Building Materials When a brick is immersed in water for 24 hours and then dried, if No grey or white deposits appear on the surface, the brick is free from soluble salts All listed here 10 percent surface is covered with grey or white deposits, the brick has slight efflorescence 50 percent surface is covered with grey or white deposits, the brick has serious efflorescence No grey or white deposits appear on the surface, the brick is free from soluble salts All listed here 10 percent surface is covered with grey or white deposits, the brick has slight efflorescence 50 percent surface is covered with grey or white deposits, the brick has serious efflorescence ANSWER DOWNLOAD EXAMIANS APP
Building Materials A heavy stone is suitable for Roads Rubble masonry Arches Retaining walls Roads Rubble masonry Arches Retaining walls ANSWER DOWNLOAD EXAMIANS APP
Building Materials Addition of pozzolana to ordinary Portland cement increases Bleeding Heat of hydration Permeability Shrinkage Bleeding Heat of hydration Permeability Shrinkage ANSWER DOWNLOAD EXAMIANS APP
Building Materials Initial setting of cement is caused due to Tri-calcium silicate Tri-calcium aluminate Tetra calcium alumino ferrite Di-calcium silicate Tri-calcium silicate Tri-calcium aluminate Tetra calcium alumino ferrite Di-calcium silicate ANSWER DOWNLOAD EXAMIANS APP
Building Materials Portland cement manufactured from pure white chalk and clay but free from iron-oxide, is known as Low heat Portland cement White cement Rapid hardening cement Quick setting cement Low heat Portland cement White cement Rapid hardening cement Quick setting cement ANSWER DOWNLOAD EXAMIANS APP
Building Materials For a good building stone, its specific gravity should the greater than 2.3 3.7 2.5 2.7 2.3 3.7 2.5 2.7 ANSWER DOWNLOAD EXAMIANS APP
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