Self-compacting high-performance concrete in terms of mixing proportions and procedure

Abed, Mohammed (2018) Self-compacting high-performance concrete in terms of mixing proportions and procedure. Concrete Structures, 19. pp. 22-27. ISSN 1586-0361

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Abstract

Self-compacting high-performance concrete (SCHPC) is a special type of concrete, which could perform optimally with respect to flow characteristics, strength, transport properties and durability while maintaining the required service life under a given set of material load exposure conditions. Therefore, the production of SCHPC involves more stringent control on the selection of constituent materials than do other types of concrete. Optimal mix design of SCHPC is assessed to optimise fresh and hardened properties. The optimisation has been based on the basic material aspects of SCHPC, namely, aggregate fraction distribution, water to cement (w/c) ratio, and cement content, in addition to the mixing procedure. Thus, all the proposed factors have to be considered to achieve the maximum possible compressive strength by taking into considerations the minimum required highrange water reducer admixture (HRWRA) dosage. SCHPC proved its sensitivity to the ingredient proportions and mixing procedure, which is much more than other types of concrete, where they had a significant effect on the compressive strength and workability performance of SCHPC.

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