Top 150+ Solved Maintenance and Rehabilitation of Structures MCQ Questions Answer
Q. What is specific heat (in J/Kg C) of the concrete?
a. 840 – 1170
b. 850 – 1170
c. 840 – 1120
d. 840 – 1270
Q. Thermal expansion in concrete means____
a. change in area with change in temperature
b. change in temperature with change in density
c. change in humidity with change in density
d. none of the above
Q. What is thermal expansion (in area per temp.) of the concrete?
a. 0.002 to 0.008
b. 0.002 to 0.010
c. 0.002 to 0.006
d. 0.004 to 0.006
Q. What is main reason for thermal movement in concrete?
a. heat of hydration
b. temperature
c. fire outside a concrete
d. all of the above
Q. Which chemical reaction responsible for the corrosion in RCC?
a. oxidization
b. reduction
c. radiation
d. carbonization
Q. What is main reason for crack generation in concrete?
a. movement of humidity
b. sleep
c. difference in temperature
d. all of the above
Q. Epoxy resins have_________.
a. poor mechanical strength
b. poor thermal strength
c. low tensile strength
d. none of the above
Q. Who is responsible for the combination of the polymer particles?
a. monomer
b. nanomer
c. tetramer
d. crystal
Q. In cathode protection method, by____________ we can reduce the corrosion in steel.
a. increasing a electrical potential
b. decreasing a electrical potential
c. zeroing a electrical potential
d. neutralizing a electrical potential
Q. Which metal is used for making a foamed concrete?
a. aluminium
b. zinc
c. a & b both
d. none of the above
Q. Vacuum concrete is used for_____
a. making thin section
b. more removing a extra water from the concrete
c. when water cement ration is in between 0.5 to 0.65
d. all of the above
Q. Which equipment is used for the grouting?
a. heater
b. compressor
c. grout pump
d. all of the above
Q. Which method is not use for the underpinning?
a. heating method
b. frizzing method
c. pit method
d. all of the above