Target GATE & ESE 2022 ( Building Material)

 Do You Know?

👉Tensile strength of concrete is 10% of its compressive strength.

👉Cube compressive strength of concrete obtained from 15 cm cube is higher than 15 x 30 cm cylinder compressive strength. 

👉The specific surface (in cm^2/gm) of aggregate is inversely proportional to the particle size.

👉Air entrainment increases workability of fresh concrete.

👉Cube Strength > Cylinder strength > Modulus of rupture > Split tensile strength

👉Curing of concrete shall be done at 27 Plus minus 2 degree centigrade.

👉Slump test is suitable for concrete of medium to high workability, compacting factor test is more accurate than slump test, especially for concrete mixes of medium and low workability.

👉Vee-bee test is suitable for stiff concrete mixes having low and very low workability.