density of the fill may be required to meet the architect’s specifications. This is usually done by a geo-technical engineering laboratory.
  7. 7 Pretreat the fill and subgrade for insects using an approved and labeled termiticide. This is usually done by a bonded and licensed pest control company.
  8. 8 Install the required moisture barrier or waterproof membrane immediately after the termiticide is applied. This will help prevent the chemicals from evaporating, and will prevent the subgrade from drying out and becoming loose,
  9. 9 Install the reinforcing wire or rebars required by the architect/engineer or your local building codes. Make sure it is supported so that it will be positioned in the correct location after the concrete is placed and has set. Using concrete chairs is an effective method of doing this.
  10. 10 Plan the method you are going to use to screed the concrete. For wide spans, you will want to set grades or some type of screed guide to allow the screed operators to keep the concrete flat, or at the required slope. Pipe screeds are used in the placement shown in the photographs, but other techniques may be used, including grade stakes, or using a laser level and target to set wet screeds.
  11. 11 Determine the method you will use to place the concrete in your forms. This should be done early in the process so that concrete trucks and other required equipment will be able to get into the area they will need access to during the concrete placement.
    • Aerial pumps can place concrete to specific areas of the slab via an articulated boom and hose assembly up to 120 feet (36.6 m) from the concrete truck. They are often used for placing concrete on elevated decks or in inaccessible locations.
    • Line pumps also use pipes and hoses to move the concrete from the truck to the placement location, but require a lot of labor to move the hoses around while in use.
    • Concrete buckets can be used for placing the concrete in high locations or inaccessible areas using a crane or forklift.
    • Georgia buckets are self-propelled wagons that can maneuver in tight locations to place concrete.
    • Chuting or tailgating is discharging the concrete directly from the truck into the form.
  12. 12 Check forms for alignment and make sure all braces are tight and well anchored so the weight of the concrete does not cause them to bow or fail during the pour.
  13. 13 Calculate the quantity of concrete you will need to complete the slab. Measuring the length times the width, then multiplying it by the depth, in feet or a decimal fraction thereof will give you the total cubic feet of material required. To convert this number to cubic yards, divide it by 27. Allow enough extra concrete to fill any monolithic footings, depressed slabs, and low areas in the fill material.
  14. 14 Order the concrete from a ready mix concrete supplier, and schedule the delivery to coincide with the concrete placement schedule. This means both the date and time of the pour, and the interval of delivery for multiple trucks to arrive on the job site so the concrete crew has time to discharge and tend to each truckload, while not having to wait for the next truck to arrive.
  15. 15 Coordinate concrete testing with a qualified testing laboratory if the construction contract requires it. Testing labs often perform the following tests:
    • Slump. This test determines the plasticity of the concrete material. A vertical cone shaped mold is filled with concrete and the amount the concrete slumps is measured, to make sure it is not too wet to meet specification for the job.
    • Temperature. Concrete suffers detrimental effects when it becomes too hot, so the temperature of the product is monitored during placement.
    • Air entrainment. Chemicals are added to the concrete to ensure air is entrained in the mixture. These tiny voids will allow the concrete to expand and contract more before cracking when concrete is expected to be subjected to large temperature variations over time. A typical air entrainment requirement is 3-5%.
    • Compressive strength. Concrete strength is measured in PSI (pounds per square inch), and special plastic molds are used to collect samples of the material which are later used in the testing lab’s laboratory to determine the concrete’s strength.
  16. 16 Plan on beginning large slab placements as early as possible to allow time to complete the project successfully. Things to consider are these:
    • Make sure you have sufficient manpower to perform the job.
    • Check the weather conditions. These factors can contribute to concrete setting times:
      • Temperature. The higher the temperature, the faster the concrete will set, and very hot conditions will affect the ability of the workers to perform.
      • Humidity. Very low humidity will allow for the water in the concrete to evaporate more quickly.
      • Wind. Wind can increase the speed the surface of the concrete will dry.
      • Cold weather can greatly increase the setting time for concrete. Placing concrete at near freezing temperatures or when freezing conditions are expected during the next 48 hours is not recommended.
      • Sunshine. Concrete will set more quickly in bright sunny conditions than it will in cloudy conditions.
  17. 17 Set up all equipment used in the concrete placement on the day of the pour.
    • If a concrete pump truck is to be used, have it arrive an hour or so early to allow it to be set up and in position, and to let the pump operator get an idea of the placement plan.
    • Service troweling machines, including checking the controls, the blades, and making sure they are full of engine oil and gasoline.
    • Check straight edges, screed boards, power screeds, and bull floats to make sure they are in good condition.
    • Make sure concrete vibrators are in good condition if the slab requires their use.
    • Check personal safety equipment, such as gloves, rubber boots, and eye protection.
    • Clean and check all hand tools so they are in good working condition.
  18. 18 Begin the concrete placement at a corner and continuing placing the concrete along the grade or screed lines as you have established. Concrete can be placed in parallel sections as long as each subsequent section is placed before the prior section has begun to set up, or there will be cold joints between the two.
  19. 19 Make sure the reinforcing wire mat or rebars are not forced to the bottom of the concrete while placing. If needed, have a worker or two walk with the persons placing the concrete and use hooks to pull the wire up. Keeping the reinforcing in the proper position is critical to the strength of the slab.
  20. 20 Keep placing the concrete and pulling it roughly level with Come Alongs and screeding it off with a straightedge or power screed. Have finishers work around electrical conduits and plumbing pipes with hand tools to keep the surface level.
  21. 21 Have one or two finishers, as the job requires, to bull float the concrete after it has been screeded. The person who bull floats the concrete may need a laborer to add concrete to any low areas he notices while performing this task.
  22. 22 Give men the job of using hand floats the job of working the edges of the slab. This is the process of moving around the edge making sure the perimeter of the slab along the forms is flat and smooth. This is especially important if braces are anchored on top of the form, or if the forms are not flush and level.
  23. 23 Remove pipe screeds or grade stakes as each area is placed and screeded off. If there is a hole left in the concrete when the screed or stake is removed, shovel additional concrete into it to flush it with the surface of the screeded concrete.
  24. 24 Continue pouring the concrete until the forms are filled to the finished grade of the slab. Once the concrete has been completely screeded, give someone the task of cleaning the tools used for placing the concrete, including the pipe screeds, bull floats, comealongs, and shovels.
  25. 25 Allow the concrete to set. If the edges have been properly floated, and the bull floaters have done a good job with the main areas, you will want to have the crew wait until the concrete gets hard enough to support workers on knee boards before continuing the finishing process. Check the concrete by pushing it with your gloved finger until it is unyielding.
  26. 26 Have concrete finishers get on knee boards to work areas where a power trowel (troweling machine) cannot be operated. Working around blocked out areas, pipe stub ups, rebar dowels, and other obstacles will often require considerable effort.
  27. 27 Set your troweling machine on the slab when the concrete is hard enough to support the workman without leaving deep footprints in its surface. Waiting too long will mean to concrete is too hard to achieve a very good finish, but starting too early will mean the blades of the machine may dig into the concrete causing rutting, humps, and other problems.
  28. 28 Trowel the concrete with the blades at their flattest setting. This gives them more surface area, so they will not tend to sink in as they spin across the surface. Using a combination type blade, rather than a finishing blade is better for this step.
  29. 29 Sprinkle a light mist of water on areas that do not respond to the troweling machine, particularly to help pull grout up to fill voids and cover any aggregate left exposed during bull floating.
  30. 30 Let the concrete continue to set after it has been troweled the first time. If the surface is flat and free of defects, you can allow the concrete to harden until it is ready for the finish troweling. Because the concrete is placed in a continuous operation, the first area that is poured will normally set up first, but be aware that areas exposed to hot sun or wind may get hard earlier than areas that were placed in a shaded, protected location.
  31. 31 Run the troweling machines over the concrete until the level of finish you desire is achieved. For a hard troweled finish, you will raise the blades up on the machine as the concrete gets progressively harder, which in turn puts more pressure on a smaller area of the blade.
  32. 32 Apply a curing compound or use a curing technique to keep the concrete from drying too quickly, especially in extreme weather conditions resulting in rapid evaporation.
  33. 33 Saw any joints required by the construction plans.
  34. 34 Remove the forms and clean them for reuse on the next project. Make sure to remove any nails or screws that may present a hazard to workers handling these materials.
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Why is cemented floor not laid in one block?

Q22 Why is a cement floor laid in small pieces with a gap in between, Question 21 Short/Long Answer Questions Answer: Solution: The floor is laid in small pieces with gaps in between to allow for the expansion during summer. Video transcript “Come to it.

  1. Hello, welcome to Lido home that trailer going to see why is a cement floor laid in small pieces with a gap in between.
  2. So the cement floor is laid in small pieces a gap in between to allow the expansion during summer.
  3. So the main reason of policy since although the expansion due to them during the summer.

Okay, allow the expansion during the summer but in the recent year due to although the expansion. In the summer due to heat what happens is going to find someone. Okay, so I have you understood this video subscribe to this channel regular updates, and thanks for watching this video.” Was This helpful? : Q22 Why is a cement floor laid in small pieces with a gap in between,