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首页> 外文期刊>Advances in civil engineering >Investigation of the Effect of Recycled Asphalt Pavement Material on Permeability and Bearing Capacity in the Base Layer
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Investigation of the Effect of Recycled Asphalt Pavement Material on Permeability and Bearing Capacity in the Base Layer

机译：再生沥青路面材料对基层渗透率和承载力的影响研究

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摘要

The purpose of this research was to investigate the effects of recycled asphalt pavement (RAP) and cement content on the permeability and bearing capacity characteristics of aggregate base courses. Mixtures containing untreated RAP ranging between 0 and 100 percent and 1, 2, and 3% cement-treated RAP were subjected to laboratory tests (bitumen content, sieve analysis, modified proctor, soaked California bearing ratio (CBR), and constant-level permeability tests). The results showed that, as the RAP percentage in the mixture increased, CBR values decreased considerably. Moreover, there is a linear increase in the CBR values with cement treatment. Optimum moisture contents (OMC) and maximum dry densities (MDD) showed a decreasing trend. Increasing the cement percentages in 100% RAP blend increases the OMC and MDD values. The permeability of RAP showed a decrease as the percentage of RAP and cement increased in blends. The study showed that the CBR value of the 20% RAP blend is also obtained in the 100% RAP/3% cement-treated blend. Thus, it has been understood that cement is a suitable material in order to increase the use of RAP. In addition, the increase in the percentage of RAP and cement made the base course more impermeable.
机译：这项研究的目的是研究再生沥青路面（RAP）和水泥含量对骨料基层渗透性和承载力特性的影响。含有未经处理的RAP的混合物的含量介于0％到100％以及经水泥处理的RAP的范围为1％，2％和3％测试）。结果表明，随着混合物中RAP百分比的增加，CBR值显着下降。此外，随着水泥处理，CBR值呈线性增加。最佳水分含量（OMC）和最大干密度（MDD）呈下降趋势。增加100％RAP共混物中水泥的百分比会增加OMC和MDD值。随着共混物中RAP和水泥含量的增加，RAP的渗透性下降。研究表明，在100％RAP / 3％水泥处理的共混物中，也可获得20％RAP共混物的CBR值。因此，已经理解水泥是适合的材料，以增加RAP的使用。另外，RAP和水泥的百分比的增加使得基础层更不可渗透。

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