Building Materials The basic purpose of a retarder in concrete is To improve the workability of concrete mix To decrease the initial setting time of cement paste in concrete To render the concrete more water tight To increase the initial setting time of cement paste in concrete To improve the workability of concrete mix To decrease the initial setting time of cement paste in concrete To render the concrete more water tight To increase the initial setting time of cement paste in concrete ANSWER DOWNLOAD EXAMIANS APP
Building Materials In a mortar, the binding material is Cement Sand Surkhi (brick-dust) Cinder Cement Sand Surkhi (brick-dust) Cinder ANSWER DOWNLOAD EXAMIANS APP
Building Materials The compound of Portland cement which reacts immediately with water and also sets first is Tri-calcium aluminate Tetra calcium alumino ferrite Di-calcium silicate Tri-calcium silicate Tri-calcium aluminate Tetra calcium alumino ferrite Di-calcium silicate Tri-calcium silicate ANSWER DOWNLOAD EXAMIANS APP
Building Materials Pig iron made from haematite ores free from sulphur, phosphorus and copper, is known as Mottled pig Grey or foundry pig White or forge pig Bessemer pig Mottled pig Grey or foundry pig White or forge pig Bessemer pig ANSWER DOWNLOAD EXAMIANS APP
Building Materials If āPā is the percentage of water required for normal consistency, water to be added for determination of initial setting time, is 0.85 P 0.75 P 0.70 P 0.80 P 0.85 P 0.75 P 0.70 P 0.80 P ANSWER DOWNLOAD EXAMIANS APP
Building Materials The cast iron when heated to red heat with powdered red haematite in an oven for increasing its toughness, is converted to White cast iron Mottled cast iron Grey cast iron Toughed cast iron White cast iron Mottled cast iron Grey cast iron Toughed cast iron ANSWER DOWNLOAD EXAMIANS APP
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