Cement

Concrete Shrinkage – Shrinkage of Concrete

Concrete Shrinkage – Shrinkage of Concrete Concrete shrinks during setting and drying due to hydration of cement and produces shrinkage cracks. The drying shrinkage increases with an increase in cement content or an increase in water content. Shrinkage is greater with riche...

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Slump Cone Test and its Advantages – Limitations

Slump Cone Test and its Advantages – Limitations Although, the slump cone test is not entirely satisfactory since it gives widely varying results and also does not give a true measure of workability but it is of value in the field as a control test and is useful in comparin...

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Storage of Cement

Storage of Cement Cement can be safely stored in sacks for a few months if kept in dry and air-right room. If prolonged storage of cement is unvoidable, it is better to empty the bags and stock the cement in as deep a heap as possible in a damp-proof enclosed space. Paper sacks a...

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Test for Freshness of Cement

Test for Freshness of Cement Indications of a damaged cement are given by the presence of large lumps of set cement, and when this happens the lumps should be screened out unless they are soft enough to be powdered when pressed in the fingers. It needs to be considered if this ce...

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Hydration of Cement & Evolution of Heat

Hydration of Cement & Evolution of Heat When water is added to cement, the cement hydrates and during the chemical reactions which take place while the cement is setting an increase in temperature occurs and a considerable quantity of heat is generated. Hydration of cement is...

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IRS-T 40 Special Grade Cement

IRS-T 40 Special Grade Cement The IRS-T 40 Cement is a special type of cement which is mainly used in railway works only. This special cement is manufactured under the specifications that are approved by the ministry of Indian Railways. This cement contains high volume of C3S con...

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Initial & Final Setting Time of Cement Test

Initial & Final Setting Time of Cement Initial & Final Setting Time of Cement test is used to detect the deterioration of cement due to storage.This is a conventional type of cement test and it has no relation with that of hardening of concrete. Initial Setting Time of C...

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Consistency Test of Cement

Consistency Test of Cement Consistency Test of Cement is carried out inorder to find the determine the percentage of water required for preparing cement pastes for other tests. Test Procedure to Find the Consistency of Cement: 1. Take an empty enameled pan free from dirt and othe...

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Tensile Strength of Cement

Tensile Strength of Cement Tensile Strength of Cement test was formerly used to have an indirect indication of compressive strength of cement. It is at present generally used for the rapid hardening cement. Tensile Strength of Cement Test Procedure: (i) The mortar of cement and ...

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Compressive Strength of Cement

Compressive Strength of Cement This test is carried out to determine the compressive strength of cement. Test Procedure for compressive strength of cement: (i) The mortar of cement and sand is prepared. The proportion is 1:3 which means that (X) gm of cement is mixed with 3(X) gm...

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