Investigation of the use of casting and mining industry waste in concrete instead of aggregate

Today, intensive work is being done on the reuse and recycling of waste and residual materials. In these studies, it is aimed to obtain new products from wastes or to use them as additives. Reuse or recycling of waste; By reducing the use of limited natural resources, it prevents the destruction of nature, increases efficiency in production and minimizes environmental problems that may arise as a result of waste storage. In order to consume less natural resources, reduce environmental pollution and reduce energy costs, the use of industrial waste in the composition of concrete is an issue that attracts more and more attention day by day. With this master's thesis, a new evaluation area for waste casting sand and waste vermiculite, which is an important environmental problem, can be researched, and it is aimed to reduce the destruction of natural resources that occur during the supply of these aggregates, since the use of aggregate used during concrete production will be reduced. For this purpose, studies were carried out to evaluate pure and waste casting sand and waste vermiculite in concrete, which is an important building material. These wastes are replaced with the aggregate in the concrete at the rates of 5%, 10% and 20%, and the workability of the concrete, Scanning electron microscope (SEM), FTIR (Fourier Transform Infrared) spectrophotometer, Thermogravimetric analysis (TGA), X-ray diffractometry (XRD) and pressure strength analyzes were carried out. At the end of the study, it was concluded that the workability of the concrete and the thermal properties of the concrete were improved in three admixture types, and the pure and waste casting sand additive positively affected the hydration of the concrete, according to the XRD analysis findings for the determination of the mineralogical structure.