why the compressive strength of concrete is calculated only after 28 days.why not after 25, 26,27 days..
- 7 Answers
- 18983 Views
- I also Faced
- E-Mail Answers
Answer Posted / sagar sontakke
As soon as we add water to the dry content of the concrete, process of heat of hydration starts and this process will require a very long time to complete.Almost 90% to 95% of this process is completed within 28 days and remaining takes a year or two.This means that concrete attains 90% of the strength at 28 days. So to judge whether concrete has attained the desired strength, we have to test the concrete at 28 days.
| Is This Answer Correct ? | 12 Yes | 2 No |
Post New Answer View All Answers
16 questions out of 55 were from the book GUPTA N GUPTA OBJECTIVE of civil engineering. Total ques were 4 ques from hydraullics, 7 from BMC, 4 FROM SOM, 4 from soil mechanics, 6 from transportation, 5 from engineering drawing.
What is reinforced concrete?
In earth work 1300 cum soil how to calculate how many liters require in water
if i have to draw bending moment diagram of 4 way continous span then how to create it and how to find reaction?
What is Curtailing of R/F
for a column of size 400*230mm column reinforcement= 8-20x(cant write the symbol,i hope u guys undersstand,something like (fi) column stirups=8x@(4l) 230c/c 1)what does these mean 2)how to calculate quantity of steel for this column(ceiling height 11 ft)
I have an plot with area 35*47 = 182.77 sq yards. Out of this iam planning to construct house with 1350 sqfeet each floor .iwanted to build a G+2 house.Need cost estimation for each item
What is the difference between absorption & adsorption and sorption?
WAP to print 1) 1 1 1 1 1 1 1 1 1 1 2) 1 2 3 4 5 6 7 8 9 10
What is the use of water table & Kreb stone for drain
can i get civil engineering test papers.......?????
What is componsation
1.Fe500 and Fe550 having more yield strength than Fe415.But why are we prefering Fe415.? 2. d^2/162 formula for knowing the steel wt/m apply all these three? Thanks.
Could you please give me an answer to the mixing proportion of concrete M1 grade (sterngth of 1 MPa)?
what is cement wastage percentage in NHAI ROAD WORKS
