Concrete is a mixture of cement, water, sand and brokenstones (jelly) in a definite proportion, which is a workable mass initially andhardens over a period of time (Puttaswamy, 2012).
Concrete mixtures are made upof sand, cement, and aggregates such as gravel, which are mainly used in constructionindustry, especially for housing and other commercial buildings. One researcheremphasized that the low-strength mixture has strength of 15 Mpa or about 2000psi and it is suitable for house foundations that are not reinforced, and forwalls (SANS, 2017). The concrete with plastics as aggregates is expected tobecome lighter, yet less expensive and the quality is marginally like the commercializedconcrete. Since the concrete is cheaper, it may help construction workers ontheir budget, but still, with effective outcome. By using lightweight concretes,the infrastructure construction workers build can become innovative with theuse of recycled materials and at the same time, helps the environment inreducing wastes.