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Question
ratio of rcc 1:1.5:3 grade of concrete ,7days& 14&28 days 
after curing how much strength of compressive strength in 
rcc slab
 Question Submitted By :: Civil-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
In General for Nominal Mix it is considered as M20 Grade. So its 7 days and 28 days strength shall be not less than 50% and 100% respectively. For design mix it may workout to M25/M30 Grade depends upon the input material. 
Is This Answer Correct ?    2 Yes 2 No
Guruprasad
 
Answer
# 2
For 7,14 & 28 day concrete got the strength is 65%,90% and 99% 
Is This Answer Correct ?    0 Yes 1 No
Kamalesh
 
 
 
Answer
# 3
techanical 
Is This Answer Correct ?    0 Yes 7 No
Ceenu.143
 

 
 
 
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