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首页> 外文期刊>Transportation Research Record >Experience with Cold In-Place Recycling as a Reflective Crack Control Technique; Twenty Years Later
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Experience with Cold In-Place Recycling as a Reflective Crack Control Technique; Twenty Years Later

机译：具有就地冷再生作为反射裂缝控制技术的经验；二十年后

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Cold in-place recycling (CIR) of existing hot-mix asphalt materials has been an available treatment for more than 20 years. A study evaluated the performance of CIR projects and materials over that period. Contractors in northwestern Pennsylvania have constructed a total of 44 pavement sections. Ninety additional sections have been recycled as part of maintenance activities. (The latter are not included among the study sections.) A subset of these projects has been evaluated to determine performance characteristics and cost-effectiveness of the treatment and the material. The treatment is used typically on rehabilitation projects of roadways with 8,000 average daily traffic (ADT) or less but has been used on projects with up to 13,000 ADT. The performance of CIR in resisting reflective cracking from underlying concrete pavements and material properties over time is discussed. Material layer stiffness was evaluated using backcalculation of deflection measurement methods. Additionally, the cost of constructing these rehabilitation projects and their average cost-effectiveness are discussed.
机译：现有的热拌沥青材料的就地冷再生（CIR）已有20多年的历史了。一项研究评估了该期间CIR项目和材料的绩效。宾夕法尼亚州西北部的承包商共建造了44条人行道。作为维护活动的一部分，回收了另外九十个部分。 （后者未包括在研究部分中。）已对这些项目的一个子集进行了评估，以确定处理和材料的性能特征以及成本效益。这种处理通常用于平均每日交通量（ADT）小于或等于8,000的道路修复项目，但已用于高达13,000 ADT的项目。讨论了CIR在抵抗混凝土路面反射裂缝和材料特性随时间变化方面的性能。使用挠度测量方法的反算来评估材料层的刚度。此外，还讨论了建设这些修复项目的成本及其平均成本效益。

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