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This paper investigates the potential of expanded clay kiln dust (ECKD) as a sustainable alternative in cementitious materials, aiming to address environmental concerns associated with traditional cement production. The study conducts a comprehensive evaluation, including material characterization, mechanical testing, and microstructural analysis, to assess the performance of ECKD in mortar formulations. Results indicate that ECKD influences various mortar properties, such as workability, air entrainment, and density. Mortar mixes containing 10% of ECKD show enhanced compressive and tensile strength compared to control mixes, indicating its effectiveness as a cement substitute. Moreover, the long-term durability of ECKD samples in seawater revealed promising results, confirming their favorable durability. In conclusion, the study demonstrates the feasibility and efficacy of incorporating ECKD in mortar formulations to mitigate the environmental impact of cement production while enhancing mechanical properties.
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