Fabrication and heat conduction performance investigation of a heat insulation conductive bonding layer for asphalt pavements. (30th August 2020)

• Record Type: Journal Article
• Authors: Wang, Chaohui; Liu, Luqing; Yuan, Huazhi; Luo, Sang; Han, Xiaoxia
• Is Part Of: Construction & building materials. Volume 253(2020)
• Publication Date: 2020-08-30
• Subjects: Road engineering -- Conductive bonding layer -- Heat conduction effect -- Heat insulation effect -- Temperature change; Building materials -- Periodicals; 624.18
• DOI: 10.1016/j.conbuildmat.2020.119191
• Languages: English
• ISSNs: 0950-0618

Abstract

Highlights: The pavement conductive bonding layers with heat insulation effects. The design of novel snow-melt pavement structure. The heating effect of the upper part and the cooling effect of the lower part of conductive bonding layer. The preferred material composition of conductive bonding layer. Abstract: To improve the efficiency of deicing and snow melting on road surfaces, three types of pavement conductive bonding layers with heat insulation effects were prepared, and the conductive bonding layer snowmelt pavement structure with heat insulation effect was designed. The temperature increasing effect of the upper part and the cooling effect of the lower part of the insulating conductive bonding layer were studied under different electrifying times. The effects of different material compositions on the heat insulating effect of the conductive bonding layer for the road were analyzed, and the best heat insulating and conductive bonding layer was selected. Results indicate that the comprehensive performance of the modified waterborne epoxy resin conductive bonding layer is the best. Compared with the two other types of conductive bonding layers, the temperature increasing effect of the upper part of the modified waterborne epoxy resin conductive bonding layer is 21.11–127.78% higher, and the cooling effect of the lower part is 19.78–93.62% higher. The addition of a heat insulation filler effectively improves the effect of the heat insulation conductive bonding layer, and with the increase in carbon fiber spreading amount, the performance improvement range of the road heat insulating conductive bonding layer increases gradually. The use of 80 g/m 2 of modified waterborne epoxy resin/hollow glass bead as the conductive bonding layer is recommended.