Civil Engineering - Concrete Technology - Discussion
Discussion Forum : Concrete Technology - Section 3 (Q.No. 36)
36.
Pick up the incorrect statemnt from the following. For performing compressive strength test of cement
cement and standard sand mortar are used in the ratio of 1 : 3
water is added at the rate of 
+ 3.0 percentage of water where P is the percentage of water for standard consistency
+ 3.0 percentage of water where P is the percentage of water for standard consistencyA cube mould of 10 cm x 10 cm x 10 cm is used
The perpared moulds are kept in a atmosphere of 90% relative humidity
The temperature of water in the submerged tank for curing moulds, should be 27° ± 2°C.
Discussion:
36 comments Page 4 of 4.
Adnan said:
9 years ago
Option C and D are incorrect.
DARSHAN H A said:
9 years ago
At least 90% relative humidity for 24 hours and cube size 7.06cm x7.06cm. Options C and D are wrong.
Soumya choudhuru said:
1 decade ago
But as per code it is 100% for 24+/-.5hrs.
Anooooo said:
1 decade ago
90% relative humidity for 24 hours.
Aravind gottumukkala said:
1 decade ago
Absolutely answer is C, The mould is of 7.06*7.06*7.06 (cm) with area of face of the cube being 50 cm^2.
Apurba said:
1 decade ago
Cube mould size is 70.6mm*70.6mm*70.6mm. So option C is correct.
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