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Influence of copper slag as supplementary cementitious material in mortar

10.24050/reia.v20i40.1709
Published 2023-12-19
Articles

Abstract

The high consumption of Portland cement (OPC) has a significant impact on the environment due to the generation of greenhouse gases and the use of non-renewable raw materials during its manufacturing. Therefore, the search for alternative materials to reduce cement consumption is crucial in the pursuit of sustainability. For this reason, copper slag (CS) as a supplementary cementitious material (SCM) in the production of mortars with lower OPC content is an option to create a sustainable environment. This study investigated the influence of CS on workability, compressive strength, and flexural strength at different curing ages. Mortars were prepared with 0%, 10%, 20%, 30%, 40%, and 50% CS as partial replacement for OPC, where mortars with CS demonstrated increased flowability. The mechanical properties were monotonically affected during the initial evaluated ages (7, 28, and 90 days), with mortars containing higher CS content showing the greatest loss of strength. However, at 150 days of curing, the 10% CS mixture exhibited a compressive strength of 43.6 MPa, which was 7.6% higher than the reference mixture.

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Authors

  • Yimmy Fernando Silva Urrego

    Pontificia Universidad Católica de Chile - Chile

  • Gabriel Antonio Vizcaíno Méndez

    Pontificia Universidad Catolica de Chile - Chile

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