The article describes the use of recycled rubber raw materials for the preparation of a suspension. The use of the resulting suspensions as a binder for asphalt concrete and concrete waterproofing.

Keywords: suspension, rubber crumb, oil pitch, fuel oil, bitumen, microwave energy

It has been shown that waterproofing mastics (WM) should have increased indicators of water, wear and heat resistance, adhesion to surfaces, environmental friendliness, durability, etc. The relevance of reducing the prime cost of WM with the simultaneous improvement of their properties, due to the introduction of mineral fillers of natural and technogenic origin, as well as wastes of various industries, in polymer- bitumen compositions . The possibilities of introducing secondary products of the petrochemical and rubber technical industry into the composition of the WM, as well as the possibility of using asbestos, kaolin, montmorillonite, karelite and other fillers are generalized. It has been experimentally proved that the use of polymeric plasticizing and rubber wastes, as well as mineral components in the composition of WM, made it possible to obtain a composition having advantages in strength of adhesion and conventional strength up to 3 times, in water absorption up to 5 times, in relative elongation up to 7.5 times, in comparison with regulatory requirements.

Keywords: waterproofing mastic, roofing, polymer-bitumen binder, production waste, mineral filler, cost, strength, water absorption, heat resistance

Possible unfavorable changes in roofing bitumen mastics (RBM), such as shrinkage, cracking, aging, insufficient adhesion, etc., which occur under the influence of external factors, are summarized. The limitations of the chemical modification of RBM and the advantages of physical methods, in particular microwave effect, are shown. The possibilities of using microwave energy in the processes of extraction of the bitumen component, during its dehydration and activation, during the synthesis, drying and intensification of the reactions of obtaining modifiers and their combination in bitumen compositions are systematized. The prospects of using microwave in the activation processes of mineral fillers, as well as the application and repair of bituminous coatings, are revealed. It is shown that conformational and intermolecular changes under the influence of microwave can lead to an increase in water resistance, strength, combined with elasticity, thermal and frost resistance, and also the durability of RBM.

Keywords: roofing mastic, bitumen composition, filler, chemical modification, physical methods, microwave, drying, activation, interface, strength, water resistance, elasticity, adhesion