Use of F Type Fly Ash in Cement Mortar With Alternative Mixing Methods

Abstract

In this study, it is focused on the use of fly ash, which is one of the industrial wastes, as a partial replacement of cement and fine aggregate in cement mortar. The feasibility of using fly ash as an alternative to cement and fine aggregates in concrete was determined by examining its effect on strength and durability properties in composites. Fly ash was used in the mixtures with three different mixing methods. These is the simple substitution method, addition method and the partial substitution method. In each method, 10%, 20% and 30% of the material was removed by weight, and a total of ten different mixtures were prepared by adding fly ash instead. As a result of the experiments to determine the properties of the mixtures in fresh and hardened state, the inclusion of fly ash in the mixtures improved the workability, freeze-thaw resistance, water absorption and capillary water absorption rate increased with the increase of the fly ash content. The results obtained in terms of the methods used in the study; in the pressure, water absorption and capillary water absorption experiments, the addition method gave better results than the other methods, and according to the bending and cylinder splitting test results, the mixtures prepared with the partial substitution method were found to be higher than the other mixing methods.