Strength and Durability-Related Properties of High Performance Concrete
with Mineral and Chemical Admixtures
The IUP Journal of Structural
M Vijaya Sekhar Reddy, I V Ramana Reddy and C M Ravi Kumar
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The paper presents experimental studies conducted on two grades of High Performance Concrete (HPC) mixes of M50 and M60 using mineral and chemical admixtures in various proportions. The main purpose of this investigation is to develop confidence among user agencies in India to use mineral and chemical admixtures in a desirable proportion in most of the construction works. Overall, the paper highlights the usage of admixtures to achieve high strength concrete mixes and from the experimental investigation, it is clear that mineral admixtures contribute effectively a lot not only for achieving durability but also high strength.
Concrete is considered as durable and strong material. Reinforced concrete is one of the most popular materials used for construction around the world. Reinforced concrete is exposed to deterioration in some regions especially in coastal regions. Therefore, researchers around the world are directing their efforts towards developing a new material to overcome this problem. Invention of large construction plants and equipments around the world added to the increased use of material. This scenario leads to the use of additive materials to improve the quality of concrete. As an outcome of the experiments and researches, cement-based concrete which meets special performance with respect to workability, strength and durability known as ‘High Performance Concrete’ (HPC) was developed.
HPC can be designed to give optimized performance characteristics for a given set of load, usage and exposure conditions consistent with the requirements of cost, service life and durability. It does not require special equipments except careful design and production. It has several advantages like improved durability characteristics and much lesser micro-cracking than normal strength concrete.
Structural Engineering Journal, High performance concrete, Mineral and chemical admixtures, Strength and