Effects of Glass and Plastic Additives on the Physical, Mechanical and Strength Characteristics of Concrete

The aim of the work is to study the possibility of the influence of fiberglass additives on the physical, mechanical and strength characteristics of concrete. Concrete with the addition of cullet and plastic as a fine aggregate is considered as an object. In modern construction, research works aimed at studying high-tech concretes using recycled waste are of the greatest value. The practical significance of the study lies in obtaining concretes with improved characteristics using municipal waste, which will increase the efficiency of processing industrial waste and reduce their harmful impact on the environment. The analysis of the properties of concrete mixture and concrete using cullet and plastic as a filler is carried out. The analysis of the mechanism of influence of additives made of glass and plastic on the properties of concrete is carried out. Recommendations for the production of concrete using additives made of glass and PET-flex as a fine aggregate have been developed. An experimental plan was developed, the composition of the concrete mixture was selected and tested, natural sand was used as a fine aggregate for the manufacture of concrete, bituminous glass was crushed using a cylinder and a plunger on a hydraulic press to a fine fraction as a cullet. Based on the experimental data obtained, graphs of the dependence of the strength of concrete on the amount of PET-flex filler, the dependence of the strength of concrete on the amount of cullet were constructed. The analysis of experimental data with determination of the greatest ultimate strength of concrete is carried out. It was found that glass and plastic waste can be used as additives to concrete, since the strength of these concretes is comparable to the strength of conventional concrete.