Answer / d v n potharaju

Grade given here is not the compressive strength but it is
the fineness of the cement.53 grade would be more finer than
the 43 grade.

so 53 grade cement would generate more heat of hyderation
developing strength at rapid rate ,however the final
strength of both the grade wiil be same and to be identified
with finess only .

Answer / deepak katyal

The grade number indicates the minimum compressive strength
of cement sand mortar in N/mm2 at 28 day

Answer / a.raj kumar

43& 53 indicates the compressive strength of that
particular grade,we can say this answer with our course
study ,in the field we can identify by seeing those
gredes on the bags.

Answer / g.karthik kumar

only setting time differ on 43 and 53 grade

Answer / 979mugundhan

43 grade OPC Cement it denotes the compressive strength of
concrete in 43 Mega pascals will attain in 28 days. it is
normally used for pavements, Non RCC structures and which
are not important for initial strength. where as 53 Grade
OPC Cement it denotes the compressive strength of 53 Mega
Pascals will attain in concrete with the 28days, and it is
used for RCC strengths and which are important to gain
initial strength.

Read more:
http://wiki.answers.com/Q/What_is_difference_between_43_and_53_grade_opc_cement#ixzz2CxDY4YFT

Answer / sumit

You will consider By fineness test of cement
And 53 grade is more finer that 43 grade

Answer / ajay bapat

it must be mentioned on cement bag supplied at
site.Although we can cast 7.5cm size cement mortar cubes
(1:3) i.e. one part of cement & 3 parts of standard sand &
must be tested for compressive strength after 28 days
curing. Compressive strength will differentiate the grade.

Answer / saif raza

it is clearly mention on bag,

Answer / t.dhandapani

i think the setting time variation,in 43 grade cement used for
brickwork&plastering.53 grade cement is used for concrete work

Answer / sidharth

with fineness

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