1.

The cement concrete, from which entrained air and excess water are removed after placing it in position, is called _________(a) Vacuum concrete(b) LWC(c) Prestressed concrete(d) Sawdust concreteI got this question in an international level competition.I need to ask this question from Light Weight Concrete in portion Special Concrete and Concreting Methods of Concrete Technology

Answer»

The correct choice is (a) VACUUM CONCRETE

Explanation: Vacuum concrete is the TYPE of concrete in which the excess water is removed for improving concrete strength. The water is removed by use of vacuum mats connected to a vacuum PUMP.



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