500 Best Concrete Technology- MCQ
Q41). The cement, widely used in retaining walls is
a).rapid hardening cement
b).low heat cement
c).sulphate resisting cement
d).ordinary Portland cement
Correct Answer:
low heat cement
Explanation:
Q42). Blast furnace slag cement is used for
a).dams
b).bridge abutments
c).retaining walls
d).all of these
Correct Answer:
all of these
Explanation:
Q43). Blast furnace slag cement
a).develops low heat of hydration
b).has less early strength
c).develops high heat of hydration
d).Has high early strength
Correct Answer:
has less early strength
Explanation:
Q44). Which of the following cements is expected to have the highest compressive strength after 3 days?
a).ordinary portland cement
b).rapid hardening cement
c).high alumina cement
d).sulphate resisting cement
Correct Answer:
high alumina cement
Explanation:
Q45). For a structure subjected to the action of seawater, the cement used is
a).rapid hardening cement
b).low heat cement
c).high alumina cement
d).sulphate resisting cement
Correct Answer:
high alumina cement
Explanation:
Q46). The strength of concrete using air entraining cement gets reduced by
a).5 to 10 %
b).10 to 15 %
c).15 to 20 %
d).20 to 25 %
Correct Answer:
10 to 15 %
Explanation:
Q47). Colocrete is a commercial term for
a).high alumina cement
b).coloured cement
c).low heat cement
d).rapid hardening cement
Correct Answer:
coloured cement
Explanation:
Q48). Pozzolana is essentially a siliceous material containing clay upto
a).0.2
b).0.4
c).0.6
d).0.8
Correct Answer:
0.8
Explanation: