Question

The ratio of splitting tensile strength and design compressive strength of M25 concrete is

• A. 0.14
• B. 0.2
• C. 0.31
• D. 0.1

Answer 1

The correct option is B 0.2

Splitting tensile strength $f_{ct}=0.66f_{cr}$

Design compressive strength
$=0.45f_{ck}=0.45\times 25=11.25MPa$

$f_{ct}=0.66f_{cr}=0.66\times 0.7\sqrt{f_{ck}}$

$=0.66\times 0.7\times \sqrt{25}$

$=0.66\times 0.7\times 5=2.31MPa$

$\text{Ratio}=\frac{2.31}{11.25}=0.2$