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Building Materials

Q1:

Soundness test of cement determines

A quality of free lime

B ultimate strength

C durability

D initial setting

E all the above.

ANS:A - quality of free lime

Soundness test is performed to determine a durability of cement.

There are two type of soundness test:-.

1. Le Charlier test- to measure the unsoundness due to lime and magnesia (both).
2. Autoclave test - to measure the unsoundness due to magnesia only.

Note:- there is no test to measure unsoundness due to lime only.



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