Q. The slurry, in its movement down the kiln, encounters a progressively higher temperature. At first, the water is driven off and __________ is liberated.

View solution

Q. For complete hydration of cement the w/c ratio needed is ________

View solution

Q. The minimum water to cement ratio for cement concrete to hydrate is _______

View solution

Q. Approximate percentage range of A₂O₃ in OPC is _______

View solution

Q. What is the percentage of iron oxide in white cement?

View solution

Q. What is the percentage of air by volume in Air Entraining Cement?

View solution

Q. What is curing?

View solution

Q. In a dry environment, concrete strength will be loosed as much as _________ % in the moist environment.

View solution

Q. Concrete placed in cold weather will take __________ time to gain strength.

View solution

Q. After finishing concrete surface must be kept _________

View solution

Q. Dry intervals in surface wetting leads to __________

View solution

Q. Contractors place blankets over the concrete to ____________

View solution

Q. Well cured concrete _________ thermal, plastic and drying shrinkage cracks.

View solution

Q. Which method is the most common and cheaper for water curing?

View solution

Q. The hydration that provides the initial mix and chemical bond of the concrete’s ingredients is the _________

View solution

Q. What is the full form of rH?

View solution

Q. This image has _________

View solution

Q. Which has Low porosity?

View solution