Which of the following four Bogue's Compounds has the maximum percentage by volume in the hydration of cement?
Alite C3S
This refers to the total volume of hydration products generated relative to the volume of the unhydrated compound. Therefore, Alite (C_3S) is the Bogue's compound that has the maximum percentage by volume in the hydration of cement due to its high proportion in cement and the volume expansion during its hydration. Therefore, the correct answer is Alite C 3 S.
Refractory cement is rich in
The ______ in excess makes the cement unsound and causes the cement to expand and disintegrate
Match the apparatus for conduct of test in List 1 with the property of cement in List 2.
List 1 | List 2 |
A. Vicat’s apparatus test | 1. Soundness test |
B. Le-Chatelier’s apparatus | 2. Fineness |
C. Briquette test method | 3. Setting time |
D. Air permeability method | 4. Tensile strength |
The cement becomes useless if its absorbed moisture content exceeds
In ordinary cement, about 99% of its final strength is achieved in _____.