Register Now

Login


Lost Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

Add question

Register Now

COMPOUNDS FORMED DURING HYDRATION OF CEMENT

Following are the compounds formed during the setting action of cement: Tricalcium silicate (C3S) – 3CaO.SiO2 Dicalcium silicate (C2S) – 2CaO.SiO2 Tricalcium aluminate (C3A) – 3CaO.Al2O3 Tetracalcium alumino ferrite (C4AF) – 4CaO.Al2O3Fe2O3  

Continue reading

SPECIFIC GRAVITY OF CEMENT

AIM To determine the specific gravity is normally defined as the ratio between the weight of a given volume of material and weight of an equal volume of water.To determine the specific gravity of cement, kerosene which doe snot recent with ...

Continue reading

Compressive Strength of Mortar -Mix Ratio and Cube Test

Compressive strength of mortar is determined by using 2 inch or 50mm cubes as per ASTM C109 / C109M – Standard Test Method for Compressive Strength of Hydraulic Cement Mortars. Mortar is a combination of cement, sand mixed with water. It ...

Continue reading

FINAL SETTING TIME OF CEMENT

To determine the final setting time of cement. This test is required to understand the rate of gain of strength of cement w.r.t. to time. APPARATUS Vicat apparatus, needle for initial setting time, stop watch. PROCEDURE Take 400 gm of cement in a pan. ...

Continue reading

INITIAL SETTING TIME OF CEMENT (IS 4031, IS 269)

To determine the initial setting time of cement. This test is required to understand the time cement takes for initial setting between mixing and transporting and placing of concrete. APPARATUS Vicat apparatus, needle for initial setting time, stop watch. PROCEDURE Take 400 gm of cement in ...

Continue reading

STANDARD CONSISTENCY OF CEMENT

To determine the quantity of water required to produce a cement paste of standard consistency. The standard consistency is that consistency, which will permit the vicat plunger to penetrate to a point 5 to 7mm from the bottom of the vicat ...

Continue reading