IndiaBIX

Civil Engineering - Concrete Technology - Discussion

Discussion Forum : Concrete Technology - Section 1 (Q.No. 34)
Concrete Technology
34.
The preliminary test is repeated if the difference of compressive strength of three test specimens, exceeds
5 kg/cm2
8 kg/cm2
10 kg/cm2
12 kg/cm2
15 kg/cm2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
13 comments Page 2 of 2.
Ashish said:   7 years ago
The individual variation of test reading should not exceed 15% of the average.
Sagar said:   7 years ago
What action shall be taken if the sample result is invalid based on individual variation is more than 15% despite having the individual test result is 35.17 mpa for M30 grade concrete.

Shall one go for in situ tests?

Please explain me.
Sandesh Nepal said:   4 years ago
As per IS code, the average compressive strength of three values shall be taken as the representative of batch provided the individual variation is not more than 15% of the average strength or difference of 1.5 N/mm2 or 5% cubes fails. Then the test is repeated.
(1)
Post your comments here:

Your comments will be displayed after verification.

Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers