Question

The flexural strength (or modulus of rupture) is obtained for the first peak load, Pmax as _______________

(a) Pmax * L/bd^2

(b) Pmax/Ld^2

(c) Pmax * L/bd

(d) Pmax/L/bd^2

I have been asked this question in unit test.

The origin of the question is Flexural Strength of Concrete topic in section Testing of Concrete of Concrete Technology

Answer 1

Right choice is (a) Pmax * L/bd^2

The explanation is: It should be noted that the value obtained may be significantly different from that obtained in a conventional test carried out under load control, where the specimen fails at the peak load.