1.

According to IRC:15-2011, Minimum cement content for 4.5 N/mm^2 characteristic flexural strength for OPC shall _____________(a) Shall not be less than 360 kg/m^3(b) Shall not be less than 425 kg/m^3(c) Shall not be less than 340 kg/m^3(d) Shall not be less than 500 kg/m^3I had been asked this question in exam.My question is taken from Road Method of Mix Design topic in chapter Concrete Mix Design of Concrete Technology

Answer»

The correct option is (a) Shall not be less than 360 KG/m^3

The best EXPLANATION: According to IRC:15-2011, Minimum cement content for 4.5 N/mm^2 characteristic flexural strength for OPC shall not be less than 360 kg/ m^3 and for PCC it shouldn’t be less than 425 kg/m^3.



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