500 Best Concrete Technology- MCQ
Q105). Excess quantity of water
a).makes the concrete mix harsh
b).makes the concrete mix unworkable
c).causes segregation in concrete
d).both C and D
Correct Answer:
both C and D
Explanation:
Q106). Water cement ratio may be defined as the ratio of
a).volume of water to that of cement in a concrete mix
b).weight of water to that of Cement in a concrete mix
c).volume of water to that of concrete in a concrete mix
d).both A and B
Correct Answer:
both A and B
Explanation:
Q107). The rule of water cement ratio was established by
a).Duff Abram
b).Plowman
c).W. Simms
d).Dr. Karl Terzaghi
Correct Answer:
Duff Abram
Explanation:
Q108). According to the rule of water cement ratio, the strength of concrete wholly depends upon
a).the quality of cement
b).the quality of cement mixed with aggregate
c).the amount of Water used in preparation of concrete mix
d).all of the above
Correct Answer:
the amount of Water used in preparation of concrete mix
Explanation:
Q109). Hydration of cement is due to the chemical action of water with
a).dicalcium silicate
b).tricalcium silicate
c).tricalcium aluminate
d).all of these
Correct Answer:
all of these
Explanation:
Q110). The development of first 28 days strength is on account of the hydration of
a).dicalcium silicate
b).tricalcium silicate
c).tricalcium aluminate
d).tetra calcium alumino ferrite
Correct Answer:
tricalcium silicate
Explanation:
Q111). If the water cement ratio is more, then the
a).strength of concrete will be less
b).durability of concrete will be less
c).capillary voids will be more in the physical structure of hydrated cement
d).all of the above
Correct Answer:
all of the above
Explanation:
Q112). Water cement ratio is, usually, expressed in
a).litres of water required per bag of cement
b).litres of water required per kg of cement
c).both A and B
d).none of these
Correct Answer:
litres of water required per bag of cement
Explanation: