New Approach to Recycling Asphalt Shingles in Hot-Mix Asphalt
New Approach to Recycling Asphalt Shingles in Hot-Mix Asphalt
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热拌沥青中沥青瓦回收的新方法
DOI：
10.1061/(asce)mt.1943-5533.0000520
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发表时间：
2012
影响因子：
3.2
通讯作者：
S. Dessouky
中科院分区：
文献类型：
--
作者：
M. Elseifi;Saman Salari;L. Mohammad;Marwa M. Hassan;W. Daly;S. Dessouky
摘要本研究的目的是介绍一种新的方法来回收沥青瓦在沥青路面施工中，再生沥青瓦（RAS）粉碎到超细颗粒尺寸和沥青结合料混合通过湿法工艺。在建议的湿法工艺中，在与骨料混合之前，将研磨的回收材料与粘合剂在高温下混合。将分类为PG 64-22和PG 52-28的两种未改性的粘合剂与两种对比的RAS源以粘合剂的10- 40重量%的改性含量共混。在实验室中，通过提议的湿法工艺使用RAS改性是成功的。基于实验程序的结果，通过所提出的湿法工艺使用RAS改性通常会改善或不影响粘结剂的高温等级，但它可能会降低粘结剂的低温等级。正如在这项研究中所证明的，最佳的瓦片含量可以确定…
AbstractThe objective of this study is to introduce a new approach to recycling asphalt shingles in asphalt paving construction in which recycled asphalt shingles (RAS) are ground to ultrafine particle sizes and blended with asphalt binder through a wet process. In the proposed wet process, the ground recycled material is blended with the binder at a high temperature prior to mixing with the aggregates. Two unmodified binders that are classified as PG 64-22 and PG 52-28 were blended with two contrasting sources of RAS at a modification content ranging from 10–40% by weight of the binder. The use of RAS modification through the proposed wet process was successful in the laboratory. Based on the results of the experimental program, the use of RAS modification through the proposed wet process would generally improve or not influence the high temperature grade of the binder, but it may reduce the low temperature grade of the binder. As demonstrated in this study, an optimum shingle content may be identified t...