engleski

Comparative environmental and mechanical performance assessment of local limestone calcined clay cement

Cement is the most energy and CO2 emission intensive part of concrete production. The most promising solution to reduce CO2 emissions by another 25% by 2030, using existing industry infrastructure, is to substitute clinker in large quantities with supplementary cementitious materials (SCM). In this study, the environmental and mechanical performance of concrete with low CO2 cements produced from a combination of Croatian natural clays and limestone is investigated. A detailed raw material screening study served as the basis for the selection of SCMs. The environmental contribution was evaluated using a Life Cycle Assessment (LCA) tool with a cradle-to-gate approach. The results were compared and evaluated according to the mechanical strength of each blend. Subsequently, this study highlights the positive impact that the use of such a material could have at a regional level.

high volume SCMs, Cement production, LCA, Calcined clay, Circular economy

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