There are various types of cement used in the construction, each type has its own different properties, uses & benefits, depending on the composition material used during its manufacturing.
Cement is a binding material that forms a bond between the aggregates and the material.
With the development of technology, the quality and types of cement has also developed, hence there are different types of cement used in construction works.
Basic types of cement and their properties:
Ordinary Portland cement (OPC):
Ordinary Portland cement is the most extensively used cement suitable for all normal concrete construction.
It is the most commonly produced cement, used worldwide with an annual world production of approximately 3.8 million cubic meters per year.
This cement is suitable for all types of concrete construction.
Portland Pozzolana Cement (PPC):
Portland pozzolana cement is prepared by grinding pozzolana clinker with Portland cement.
It can also be produced by adding pozzolana with gypsum or calcium sulfate by uniformly mixing Portland cement and fine pozzolans.
This cement has better resistance to various chemical attacks on concrete than ordinary Portland cement and thus it is widely used.
It is used for laying marine constructions, sewage works, sewage works and concrete underwater such as bridges, piers, dams and large concrete works, etc. Also, read types of cement FAQ.
Rapid Hardening Cement:
Rapid hardening cement attains the high strength within the initial days.
It is used in the construction where the formwork is completed at an early stage and it is similar to Ordinary Portland Cement.
This cement has a high amount of lime and contains an increased c3s content material and better grinding which develops higher strength than OPC within the early stages.
The strength of rapid hardening cement after 3 days is similar to the strength of OPC after 7 days with the same water-cement ratio.
Thus, the advantage of this cement is it increases the speed of construction and reduces the cost of construction by saving the cost of the formwork.
Rapid hardening cement is used in prefabricated concrete construction, highway works, etc.
Quick setting cement types:
This cement is quick-setting cement, while the strength gain is the same as Ordinary Portland Cement.
In each circumstance, the formalities can already be eliminated.
Quick setting cement is used, where the work is to be accomplished in a quick interval of time and for concreting in static or flowing water. Also, read types of cement conclusion.
Low heat cement:
Low heat cement is produced by raising the ratio of C2S to lower than 6% whereas maintaining a proportion of tricycle aluminium.
This makes concrete to provide less heat of hydration, thus used in larger concrete constructions than gravity dams because low heat of hydration prevents the breakdown of concrete.
This cement has increased efficiency in opposition to sulfates, less reactive and the preliminary setting time is increased than OPC.
Sulfate resisting cement:
This cement is used to reduce the risk of sulfate attack on concrete, thus used within the construction of foundations where the quantity of sulfate in the soil is excessive.
This cement has decreased the content material of C3A and C4AF.
Blast Furnace Slag Cement:
Blast furnace slag cement is obtained by grinding the cinder with approximately 60% slag and more or less resembles the properties of Portland cement.
Types of cement can be used for various tasks which can be economic considerations predominate.
High Alumina Cement:
High alumina cement is obtained by melting the mixture of bauxite, lime and grinding it with clinker.
It is more hardened cement with initial and final setting times of 3.5 and 5 hours respectively.
The compressive strength of this cement has increased much more than the exceptional Portland cement.
It is extra practical and used in works where concrete is subjected to extreme temperatures, frost, and acidic action.
This cement is made of raw material free from iron oxide and it is a type of ordinary Portland cement, i.e. white Portland cement.
It is expensive and used for architectural purposes such as going through precast curtain walls and panels, terrazzo surfaces, etc.
Also for interior and exterior decorative work such as buildings, slabs, floors, decorative concrete products, gardens path, for the outdoor rendering of swimming, etc.
Colour Cement Types:
It is made by mixing 5- 10% mineral pigments with ordinary cement. They are extensively used for decorative works in flooring.
Air Entraining Cement:
During the clinker grinding, air-entraining cement is produced by adding indigenous air-entraining agents such as resins, gum, sodium salts of sulfates, etc.
This kind of cement is particularly favoured with small water-cement ratios to improve work efficiency and improve the frost resistance of concrete.
Expander types of Cement:
Expressive cement expands slightly over time and does not shrink after hardening. This cement is mainly used to grind anchor bolts and prestressed concrete ducts.
Hydrographic cement is prepared by mixing water-repelling chemical substances and has excessive reasonableness and strength.
It has the property of draining water and stays unaffected throughout monsoon or rain.
Hydrophobic cement is especially used for constructing water structures such as dams, water tanks, spillway, water maintenance structures, etc.
Types of Cement Conclusion:
Typically, OPC 53 grade cement is suitable for all RCC structures such as footings, columns, beams and slabs.
PPC and PSC cement are used for general construction works and strongly recommended for masonry plaster.
The use of PPC reduces the cost of construction and helps improve the quality of the structure.