From Wikipedia:
A cement is a binder, a substance used for construction that sets, hardens, and adheres to other materials to bind them together. Cement is seldom used on its own, but rather to bind sand and gravel (aggregate) together.
In 1824, Joseph Aspdin (A British engineer). uncovered a brand-new building material product. He named it. “Portland cement”. Who obtained the patent for Portland cement on 21 October 1824.
At present cement is an essential building product. Limestone (calcium carbonate ), silica, alumina. and iron oxide (from clay) are the four standards.
components required for making concrete.
53 Grade OPC cement is Used in RCC and pre-stressed concrete of higher grades, cement grouts, instant plugging mortars etc. where initial higher strength is the criteria. 43 Grade OPC Cement are commonly used for plastering works, Non-RCC structures, pathways etc where initial setting time is not of importance.
| Sl No | Brand |
| 1 | UltraTech Cement |
| 2 | Ambuja Cement |
| 3 | Shree Cement |
| 4 | ACC Limited |
| 5 | Ramco Cements Limited |
| 6 | Birla Corporation Limited |
| 7 | Prism Cement Limited |
| 8 | J.K.Cement Limited |
| 9 | J K Lakshmi Cement Limited |
| 10 | India Cements Limited |
OPC has 3 grades that are 33-grade, 43-grade, 53-grade.
Based on the Bureau of Indian Standard, these grades are set apart by their compressive strengths and these strengths are shared in megapascal (Mpa) that is N/mm2. Compressive strength is a proportion of tons per unit area.
Ex: 43 grade strength is 43 N/mm2or 43 MPa.
The strength is determined by the following process mentioned in the I.S Code.
It is higher grade ordinary portland cement that is made use of in Reinforced Cement Concrete (RCC) work, building and construction of
multistory buildings, pre-cast as well as pre-stressed concrete, bridges, high frameworks, roads and so on.
53 grade OPC creates extremely rapid strength and also accelerate the construction work. As per the IS 12269-1987, 3 and 7 days of compressive strength of 53 grade OPC is 27 N/mm2 as well as 37 N/mm2 respectively.
OPC 43 cement shall conform to IS:8112-1989 and the designed strength of 28 days shall be minimum 43 MPa
OPC (43 Grade) can be used in all kind of Concrete constructions – such as RCC, precast concrete and prestressed concrete, Slip form constructions, all kinds of Masonry works, manufacture of cement based products such as pipes, tiles, blocks etc
elearning.vtu.ac.in/newvtuelc/courses/12/enotes/Adv_Conc_Stru/Unit1A-RVR.pdf
https://www.materialtree.com/blog/difference-between-43-grade-cement-and-53-grade-cement/
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