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Technical Guides
Composition of High Performance Concrete
Jun 28 , 2021

HPC is comprised of the same materials as that of conventional cement concrete. The use of some mineral and chemical admixtures enhances the strength, durability, and workability qualities to a very high extent. The composition of HPC usually consists of the following materials:

1.Cement: Chemical and physical properties of cement can help in selecting the desired cement to produce high-performance concrete. For instance, cement with lower C3A is the most desired type of cement to produce high-performance concrete because the C3A creates incompatibility of cement with a superplasticizer. Nonetheless, a certain quantity of C3A is important for cement from a strength point of view.

2.Water: Water is a crucial component in HPC, and it should be compatible with cement and mineral/chemical admixtures. The water used for mixing and curing should be clean and free from injurious quantities of alkalis, acid, oils, salt, sugar, and any organic materials

3.Fine Aggregate: Coarse fine aggregate is desired compared to finer sand to produce high-performance concrete, since finer sand increases the water demand of concrete.

4.Coarse Aggregate: The selection of coarse aggregate is crucial since it may control the strength of high-performance concrete. It is advisable to avoid flaky and angular aggregates.

5.Superplasticizer: It is an essential component of HPC and is added to the concrete mix to reduce water to cement ratio.

6.Cementitious Materials: Ground Granulated Blast Furnace Slag is suitable for use in high-strength concrete at dosage rates of about 50% and above, based on the applications and performance requirements. However, for very high strengths of more than 100 Mpa, it is necessary to use the slag in conjunction with ultrafine materials.

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