STUDY ON DURABILITY CHARACTERISTICS OF HIGH PERFORMANCE CONCRETE (HPC)

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Date
2006-05
Authors
EL OTTOL, RAED M A
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Abstract
The recent developments in the field of high-performance concrete (HPC) represent a giant step toward making concrete a high-tech material with enhanced characteristics and durability. These developments have even led to it being a more ecological material in the sense that the components admixtures, aggregates, cementitious materials and water are used to their full potential to produce a material with a superior durability and longer life cycle. Environmental factors, especially the climate, have significant influence on durability of concrete material. This dissertation aims to investigate the durability characteristics of High-performance concrete material which can resist the environmental factors more than-ordinary' con crate not only because H:ghperformance concrete is less porous, but also because its capillary and pore networks are somewhat disconnected due to the development of self desiccation and the effects of cementitious materials such as Fly ash, Silica Fume and Slag result reduces the water demand, improve the workability, and enhances durability to reinforcement corrosion, sulfate attack, and alkali-silica expansion. In high-performance concrete (HPC), the penetration of aggressive agents is quite difficult and only superficial. Therefore, HPC must be cured quite differently from ordinary concrete. Field experience in many researches has shown that if HPC is properly designed and cured, performs satisfactorily in very harsh environments.
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PERFORMANCE CONCRETE
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