Top 250+ Solved Concrete Technology MCQ Questions Answer
Q. Gel/Space ratio = x = Volume of gel / Space available = 0.657 C / 0.319 C+ Wo. Here Wo stands for?
a. Weight of cement in kg
b. Weight of cement in g
c. Volume of gel
d. Volume of mixing water in ml
Q. This strain increases over time due to _________
a. Creep
b. Elastic modulus
c. Short term modulus of elasticity
d. Long term modulus of elasticity
Q. If the stress is removed, the specimen shows an instantaneous recovery strain ___ the elastic strain on loading.
a. Higher than
b. Lower than
c. Equal to
d. Much greater than
Q. Creep ___ as the age of application of load _____
a. Increase, increase
b. Increase, decrease
c. Decrease, decrease
d. Decrease, increase
Q. Shrinkage is the reduction in the volume of a fresh hardened concrete exposed to ambient tempand humidity.
a. True
b. False
c. none
d. all
Q. Durability of concrete is proportional to _________
a. Sand content
b. Water cement ratio
c. Aggregate ratio
d. Cement aggregate ratio
Q. The quality of concrete, specifically a ____________ w/c ratio, is the best protection against sulphate attack.
a. High
b. Medium
c. Low
d. Very low
Q. The continuous strain, which the concrete undergoes due to application of external loads, is called __________
a. Workability
b. Segregation
c. Bleeding
d. Creep
Q. Harshness in concrete is due to the excess of _____________
a. Water
b. Finer particles
c. Middle sized particle
d. Coarser particle
Q. __________ has designated the concrete mixes into a number of grades as M10, M15.
a. IS 456-2000
b. IS 456-2010
c. IS 513-1999
d. IS 465-2000
Q. Quality control helps to ___________ the risks of overdesign that ___________ the overall cost.
a. Maximize, Increase
b. Minimize, Increase
c. Maximize, Decrease
d. Minimize, Decrease
Q. The cement concrete, from which entrained air and excess water are removed after placing it in position, is called ________
a. Vacuum concrete
b. LWC
c. Prestressed concrete
d. Sawdust concrete
Q. The light-weight concrete is prepared by ____________
a. Mixing Portland cement with sawdust in specified proportion in the concrete
b. Using coke-breeze, slag as aggregate in the concrete
c. Mixing Al in the concrete
d. Mixing Fe in the concrete