Investigating the Effects of Substituting Non-fired Black Soil Waste for Cement on the Mechanical and Flubility Properties of Concrete

A b s t r a c tConsidering cement as the main constituent material of concrete, in recent years, it has received significant attention from researchers and scientists in the construction industry due to high direct and indirect costs. Non-burnt black soil, which is extracted as waste material from ceramic tile factories, is a recognized problem, and its utilization in other industries can have a positive impact on environmental preservation. In this study, 216 samples were prepared in the form of 24 mix ratios and at ages of 7, 28, and 90 days. After conducting compressive strength and slump tests, as well as electron microscopy imaging, it can be observed that the optimal utilization of non-burnt black soil waste can bring about changes in the compressive strength of concrete at higher ages, indicating the potential use of this waste as a substitute for cement in concrete to reduce the cost of the final product and promote environmental preservation towards sustainable development. In this study, it was observed that a replacement percentage of 5% and 10% of black soil with cement at 28 days and a replacement percentage of 15% at 90 days can be introduced as the optimal substitution percentage.