Impact of Partial Replacement of Ordinary Portland Cement With Lime Stone Powder on the Strength and Workability of Concrete

Student: Sulaimon Olayinka Animasahun (Project, 2025)
Department of Civil Engineering
Osun State Polytechnic, Iree, Osun State

Abstract

High strength concretes offer a technological breakthrough in the building of columns, beams and shear walls because, with concrete two or three times as strong as ordinary, the concrete cross-sectional area or the amount of steel can be reduced, thus lessening the dead weight of the building, relieving the strain on the lower columns and foundations, and reducing costs. High strength concrete has not been achieved by chance; it is a concrete in which all the factors that contribute toward an increase in strength must be maximized where a s those that can lessen strength must be reduced to a minimum. Ordinary Portland cement (OPC) has become a prevalent material, it is a highly demanded material in the production of concrete. However, the cement industry is deemed responsible for release of significant and damaging amount of carbon dioxide (CO2) into the atmosphere, as at 2021, global emissions from the manufacture of cement stood at 1.7 billion metric tons of CO2 [Ian Tiseo, 2023]. In addition, the amount of energy required to produce OPC is only next to steel and aluminum. Thus, it is imperative to act now to reduce any CO2 emissions related to cement production. This has therefore provided increased impetus for research into alternative concrete binders.

Keywords
impact partial replacement ordinary portland cement stone powder strength workability
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