STUDY LESSON:-26 [CIVIL ENGINEERING]
For Competitive exams/Railway jobs/Semester exam/Self Study Purpose
1. The cohesion break up in a mass of concrete is also known as ____________
2. The type of lime mostly used in lime concrete is _____________
3. In a cement concrete construction where a high compressive stresses are artificially induced by eccentricity is called ____________
4. The removal of excess air after placing concrete helps increasing its strength by ___________
5. In the purpose of impulsing sound and heat in a concrete we mostly use ____________
6. A suitable admixture in concrete does improves ______________ qualities in concrete.
7. Which chemical ingredients provide quick setting time in cement?
8. The main purpose of aggregate in a concrete is as a __________
9. What are the function of tri-calcium aluminate in cement?
10. The degree of grinding of cement is known as _________
Answers:-
1. Bleeding
2. Hydraulic Lime
3. Prestressed cement concrete
4. 15% to 20%
5. air entrained concrete , aerated or cellular concrete
6. water proof, acid proof
7. alumina
8. filler
9. induced heat of hydration, causes initial setting time of cement etc.
10. fineness
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