Modification of components of roofing bitumen mastics with microwave energy
Abstract
Modification of components of roofing bitumen mastics with microwave energy
Incoming article date: 17.09.2018Possible 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