Research on microwave heating performance of modified steel slag asphalt mixture

• Published in: Advances in mechanical engineering Vol. 13; no. 4
• Main Authors: Song, Yanfang, Wang, Zhe, Zhou, Yan, Hu, Rong
• Format: Journal Article
• Language: English
• Published: London, England SAGE Publications 01.04.2021; Sage Publications Ltd; SAGE Publishing
• Subjects: Asphalt; Asphalt mixes; Basalt; Heating; Microwave heating; Recovery; Repair; Slag; Tensile properties; Tensile strength; microwave heating; Modified steel slag asphalt mixture; bending strength
• ISSN: 1687-8132; 1687-8140
• DOI: 10.1177/1687814021990479

Aiming at the change law of the flexural and tensile strength of the modified steel slag asphalt mixture during microwave heating, the results of this paper are as follows: the microwave heating process can achieve the recovery of the flexural and tensile properties of the modified steel slag asphalt mixture. The number of point bending failure tests continues to increase, and the recovery rate of bending and tensile properties of beams made of modified steel slag asphalt mixture will slowly decrease until the test piece is completely destroyed. The flexural and tensile strength of beams made by microwave heating asphalt mixture cannot be fully recovered, but different asphalt mixtures have different recovery effects. Compared with the ordinary basalt asphalt mixture, the steel slag asphalt mixture before modification has the same bending and tensile repair effect after microwave heating, while the modified steel slag asphalt mixture has the first bending and tensile repair effect after microwave heating increased by 23%.