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首页> 外文期刊>Journal of Civil Engineering and Management >COMPACTION ASSESSMENT OF RECYCLED AGGREGATES FOR USE IN UNBOUND SUBBASE APPLICATION
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COMPACTION ASSESSMENT OF RECYCLED AGGREGATES FOR USE IN UNBOUND SUBBASE APPLICATION

机译：用于无底层底基应用中的回收骨料的紧实度评估

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Study was recently conducted at Kingston University to assess the suitability of using recycled concrete aggregate (RCA) and reclaimed asphalt pavement (RAP) in unbound subbase mixtures. The results showed that the use of 100％ recycled aggregates increased the optimum moisture content and decreased the maximum dry density of the sub-base materials in comparison with natural aggregates. Moreover, the replacement of RCA by reclaimed asphalt pavement by 50％ decreased the optimum moisture content and increased the maximum dry density in proportion to 100％ RCA. The effects of physical properties on 0％ air void and compaction curve were discussed for each type of subbase. The CBR values of the subbase materials prepared with 100％RCA is lower than subbase mixture with 100％ natural aggregates. The CBR further decreased for replaced subbase with RAP so that 50％RCA+50％RAP is not suitable for unbound subbase from the point of CBR view. In each mix the trend of CBR value was investigated in terms of water content. This research found some significant practical points to use in site works.
机译：金士顿大学最近进行了一项研究，以评估在未粘结的基层混合物中使用再生混凝土骨料（RCA）和再生沥青路面（RAP）的适用性。结果表明，与天然骨料相比，使用100％再生骨料增加了最佳含水量，降低了基料的最大干密度。此外，用再生沥青路面代替RCA的50％降低了最佳含水量，并以100％RCA的比例增加了最大干密度。讨论了每种底基的物理性质对0％气隙和压实曲线的影响。用100％RCA制备的基层材料的CBR值低于使用100％天然骨料的基层混合物的CBR值。从CBR的角度来看，用RAP代替的底基的CBR进一步降低，因此50％RCA + 50％RAP不适合未结合的底基。在每种混合物中，都根据含水量研究了CBR值的趋势。这项研究发现了一些可在现场工作中使用的重要实用点。

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