This type of Cement is manufactured in form of different grades, the most common in India
being Grade-53, Grade-43, and Grade-33. OPC is manufactured by burning siliceous materials
like limestone at 1400 degree Celsius and thereafter grinding it with gypsum.
OPC gives enough comprehensive strength after soaking in water for 3 days, 7 days and 28
days. This is suitable for all types of modern civil engineering construction.
Limestone powder is the main ingredient, followed by clay and gypsum. There are lesser ingredients that make the cement behave better when mixed with water.
cement is a bounding material geo polymar is the chemical composition
Ordinary portland cement based concrete consists of a mixture of aggregates bound together with portland cement. In the presence of water a chemical reaction takes place and the portland cement is hydolysed. At the end of this chemical reaction the cement becomes hard and binds the aggregate particles together.Sulphur concrete is composed of a similar mixture of aggregates, however, and this is the big difference, there is no portland cement involved. Instead the aggregate mixture is bound together by molten sulphur at elevated temperatures. Upon placing, the sulphur concrete is allowed to cool and as it cools the molten sulphur becomes a solid again binding the aggregates together imparting rigidity to the concrete mix.Because sulphur concrete contains no alkaline materials, unlike portland cement mixtures, it is very much more resistant to acid attack and thus finds favour in industry where acid resistant concrete is desirable.
There are only slight chemical and physical differences between gray portland cement and white portland cement. These differences are due to raw material differences and sometimes, though not always, slight differences in manufacturing. The goal is to minimize the oxides (particularly iron and manganese) that impart the grayish color normally associated with portland cement. Souce:PCA (portland Cement Association)
The chemical composition of cement is Calcium oxide, Silicon dioxide, Aluminum oxide, Iron oxide, water, and sulfate. They mix, crush, and blend together limestone, silica (sand and other materials), aluminum, iron, and gypsum.
Yes. The cement used to make concrete usually has sand, aggregate and Portland cement in it. That would make it heterogeneous.
The various types of ordinary portland cement are,Ordinary portland cement 33 gradeOrdinary portland cement 43 gradeOrdinary portland cement 53 grade
There are three different types of cement,Ordinary portland cementPortland pozzolana cementSpecial cements.
Ordinary Portland cement is suitable. As per IRC 21, Portland Pozzolana Cement is limited for Plain Concrete only.
There are three different types of cement,Ordinary portland cementPortland pozzolana cementSpecial cements.There are 3 types of cement,OPC (Ordinary Portland cement)PPC (Portland pozzolona cement)Special Cements.There are many types of cement. These include gray ordinary Portland cement, well cement, hydraulic cement, as well as bagged cement.There are three different types of cement,Ordinary portland cementPortland pozzolana cementSpecial cements.
OPC - Ordinary Portland cementOPC - Materials used - Argillaceous and calcareous materialsPPC - Portland Pozzolona CementPPC - OPC + Pozzolonoc materials(fly ash, volcanic ash, pumicite at the time of grinding).
There are 3 types of cement,OPC (Ordinary Portland cement)PPC (Portland pozzolona cement)Special Cements.
Ordinary Portland cement is the most common cement used in the world, made from stucco, concrete, mortar and other materials. Slag cement is usually mixed with Portland cement and is the substance leftover after metal has been smelted from raw ore.
dis advantage of ordinary portland
Portland cement (often referred to as OPC, from Ordinary Portland Cement) fineness 300 - 500 m2/kg
The density of Portland cement is 1.44 ton/m3.
Kinds of portland cement:Type - 1 - Ordinary portland cementType - 2 - Portland pozzolana cementType - 3 - Rapid hardening cementType - 4 - Low heat cementType - 5 - Sulphate resisting cement.
cement experiy time