Study of the Physical and Chemical Properties of Bricks Made from Plastic Waste and Flint

The aim of this article is to determine the physical and chemical properties of composite bricks based on waste plastics and flint, in order to predict the durability of these materials. The methodology adopted consists in using flint mine tailings as reinforcement, mixed with four types of plastic: PET, HDPE, PP and LDPE, each blended in proportions ranging from 10 to 50% in steps of 10, to determine which of the four materials offers the best performance. Once the bricks had been made, laboratory tests were carried out on density, water absorption and fire resistance. The results obtained were satisfactory in terms of durability. The various results obtained were also compared with the requirements of standards for masonry, road surfaces (pavers) and flooring materials. The results show that the materials can be used in the building and civil engineering sector as bricks, utility poles, road kerbs and floor slabs. Keywords: Composite bricks, plastic waste, Flint, durability.