A concrete in which dry coarse aggregate are first packed to have the – McqOptions

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1.	A concrete in which dry coarse aggregate are first packed to have the least voids and then the cement sand mortar is injected under pressure to fill all the voids, resulting in a very dense concrete, is known as ______.
A.	Pre-packed concrete
B.	Vacuum concrete
C.	No fines concrete
D.	Aerate concrete
Answer» B. Vacuum concrete

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