CONCRETE TECHNOLOGY AND DESIGN OF CONCRETE STRUCTURES QUIZ

increase in tensile strength but decrease in ductility

decrease in tensile strength but increase in ductility

increase in both tensile strength and ductility

decrease in both tensile strength and ductility

(ii) and (iii)

(i) and (iv)

(i) and (iii)

(ii) and (iv)

Grading of the aggregate

All of above

Aggregate cement ratio

Time of transit

10%

15%

20%

5%

5%

7%

6%

4%

All of these

To impart initial compressive stress in concrete

To resist tensile stresses

To provide adequate bond stress

Tv + Tc

xc

xv

both top and bottom faces perpendicular to wall

None of these

bottom face perpendicular to wall

top face perpendicular to wall

using thinner bars but more in number

providing vertical stirrups

increasing the depth of beam

using thicker bars but less in number

affects only the early development of strength

both (a) and (b)

affects only the ultimate strength

does not affect the strength