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Quality |
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What is grade of concrete? |
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What tests are carried out by L&T Concrete to determine
the strength of concrete? |
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What is meant by slump? Does the extra slump used for pumpable
concrete affect the strength of concrete? |
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What is type of cement used?
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What is grade
of concrete? |
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Grade of concrete refers to the strength
of concrete after a period of 28 days, i.e. M20 grade refers
to strength of concrete after 28 days as 200kg / cm square.
While ordering L&T Concrete customer is expected to
specify the grade depending on his requirement.
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What tests
are carried out by L&T Concrete to determine the strength
of concrete? |
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Concrete cubes measuring 150mm x 150mm
x 150mm are cast at regular intervals and the same cubes
are tested to find out crushing strength on 7th and 28th
day. The strength of the cube, which is the representative
sample of the concrete, will indicate strength of concrete,
produced by L&T Concrete.
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What is meant
by slump? Does the extra slump used for pumpable concrete
affect the strength of concrete? |
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Slump is an indication of water cement
ratio in concrete. Slump is measured in millimeter. More
the slump more is the amount of water in concrete. In case
of pumpable concrete a slump of 80 to 120 mm is desirable.
Without compromising on water cement ratio this high slump
of concrete is achieved by designing the mix and adding
certain admixture to concrete. The strength of concrete
is not affected due to high slump of pumpable concrete.
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What is type
of cement used? |
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For L&T Concrete we use L&T Cement. Grade of cement,
used depends on project specifications could be either of
grade 43, grade 53, or grade P53.
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