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Question
Cube tests of concrete are failed at 7 days and 28 
days.What is your next action?
 Question Submitted By :: Guest
I also faced this Question!!     Rank Answer Posted By  
 
  Re: Cube tests of concrete are failed at 7 days and 28 days.What is your next action?
Answer
# 1
NEXT ACTION IS NON DESTRUCTIVE TEST 
Is This Answer Correct ?    45 Yes 9 No
Imam
 
  Re: Cube tests of concrete are failed at 7 days and 28 days.What is your next action?
Answer
# 2
ensist contractor to hold skilled man power with quallity
material. note the result in daily work progress and mark
on structure which is not as per specification. finally go
for NDT if also structure fails then we have to demolish &
reconstruct the same
 
Is This Answer Correct ?    31 Yes 4 No
Abhijit
 
 
 
  Re: Cube tests of concrete are failed at 7 days and 28 days.What is your next action?
Answer
# 3
NDT testing has to be done and if it fails then go for
recto method that is strengthing of concrete and concern is
not demolish it's time taken and it will effect time and
finacial.
 
Is This Answer Correct ?    7 Yes 3 No
Kishorecivil
[Ksk Surya]
 
  Re: Cube tests of concrete are failed at 7 days and 28 days.What is your next action?
Answer
# 4
Use concrete tester rebound hammer for strength after
calibration.
Perform test as per standard,if results is more than 100 %
of requirement by calibration graph of hammer continue the
structure.
 
Is This Answer Correct ?    8 Yes 1 No
Shafqat
 
  Re: Cube tests of concrete are failed at 7 days and 28 days.What is your next action?
Answer
# 5
Go for NDTest, if it is not satisfied go for Core test that
is also failed go for concrete strengthing process As per
structural consultant comments
 
Is This Answer Correct ?    14 Yes 2 No
Nravindran
[Ozonegroup]
 
  Re: Cube tests of concrete are failed at 7 days and 28 days.What is your next action?
Answer
# 6
Any is code not give the clause regarding demolishing of
structure if cube fails in 28 days. but IS 456 & 516 give
the clause if strength of cube is less than FCK then
proceed for NDT Test i.e Rebound hammer if fail then go for
Ultrasonic test after all the NDT fail then proceed for
Core cutter also if U found result less then FCK then go
for Retrofitting with suggestion of consultant.
 
Is This Answer Correct ?    19 Yes 1 No
Vaibhav Jadhav
 
  Re: Cube tests of concrete are failed at 7 days and 28 days.What is your next action?
Answer
# 7
Well. When Concrete cube test result fails at 28th day then
go for concrete core cutting and check the compressive
strength in it. Number of cores shall be as per the
engineer incharge's decision but should not be less than 3
nos. IS:456 says if the core test fails then go for load
test. IS : 456 also says that NDT can be done . But with
rebound hammer test only surface hardness will be known and
hence this test result is not reliable and hardly anyone
suggests for this test.
 
Is This Answer Correct ?    12 Yes 2 No
Vimalsekar
 
  Re: Cube tests of concrete are failed at 7 days and 28 days.What is your next action?
Answer
# 8
Go for NDT If it is not satisfied go for Core test that
is also failed go for there possibale demolisan that coloum
it is not possible we go for Restrengthing.
 
Is This Answer Correct ?    1 Yes 1 No
Prabhakara Rao.b
 

 
 
 
Other Civil Engineering Interview Questions
 
  Question Asked @ Answers
 
concrete strenght is increased if using sisal fibre in concrete?   1
WHICH KIND OF ADDITIONAL PILE DRIVEN TO INCREASE THE CAPACITY OF SUPPORTING LOADS ON VERTICAL PILES   3
what are the types of bridges   3
What is the percentage of wastage in steel reinforcement n how to control it? Hiranandani 1
Mixing of cement, sand & stone chips with oil will not give strength because   1
How much steel required in 900 square feet slab?   11
shape of aggregates used in concrete should be rounded/cubical or elongated/flaky.   7
how is shear resisted in a structure?   2
M.C.Q   2
Wat is the optimum value of tensile strength of concrete after 28 days?   2
rate of 1cum brick masonry please immidate bestech 2
What is the acceptance criteria to determine the "Core density" of "DBM or BC" course,for any grade as per "MORTH" guidelines in road construction work ? NCC 2
 
For more Civil Engineering Interview Questions Click Here 
 
 
 
 
 


   
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