Influence of Fly Ash Content on Compressive Strength Development of High Performance Self-Compacting Concrete

Abstract

Abstract: Fly ash has a significant impact on the workability, strength, and durability of self-compacting concrete. In order to explore the influence of fly ash content on the compressive strength of self-compacting concrete, self-compacting concrete with 30%, 45%, and 60% (volume fraction) fly ash content and water-cement ratio of 1.05, 1.15, and 1.25 (volume ratio) was prepared, and the cube compressive strength tests of 3 d, 7 d, 28 d, and 90 d were carried out. The results show that with the increase of fly ash content, the compressive strength of concrete gradually decreases. And then the strength ratio of 3 d/28 d, 7 d/28 d, and 90 d/28 d were analyzed. The results show that fly ash has little influence on the early strength of concrete, but has a greater influence on the later strength. Finally, referring to the European standard CEB-FIP, the influence coefficient of the composite powder mixed with fly ash and cement on compressive strength of self-compacting concrete is explored, which provides a theoretical basis for related engineering applications.

Key words: self-compacting concrete, fly ash content, high performance, compressive strength, influence coefficient

CLC Number:

TU528

WANG Hui, LIU Xuhui, CAI Shengyu, ZHANG Wu. Influence of Fly Ash Content on Compressive Strength Development of High Performance Self-Compacting Concrete[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(5): 1573-1578.

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