Engineering :: Building Materials

@ : Home > Civil Engineering > Building Materials

111.

The ultimate strength of cement is provided by

A.	silica	B.	di-calcium silicate
C.	tri-calcium silicate	D.	tri-calcium aluminate

112.

A good quality cement should have higher percentage of

A.	silica	B.	free lime
C.	di-calcium silicate	D.	tri-calcium silicate

113.

The strength of white cement is

A.	equal to	B.	less than
C.	greater than

114.

The percentage of the slag component of Portland-slag cement varies from

A.	10 to 40%	B.	40 to 70%
C.	70 to 80%	D.	80 to 90%

115.

The rapid hardening Portland cement has a

A.	lower heat of hydration	B.	higher heat of hydration
C.	lower shrinkage coefficient

116.

The initial setting of cement is caused due to

A.	di-calcium silicate	B.	tri-calcium silicate
C.	tri-calcium aluminate	D.	tri-calcium alumino ferrite

117.

The hapd hardening Portland cement is obtained by

A.	grinding the clinker to a high degree of fineness	B.	adding calcium sulphate to the mixture
C.	adding gypsum after grinding	D.	burning the mixture at a lower temperature

118.

The fineness of cement is tested by

A.	air-permeability method	B.	Le-chatelier method
C.	Vicat's apparatus	D.	all of these

119.

The soundness of cement is tested by

A.	air permeability method	B.	Le-chatelier method
C.	Vicat's apparatus	D.	all of these

120.

Vicat's apparatus is used to determine the

A.	initial setting time of cement	B.	final setting time of cement
C.	normal consistency of cement	D.	all of these