CONCRETE TECHNOLOGY AND DESIGN OF CONCRETE STRUCTURES QUIZ

forces of tension and compressions remain unchanged but lever arm changes with the moment

both forces of tension and compres-sion as well as lever arm change

forces of tension and compression change but lever arm remains unchanged

both forces of tension and compres-sion as well as lever arm remain unchanged

compressive strength

direct tensile strength

flexural tensile strength

split tensile strength

increases bleeding

reduces workability

increases shrinkage

increases strength

four cantilevers

one cantilever

three cantilevers

two cantilevers

dependent on grade of concrete also

0.40 d

0.45 d

0.35 d

(ii) and (iv)

(ii) and (iii)

(i) and (iv)

(i) and (iii)

None of these

equal

more

less

None of these

Bleeding can be minimized by adding pozzuolana finer aggregate.

Lean mixes bleed more as compared to rich ones.

Bleeding can be increased by addition of calcium chloride.

20 to 25% more

25 to 50% more

15 to 20% more

10 to 15% more

steel is lower than that for concrete

None of these

steel is higher than that for concrete

steel and concrete are same