According to IRC:15-2011, Characteristic Flexural Strength at 28 days is ____________(a) 4 N/mm^2(b) 4.5 N/mm^2(c) 5 N/mm^2(d) 3.5 N/mm^2I got this question in an international level competition.My question is taken from Road Method of Mix Design in division Concrete Mix Design of Concrete Technology

According to IRC:15-2011, Characteristic Flexural Strength at 28 days

1.	According to IRC:15-2011, Characteristic Flexural Strength at 28 days is ____________(a) 4 N/mm^2(b) 4.5 N/mm^2(c) 5 N/mm^2(d) 3.5 N/mm^2I got this question in an international level competition.My question is taken from Road Method of Mix Design in division Concrete Mix Design of Concrete Technology
Answer» Right answer is (B) 4.5 N/mm^2 The best I can EXPLAIN: According to IRC:15-2011, Characteristic Flexural Strength at 28 DAYS is 4.5 N/mm^2 and REST all VALUES don’t stand anywhere.

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