Abstract

Welded galvanized steel wire mesh is fabricated from longitudinal and transverse steel wires welded at specific intervals, followed by hot-dip galvanizing. To address the issue of asphalt pavement cracking, this study incorporates the welded galvanized wire mesh between the base and surface layers, thereby reducing the stress-strain levels of the pavement structure and mitigating the stress concentration at cracks. This results in a novel reinforced asphalt pavement structure. To validate the road performance of asphalt mixtures reinforced with welded galvanized steel wire mesh, this paper presents an indoor experimental study comparing various reinforcing materials: unreinforced, glass fiber geogrid, a polyester fiberglass geotextile, and 1.0 mm welded galvanized steel wire mesh. The results demonstrate that welded galvanized steel wire mesh significantly constrains asphalt mixture deformation under wheel loads, enhancing shear strength by 58.9 % compared to unreinforced asphalt mixtures, and exhibiting robust high-temperature deformation resistance. Moreover, the flexural tensile strength of asphalt mixtures reinforced with welded galvanized steel wire mesh increased by 36.3 %, and the maximum bending and tensile strains rose by 79.9 %, showcasing exceptional low-temperature crack resistance and crack propagation properties. Additionally, the fatigue life of the asphalt mixtures was markedly improved. Comprehensive analysis indicates that welded galvanized steel wire mesh is cost-effective, enhances the integrity and continuity of asphalt pavements, and extends their service life. Over the pavement's life-cycle, this method reduces overall investment, providing a robust basis for extensive application of welded galvanized steel wire mesh in asphalt highways.

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