钢渣及钢纤维对沥青混合料微波加热与路用性能影响研究

doi:10.6040/j.issn.1672-3961.0.2024.078

摘要/Abstract

摘要： 针对诱导性材料对沥青混合料微波加热性能影响规律不清的问题,设计制备不同钢纤维质量分数的钢渣沥青混合料、玄武岩沥青混合料、粗钢中玄沥青混合料及粗玄中钢沥青混合料,通过微波加热试验研究钢渣及钢纤维对沥青混合料升温速率及升温均匀性的影响规律,采用车辙试验、低温弯曲试验、浸水马歇尔试验、体积安定性试验与四点弯曲疲劳试验评价钢渣沥青混合料的路用性能。结果表明:钢渣显著提高了沥青混合料的微波加热升温效率,但降低了升温均匀性;钢纤维对沥青混合料微波加热升温效率影响不明显,随着钢纤维质量分数的增加升温均匀性呈现先改善后劣化的规律;钢渣的掺入能够提升沥青混合料的高低温性能与疲劳性能,但对混合料的体积安定性与水稳定性产生不利影响。本研究初步证实了钢渣用作诱导加热自愈合沥青路面集料的可行性,具有较好的应用前景。

关键词: 钢渣, 沥青混合料, 钢纤维, 微波加热, 升温均匀性, 耐久性

Abstract: In response to the problem of unclear patterns of the influence of induced materials on the microwave heating performance of asphalt mixtures, coarse basalt and middle basalt asphalt mixture, coarse steel slag and middle steel slag asphalt mixture, coarse basalt and middle steel slag asphalt mixture, and coarse steel slag and middle basalt asphalt mixture with different dosages of steel fibers had been designed and prepared. The influence of steel slag and steel fiber on the heating rate and uniformity of asphalt mixture was studied by microwave heating test. In addition, rutting test, low-temperature bending test, water-soaked Marshall test, volumetric stability test and four-point bending fatigue test were used to evaluate the pavement performance of steel slag asphalt mixtures. The results found that steel slag significantly improved the microwave heating efficiency of asphalt mixtures, but reduced the heating uniformity. The effect of steel fiber on the microwave heating efficiency of asphalt mixtures was not obvious, and the heating uniformity showed the phenomenon of first improvement and then deterioration with the increase of steel fiber dosage. The incorporation of steel slag could improve the high and low temperature performance as well as fatigue resistance of asphalt mixtures, but it adversely affected the volume stability and water stability of the mixtures. This study preliminarily confirmed the feasibility of steel slag used as induced-heating self-healing asphalt pavement aggregate, showing promising application potential.

Key words: steel slag, asphalt mixture, steel fiber, microwave heating, warming uniformity, durability

中图分类号:

U414

胡瑶瑶,张圣涛,肖玉帅,宋士茂,张吉哲. 钢渣及钢纤维对沥青混合料微波加热与路用性能影响研究[J]. 山东大学学报 (工学版), 2025, 55(5): 154-164.

HU Yaoyao, ZHANG Shengtao, XIAO Yushuai, SONG Shimao, ZHANG Jizhe. Study on the effect of steel slag and steel fiber on microwave heating and pavement performance of asphalt mixture[J]. Journal of Shandong University(Engineering Science), 2025, 55(5): 154-164.

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