0
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.
What else can I help you with?
What are chemical composition of Air Entraining cement?
Air-entraining cement typically contains the same basic components as ordinary Portland cement, including calcium silicate, calcium aluminate, and calcium ferrite. Additionally, it incorporates specific air-entraining agents, such as surfactants or additives, which create microscopic air bubbles within the cement matrix. These bubbles enhance the cement's workability and durability, especially in freeze-thaw conditions, by providing space for water expansion. The overall chemical composition can vary based on the specific formulation and manufacturer.
What is the difference between white cement and plaster of Paris?
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)
What is sulphur concrete?
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.
Is cement homogeneous?
Yes, cement is considered to be homogeneous because it is a uniform mixture of various compounds like limestone, clay, and gypsum. This results in a consistent composition and properties throughout the material.
Is mixing cement with water and letting it dry a physical change?
No, mixing cement with water and letting it dry is not a physical change; it is a chemical change. When water is added to cement, a chemical reaction occurs, leading to the hardening and setting of the mixture as it forms new compounds. This process is irreversible, distinguishing it from physical changes, which do not alter the chemical composition of the substances involved.
What are the various types of Ordinary Portland Cement?
The various types of ordinary portland cement are,Ordinary portland cement 33 gradeOrdinary portland cement 43 gradeOrdinary portland cement 53 grade
How many types of cement are there according to the composition?
There are three different types of cement,Ordinary portland cementPortland pozzolana cementSpecial cements.
What is suitable for reinforced cement concrete slab ordinary portland cement or Portland Pozzolana Cement?
Ordinary Portland cement is suitable. As per IRC 21, Portland Pozzolana Cement is limited for Plain Concrete only.
What are the different types Cement?
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.
What is the classification of cement?
Cement is classified into different types based on their chemical composition and properties. Common classifications include Portland cement, which is the most widely used type, as well as blended cements, such as fly ash or slag cements, and specialty cements like white cement. Each type of cement has specific applications and characteristics.
Difference between ordinary Portland cement and puzzalona Portland cement?
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).
What is the different between ordinary Portland cement and Portland cement?
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.
What are the advantages of white portland cement?
dis advantage of ordinary portland
What is fineness of cement?
Portland cement (often referred to as OPC, from Ordinary Portland Cement) fineness 300 - 500 m2/kg
What is the density of Ordinary Portland Cement?
The density of Portland cement is 1.44 ton/m3.
What is the time period for expiry of ordinary portland cement?
cement experiy time
What is the specific gravity of Ordinary Portland Cement -43 grade cement?
The specific gravity of Ordinary Portland Cement (OPC) - 43 grade typically ranges from 3.10 to 3.15. This value indicates the density of the cement relative to the density of water, providing insight into its composition and quality. Specific gravity can vary slightly based on the manufacturing process and the raw materials used.
