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首页> 外文期刊>Journal of Solid Waste Technology and Management >EVALUATION OF THE EFFECT OF COARSE AND FINE RUBBER PARTICLES ON LABORATORY RUTTING PERFORMANCE OF ASPHALT CONCRETE MIXTURES
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EVALUATION OF THE EFFECT OF COARSE AND FINE RUBBER PARTICLES ON LABORATORY RUTTING PERFORMANCE OF ASPHALT CONCRETE MIXTURES

机译：粗细橡胶颗粒对沥青混凝土混合料实验室车辙性能的影响评估

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摘要

The nation faces ecological problems due to the accumulation of waste automobile and truck tires. In this study, the effect coarse ground tire rubber (GTR) and crumb rubber on rutting performance of Superpave asphalt concrete mixtures as measured in the laboratory were evaluated. A percentage of the locally available coarse rubber, uniformly graded is used as a substitution for aggregate particles, at nine levels of rubber percentages, 0%, to 4.0 % at 0.5%, increments, while maintaining the well-graded Superpave gradation. In addition to coarse rubber, fine crumb rubber particles (minus No 80 and No. 20 mesh) in proportions of 5% and 15%, were evaluated using the compaction characteristics of the Superpave Gyratory Compactor to determine the optimum percentage of coarse and fine rubber particles that can be used in the asphalt concrete mixture. The coarse rubber particles exhibit increased rutting resistance as percentage of rubber increased up to 3.5 %. On the other hand, crumb rubber dissolved in the binder and stiffened to increase its rutting resistance. Even though only up to 2.5% coarse rubber particles could be were used as compared to 15 % of crumb rubber, the processing cost of coarse of rubber is much less than crumb rubber to make it cost effective.
机译：由于废旧汽车轮胎和卡车轮胎的积累，该国面临着生态问题。在这项研究中，评估了粗磨轮胎橡胶（GTR）和碎橡胶对实验室中Superpave沥青混凝土混合物的车辙性能的影响。百分比均匀分布的局部粗橡胶被用作骨料颗粒的替代品，以橡胶百分比的九个水平（从0％到4.0％，以0.5％）递增，同时保持了良好分级的Superpave渐变。除粗橡胶外，还使用Superpave旋转压实机的压实特性对比例为5％和15％的细碎橡胶颗粒（负号80和20号目）进行了评估，以确定粗橡胶和细橡胶的最佳百分比可用于沥青混凝土混合物中的颗粒。粗橡胶颗粒显示出更高的耐车辙性，因为橡胶的百分比增加到3.5％。另一方面，碎屑橡胶溶解在粘合剂中并变硬以增加其抗车辙性。尽管只能使用最多2.5％的粗橡胶颗粒（相比之下，面包屑橡胶的含量为15％），但橡胶粗颗粒的加工成本却远低于面包屑橡胶，从而使其具有成本效益。

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