Significance:- – When water is mixed with cement, it starts hydration. Excessive addition of water in cement results in an increase in Water cement ratio & ultimately cement loses its strength when it hardens. If Less water is added than required, Cement isn’t properly hydrated and results in loss of strength.

The Standard or Normal consistency for Ordinary Portland cement varies between 25-35%. To prepare a mix of cement paste of Standard consistency 25-35% of water is added to cement. To explain in detail Let us assume a standard consistency is 30%. Take 400g of Cement for this quantity, Add 30% of Water.i.e., 120g of water content is added in cement to attain standard consistency.

Also Read:- Initial and final setting time of cement

Contents

## What is the standard and normal consistency of cement test?

Why we calculate Standard or Normal Consistency of Cement? – The standard and normal consistency of the cement test is used to find out the amount of water required to make a cement paste of standard consistency. It is necessary to determine the standard amount of water needed for each case, like initial setting time of cement, final setting time of cement, soundness of cement, and Compressive strength of cement,

Name of Test | Amount of Water Required |

Soundness of cement (Le-Chatelier method) | 0.78 P |

Setting time of cement | 0.85 P |

Compressive strength of cement | (P/4 + 3)% of combined mass of cement and sand. |

Table showing standard amounts of water

#### How to prepare a mix of cement paste of standard consistency?

Significance:- – When water is mixed with cement, it starts hydration. Excessive addition of water in cement results in an increase in Water cement ratio & ultimately cement loses its strength when it hardens. If Less water is added than required, Cement isn’t properly hydrated and results in loss of strength.

- The Standard or Normal consistency for Ordinary Portland cement varies between 25-35%.
- To prepare a mix of cement paste of Standard consistency 25-35% of water is added to cement.
- To explain in detail Let us assume a standard consistency is 30%.
- Take 400g of Cement for this quantity, Add 30% of Water.i.e., 120g of water content is added in cement to attain standard consistency.

Also Read:- Initial and final setting time of cement

## What is water content in cement?

Definition – It is the amount of water content required for cement to attain the standard consistency or normal consistency of cement. Or The standard consistency of cement is that the amount of water required for the cement paste to permit the Vicat plunger to penetrate to a point 5-7mm from the bottom is known as standard or normal consistency of cement.

## What are the factors that affect the consistency of cement?

What is The Normal Consistency or Standard Consistency of Cement Paste? – The normal consistency or standard consistency of a cement is defined as that consistency which will permit the Vicat plunger of 10 mm diameter to penetrate to a point 5 mm to 7 mm from the bottom of the Vicat mould when the cement paste is tested as described in procedure.

Name of Test | Amount of Water Required |

Soundness of cement (Le-Chatelier method) | 0.78 P |

Setting time of cement | 0.85 P |

Compressive strength of cement | (P/4 + 3)% of combined mass of cement and sand. |

P=Consistency of standard cement paste Factors That Affect the Standard Consistency of Cement Paste:- The Normal consistency of cement paste depends upon the factors such as temperature and fineness of cement. Higher the temperature and higher the fineness of cement results higher the normal consistency of cement and vice versa.

Vicat Apparatus |

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Vicat-Apparatus-DiagramHi friends, you are welcomed in the world of Civil Allied Gyan, Here I have explained about determination of normal consistency or standard consistency of cement. Read definition, apparatus, IS code, test procedure, formula, result, lab report about normal or standard consistency of cement by Vicat apparatus, IS Code For Normal Consistency or Standard Consistency Test of Cement:-

- IS: 4031 (Part 4)-1988, Methods of physical test for hydraulic cement.
- IS: 5513-1996, For specification for Vicat’s apparatus.

Apparatus Required For Normal Consistency or Standard Consistency Test of Cement:-

- Vicat’s apparatus conforming to IS: 5513-1976
- Weighing Balance of capacity 1000g and sensitivity to 1g.
- Gauging trowel conforming to IS: 10086-1982.
- Stop Watch
- Dial Gauge

What is Vicat’s Apparatus? Vicat apparatus is a penetration device used in testing of hydraulic cements and similar materials to determine their normal or standard consistency, It is also used to determine the initial setting time and final setting time of hydraulic cements and similar materials.

#### What is consistency of cement?

What is The Normal Consistency or Standard Consistency of Cement Paste? – The normal consistency or standard consistency of a cement is defined as that consistency which will permit the Vicat plunger of 10 mm diameter to penetrate to a point 5 mm to 7 mm from the bottom of the Vicat mould when the cement paste is tested as described in procedure.

Name of Test | Amount of Water Required |

Soundness of cement (Le-Chatelier method) | 0.78 P |

Setting time of cement | 0.85 P |

Compressive strength of cement | (P/4 + 3)% of combined mass of cement and sand. |

P=Consistency of standard cement paste Factors That Affect the Standard Consistency of Cement Paste:- The Normal consistency of cement paste depends upon the factors such as temperature and fineness of cement. Higher the temperature and higher the fineness of cement results higher the normal consistency of cement and vice versa.

Vicat Apparatus |

table>

Vicat-Apparatus-DiagramHi friends, you are welcomed in the world of Civil Allied Gyan, Here I have explained about determination of normal consistency or standard consistency of cement. Read definition, apparatus, IS code, test procedure, formula, result, lab report about normal or standard consistency of cement by Vicat apparatus, IS Code For Normal Consistency or Standard Consistency Test of Cement:-

- IS: 4031 (Part 4)-1988, Methods of physical test for hydraulic cement.
- IS: 5513-1996, For specification for Vicat’s apparatus.

Apparatus Required For Normal Consistency or Standard Consistency Test of Cement:-

- Vicat’s apparatus conforming to IS: 5513-1976
- Weighing Balance of capacity 1000g and sensitivity to 1g.
- Gauging trowel conforming to IS: 10086-1982.
- Stop Watch
- Dial Gauge

What is Vicat’s Apparatus? Vicat apparatus is a penetration device used in testing of hydraulic cements and similar materials to determine their normal or standard consistency, It is also used to determine the initial setting time and final setting time of hydraulic cements and similar materials.

### What is the standard consistency of ordinary portland cement?

Significance – When we add water to the cement, it starts hydration. In this hydration process the cement and water mixed together and forms a strong bond but if we add more and more amount of water, it results in Increase of water cement ratio and ultimately cement loses its plasticity and also strength.

Also let us assume if we add less amount of water to the cement then it may result in less water cement ratio thus results in no gain of strength. So, from this study it is clear that standard amount of water is required to attain proper strength of cement. For example; The standard consistency or normal consistency of ordinary Portland cement varies between 25-35%.

To prepare a cement paste of standard consistency 25-30%, then the same percentage equivalent amount of water of weight of cement is added.i.e. if we assume the standard consistency of cement is 30% so for 400 g of cement, we add 30% of water i.e.120g of water content is added to the cement.

#### What is the normal consistency of cement paste?

The normal consistency of cement paste generally varies from 25% to 35%. There is no trial and error method by using the Vicat apparatus to find out the correct consistency of cement. The standard consistency of cement varies between 25-and 35%.

#### How much water is required to attain proper strength of cement?

Significance – When we add water to the cement, it starts hydration. In this hydration process the cement and water mixed together and forms a strong bond but if we add more and more amount of water, it results in Increase of water cement ratio and ultimately cement loses its plasticity and also strength.

Also let us assume if we add less amount of water to the cement then it may result in less water cement ratio thus results in no gain of strength. So, from this study it is clear that standard amount of water is required to attain proper strength of cement. For example; The standard consistency or normal consistency of ordinary Portland cement varies between 25-35%.

To prepare a cement paste of standard consistency 25-30%, then the same percentage equivalent amount of water of weight of cement is added.i.e. if we assume the standard consistency of cement is 30% so for 400 g of cement, we add 30% of water i.e.120g of water content is added to the cement.