Which symbol is used to represent concrete’s compressive strength?

The specified compressive strength, fc’, is _______ the average strength?

High strength concrete usually has a higher paste content.

A concrete cube is subjected to biaxial loading. Estimate the compressive strength σ2 if σ1 = 0.5 times the tensile strength, in tension.

Prolonged moist curing leads to the highest concrete strength.

Autogenous shrinkage occurs without the loss of moisture due to hydration reactions inside the cement matrix.

Shrinkage is the decrease in the volume of concrete during hardening and drying under constant temperature.

Autogenous shrinkage occurs when moisture diffuses out of the concrete and the exterior shrinks more rapidly than the interior.

Concrete is primarily made of two components. What are they?

Damage or collapse in extreme earthquakes is an example of a serviceability limit state.