Civil Engineering - Concrete Technology - Discussion
Discussion Forum : Concrete Technology - Section 3 (Q.No. 6)
6.
If the engineer-in-charge approves, the 10 cm cubes may be used for the work test of concrete provided maximum nominal size of aggregate, does not exceed
Discussion:
33 comments Page 1 of 4.
Prakash said:
7 years ago
If it's RC structure that maximum size of the coarse aggregate is 1/5th min dimensions of RC member so =1/5*10=2cm (20mm).
Otherwise, if it's pc structure the maximum size of the coarse aggregate is 1/4th of the min dimensions of PC member so=1/4*10=2.5cm(25mm).
Now for this question they mentioned cube that means it's pc structure so the answer will be the 25mm is correct.
Otherwise, if it's pc structure the maximum size of the coarse aggregate is 1/4th of the min dimensions of PC member so=1/4*10=2.5cm(25mm).
Now for this question they mentioned cube that means it's pc structure so the answer will be the 25mm is correct.
(2)
Arunvishnu said:
5 years ago
We know, for RCC, max. Aggregate size = 1/5th of the least lateral dimension of mould.
Similarly for PCC, max size of aggregate is 1/4th of least dimension of mould.
Here ,if it is RCC, Max size of aggregate =(1/5)*100 mm = 20mm.
If PCC, Max aggregate size = (1/4)*100 = 25 mm.
Similarly for PCC, max size of aggregate is 1/4th of least dimension of mould.
Here ,if it is RCC, Max size of aggregate =(1/5)*100 mm = 20mm.
If PCC, Max aggregate size = (1/4)*100 = 25 mm.
(10)
PIYUSH SINGH said:
1 decade ago
10 cm cube can be used for aggregate of size less than or equal to 10 mm, as a true representative sample can be obtained, also strength of the 10 cm cube will be more than the 15 cm cube as end resistance is very high in case of 10 cm cube.
Baloch said:
9 years ago
I think given data's are in millimetres not centimetres,
20 mm is normal size segregates (which can be used in sampling).
40mm is used for mass concreting and 10mm is for flooring etc.
20 mm is normal size segregates (which can be used in sampling).
40mm is used for mass concreting and 10mm is for flooring etc.
Garry said:
8 years ago
Correct answer will be One by fourth of the size of members are the size of member is 10 centimetre so the nominal size of aggregate will be 25 mm.
Hassan bin irshad said:
1 decade ago
How can aggregates of 20cm = 8in can be used in mould/sample/specimen of 10cm = 4in which is smaller in dimension than that of aggregates.
Nitu Sharma said:
1 decade ago
According to IS 456-2000 we can only use the aggregates of size up to 1/4th of the size of our member or structure.
Ayon Som said:
9 years ago
The unit in the answer should be in "mm" instead of "cm".
So, the correct answer will be 25 mm instead of 25 cm.
So, the correct answer will be 25 mm instead of 25 cm.
Aravind gottumukkala said:
1 decade ago
The units in the options must be mm, because max size of coarse aggregate used in rcc works is limited to 40mm.
Prem meena said:
8 years ago
For 10 cm cube size of aggregate 20mm or less and for 15 cm cube size of aggregate more than 20mm is used.
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