STUDY OF PROPERTIES OF CONCRETE REINFORCED WITH PARTICLES OF RECYCLED COMPOSITE MATERIALS

OWRASP

Abstract

In the modern world, the use of polymers, including composite materials, has become an integral part of many industries. However, with the growth of polymer consumption, serious environmental problems arise associated with their processing and disposal. When processing composite materials, the secondary use of these materials and their application in various industries, such as construction, is promising. In this paper, studies were conducted on the influence of crushed composite materials and their components as a filler on the physical and mecha­nical properties of concrete. At the first stage of the study, the optimal size of the fraction of reinforcing particles for filling concrete samples was selected. It was shown that the best physical and mechanical characteristics were observed when using fine particles, due to the poor adhesion of coarse particles with the cement matrix. After determi­ning the size of the reinforcing particles, concrete samples of cubic shape with dimensions of 30/30/30 mm with different degrees of filling were manufactured in accordance with GOST. Then, tests of reinforced and standard concrete samples for compression were carried out. As a result of the tests, it was revealed that the compressive strength of concrete samples reinforced with particles of crushed fiberglass (1 %) and particles of crushed ED-20 binder (10 %) increased by 2,6 times, and the modulus of elasticity by 3-4 times.On this basis, it can be noted that the use of additives from crushed composite materials as a filler for concrete compositions is promising and allows not only to recycle these materials, but also to improve the physical and mechanical properties of concrete with their help.