Question

While testing the compressive strength of cement concrete, the correct standard conditions (viz temperature, age, humidity and size of the specimen) to be maintained as per IS are

• A. $27\pm 3^{o}C,28days,90\%and15cmcube$
• B. $26\pm 2^{o}C,28days,80\%and15cmcube$
• C. $25\pm 1^{o}C,14days,75\%and10cmcube$
• D. $27\pm 3^{o}C,7days,70\%and10cmcube$

Answer 1

The correct option is A $27\pm 3^{o}C,28days,90\%and15cmcube$

While testing the compressive strength of cement concrete,
$\text{temperature}=27\pm 3^{o}C$,
$\text{age of testing}=28days$,
$\text{humidity}=90\%$,
$\text{size of cube specimen}=15cm\times 15cm\times 15cm$