For the following questions answer them individually
High percentage of C3S and low percentage of C2S in a cement will result in
(i) rapid hardening
(ii) high early strength with high heat generation
(iii)more resistance to chemical attact
The correct answer is
As per IS 456, splitting tensile-strength $$(f_{cr})$$ of concrete may be estimated from compressive stength as
If the modular ratio is ‘m’, stress ratio in steel and concrete is ‘r’, then the critical neutral axis constant ‘k’ is given by
For two way action, i.e. punching shear, the calculated shear stress, $$\tau_{y}$$ , should satisfy the following relation $$\tau_{y} \leq K_{s}\tau_{c} $$
where $$\tau_{c}$$ according to working stress method is expressed as
