Comparison of Polyethylene Terephthalate and Fly Ash as an additive in Concrete

The problem of searching for ecological and economic additives exists in various parts of the world. Visualizing the need for this problem, it is necessary to opt for various alternatives in buildings that help us promote the comparison of two additives, which are polyethylene terephthalate and fly ash., as a replacement option without altering its composition in a negative way, defining the points that could serve as a reduction in costs, improvement of the properties of the concrete and in this way, showing its favorable results by comparing them for the use of these same adding to the concrete giving a viable option in both works and construction, also taking care of the environment. In section I, a summary of the various scientific articles is made demonstrating the viability of these additives in concrete from the point of view of the authors cited later. Section II details the filters used to select the articles. Section III details the different results obtained from the information collected, showing several tests carried out by the authors and the times they took for each test.