|Wed Jan 11, 2017||Total posts : 4
|Join date: Oct 2015|| Topic: Which cement is better for RCC roof, PPC or PSC?
I am confused about whether to choose PPC or PSC cement for RCC roof....Planning to buy ultratech brand but which type to choose. Please suggest.
|Thu Jan 12, 2017||Post #1|
|S L Gupta (Civil Engg)|
Join date: Mar 2008
For engineering purposes, there
are many types of cement but in general, ‘Ordinary Portland Cement’
(OPC) which is available in three grades should be used for house
33 Grade Ordinary Portland Cement
ordinary 'Portland' cement is used maximum in the country. It is more
suitable cement for masonry and general concrete works where the members
are not taken to very high stresses. It is not suitable where
‘Sulphate’ is in the soil or in the ground water.
43 Grade Ordinary Portland Cement
grades of cement are used where high early strength in 1 to 28 days
range is required. These days the ‘Structural Engineers’ propose these
cements mainly for RCC works where a member takes high tensile stress. 53 Grade Ordinary Portland Cement
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.
Caution in the use of 53 grade cement in construction:
The strength of 53 grade cement does not increase much after 28th day
because of early gain while 33 grade cement continues to gain strength
after 28th day.
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.
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
|Mon Sep 28, 2020||Post #3|
Join date: Jul 2020
| Post subject: I would say PSC Cement |
Cement is very signinficant ingredient of construction. So its very important to use an apt cement grade
for your project or house whatever you are constructing.
Coming to your topic,
you should refer some basic below words to understand things.
PSC’s chemical composition gives it several advantages over ordinary cement. Apart from being eco-friendly, it has ultimate compressive strength and offers excellent resistance to chloride and sulphate attacks. This feature lowers the risks of cracking and improves workability. It boasts a superior finish and minimized shrinkage cracks.
PSC cement can be used for all types of residential and commercial projects. It complements work on dams and other water retaining structure due it is high resistance alkali-silica reactions and fewer shrinkage cracks. For this reason, it is mostly used for marine constructions. You can now buy PSC grade cement online from XFACTORY.IN from top brands like Birla Gold Royal, Penna Suraksha, Deccan, JSW cement at best prices.
PPC’s hydration process is slower than PSC cement, therefore, making it suitable for mass concreting. It shows greater resistance to aggressive weathers and is cheaper than PSC. PPC cement has an amazing pore refinement leading to an improved density of concrete. This also helps in reduced bleeding due to high fineness in the cement.
So, hope you have read the above details,
YOU can use both of them as cement and for great bonding purpose because they both are having great strength charecteristics. But boththe cement typoes are having theri specific yuse over specific purpse, otherwise we can use them for other general purposes too.
As per my perspective if you have previlage to use both the cement then I would say you should use PSC Cement.
|Wed Feb 17, 2021||Post #4|
Join date: Jan 2021
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Cement-Construction Questions (38)
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