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首页> 外文会议>Fourth European Symposium on Performance of Bituminous and Hydraulic Materials in Pavements, Apr 11-12, 2002, Nottingham, United Kingdom >Laboratory evaluation of road bases made of cement by-pass dust stabilized aggregate systems
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Laboratory evaluation of road bases made of cement by-pass dust stabilized aggregate systems

机译：水泥旁路粉尘稳定集料系统制成的路基的实验室评估

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摘要

Road rehabilitation and reconstruction generate large supplies of reclaimed asphalt pavement (RAP) aggregate. Recycling into asphalt paving mixtures is the predominant application. Cement by-pass dust (CBPD) or cement kiln dust (CKD) is a by-product material generated during the production of Portland Cement. This study investigated the potential use of CBPD-stabilized RAP and RAP/virgin aggregate mixtures in road bases. Compaction and unconfined compressive strength tests were conducted on RAP/virgin aggregate blends with different percentages. Specimens were cured for 3, 7 and 28 days. A CBPD content of 15% seems to be the optimum for achieving maximum strength. The optimum moisture contents for those blends stabilized using up to 7% CBPD are higher than those stabilized using 10―20% CBPD. Pavement design undertaken for the different combinations of CBPD-stabilized RAP/virgin aggregate indicated that with the increase of CBPD or virgin aggregate contents, a lower base thickness is required.
机译：道路修复和重建产生大量的再生沥青路面（RAP）骨料。回收成为沥青铺路混合物是主要应用。水泥旁路粉尘（CBPD）或水泥窑粉尘（CKD）是波特兰水泥生产过程中产生的副产品。这项研究调查了路基中CBPD稳定的RAP和RAP /纯骨料混合物的潜在用途。对具有不同百分比的RAP /原始骨料混合物进行压实和无侧限抗压强度测试。样品固化3、7和28天。 15％的CBPD含量似乎是实现最大强度的最佳方法。使用最高7％CBPD稳定的掺混料的最佳水分含量高于使用10〜20％CBPD稳定的掺混料。对CBPD稳定的RAP /原始骨料的不同组合进行的路面设计表明，随着CBPD或原始骨料含量的增加，需要的底厚度要低一些。

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