
Flexural Strength Concrete — What, why, how? – Nevada ...
Specifiions and investigation of apparent low strengths should take into account the higher variability of flexural strength results. Standard deviation for concrete flexural strengths up to 800 psi ( MPa) for projects with good control range from about 40 to 80 psi ( to MPa). Standard deviation values over 100 psi ( MPa) may ...