53 grade ordinary Portland cement
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All Features
53 grade ordinary Portland cement
IS Designation
This type of cement should confirm according to IS:12269-1987

Uses
53 grades of cement are used where high early strength in 1 to 28 days range is required. These days ‘Structural Engineers’ propose these cements mainly for RCC works, where a member takes high tensile stress.
Design Strength
Design Strength for 28 days= 530 kg/ sq cm
Strength with time
53 grade cement attain early strength. Does not increase much after 28 days.
Initial setting of mix or hydration process.
In addition, due to faster hydration process, the concrete releases heat of hydration at much faster rate initially and release of heat is the highest in case of 53 grades. The heat of hydration being higher, the chances of micro-cracking of concrete is much greater. Thus during initial setting period of concrete, the higher heat of hydration can lead to the damage of micro-cracking within the concrete which may not be visible at surface. 
 
This cracking is different from shrinkage or cracks which occur due to faster dryness of concrete in windy conditions. The situation can be worse when we tend to increase the quantity of the cement in concrete with a belief that such increments are better for both strength and durability of concrete. 
 
Thus it is very essential to be very careful in advance that higher grade cement specially GRADE 53 SHOULD be used only where such use is warranted for making the concrete of higher strength and also where good quality assurance measures are in place by which proper precautions are taken to relieve the higher heat of hydration through chilling of aggregates or by proper curing of concrete 
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Sudhakar: Oct 16 2012 11:41AM
Very good infarmation than q
nathan: Oct 15 2012 8:17AM
kd2
nathan: Oct 15 2012 8:17AM
kd
Ramakrishnan: May 6 2012 9:20PM
Portland Pozzalona Cement [PPC]is the best Cement compared to 43 grade OPC or 53 grade OPC cement
Ramakrishnan: May 6 2012 9:20PM
Portland Pozzalona Cement [PPC]is the best Cement compared to 43 grade OPC or 53 grade OPC cement
Ramakrishnan: May 6 2012 9:18PM
Engineeringi app Forms issued from may 11 to may 31- fees 500-last date of sending forms 31.05.2012
roopesh: Mar 25 2014 3:58PM
very good information which brand of cement you prefered to use ultratech ,acc,bangur
raj: Mar 1 2013 12:05PM
good
Bharathi S: Jul 11 2012 1:54PM
strengthwise no change in 43&53.Only the diffrence is setting time only........
S P Singh: Jan 19 2013 9:30AM
53 grade
babuji: Dec 25 2011 10:25AM
the concrete code say the ppc 33Mpa is more than enough.but the manufaturer say their ultimate is different so this concerpt may change until the code revesion
sathiyaraj vk: Dec 14 2012 5:57PM
opc 43 opc 53 grad cement standard designing
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