How to calculate compressive strength of concrete?
Answers were Sorted based on User's Feedback
Answer / erwin severino
The answer should be based on ACI 318 chapter 5 Concrete Quality, Placing, And Mixing. Section 5.6.3.3 states that Strength level of a individual class of concrete shall be considered satisfactory if both of the following requirements are met: (a) Every arithmetic average of any three consecutive strength tests equals or exceeds fc' ; (b) No individual strength test(average of two cylinders) falls below fc' more than 500 psi when fc' is 5000 psi or less; or by more than 0.10fc' when fc' is more than 5000 psi.
Is This Answer Correct ? | 1 Yes | 0 No |
Answer / rakesh
Bhausaheb Mane's
formula is wrong
1 N = 0.001 kN;
1 kN = 1000 N
Is This Answer Correct ? | 0 Yes | 0 No |
Answer / m farooq
How can we say that for 7 days test 70% is necessary..is there any formula
Is This Answer Correct ? | 0 Yes | 0 No |
Answer / arunkumar
Area= 7.09*7.09=50.2681*100=5026.81mm^2
Load=10kn loadarea =1.98 nmm^2
Is This Answer Correct ? | 0 Yes | 2 No |
Answer / abhinav gupta
after 28 days we can test the cube if compressive machine show
1000kN on 7.09x7.09cm cube thus t he compressive strenth of cube is calculeted by = load/area
e.g 10000/50 = 20
Is This Answer Correct ? | 12 Yes | 16 No |
Howmuch bend to be provide for 200/600 BEEM
How many feet are in 4 square yards?
how much quantity of binding wire required for tieing of 1mt of reinforcement bar?
How to know proportions of cement, sand, aggregate in different types of grades like M5, M10, M20, M30?
what is minimum dimension for the kitchen & bed room
Water absorption for stone?
Why we used ther red bricks for construction..
What do mean by freeway ?
what are the criterias for designing a school lab? for e.g a chem lab.Does it depend on room size or no. of students?
What is the ratio of Grades M10,M15,M20,M25,M30,M35,M40.
Can we use the flyash bricks in brick bat coba?
Are cruise ships built for the transatlantic run?