Effect of flyash as cement replacement material and pore filling material in concrete

This paper dwells on the function of fly ash as a cement replacement material and pore-filling material in the concrete and the resultant effect on strength properties. The investigations revealed that the optimum percentage of substitution of fly ash for cement varies with the w/c ratio of the concrete. The higher quantities of cement can be replaced in the case of lower w/c ratios and vice-versa. It is also observed that the compressive strength of the concrete increases due to the pore-filling effect of the fly ash. Copyright (C) 2022 Elsevier Ltd. All rights reserved.

Automated summary

This paper focuses on the function of fly ash as a cement replacement material and pore-filling material in concrete, and its impact on strength properties. The research reveals that the optimum percentage of fly ash substitution for cement depends on the water-to-cement ratio of the concrete. Higher amounts of cement can be replaced when the water-to-cement ratio is lower, and vice versa. It is also observed that the compressive strength of the concrete increases due to the pore-filling effect of fly ash.