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当前位置: 首页 > 文章 > 再生骨料道路水稳级配碎石基本性能 青岛农业大学学报(自然科学版) 2020 (1) 47-52
Position: Home > Articles > Basic Performance of Recycled Aggregate in Cement Stabilized Macadam Journal of Qingdao Agricultural University(Natural Science) 2020 (1) 47-52

再生骨料道路水稳级配碎石基本性能

作  者：
韩晓雪;张思雨;刘君实;全洪珠;秦薇
单  位：
青岛农业大学建筑工程学院;青岛北海岸建设投资有限公司;青岛三星工程有限公司
关键词：
再生骨料;级配碎石;水稳层;力学性能;抗冻性能
摘  要：
使用再生骨料替代天然骨料,制备5种不同配合比的水稳级配碎石,对再生骨料水稳层结构的力学性能和抗冻性能进行试验研究。选用0.075～31.5mm粒径的再生骨料,通过标准击实试验得出最大干密度和最佳含水量,初步确定配合比;通过无侧限抗压强度试验、劈裂强度试验、抗冻融循环试验等进一步进行配合比优化。试验结果表明,在掺和水泥剂量超过3.5%情况下,再生骨料水稳级配碎石的无侧限抗压强度大于3.5 MPa,劈裂强度满足0.4～0.6MPa且变异系数小于10%,10次冻融循环后强度损失率小于25%,满足技术规范要求,再生骨料可以替代天然骨料用于道路水稳层施工。
译  名：
Basic Performance of Recycled Aggregate in Cement Stabilized Macadam
作  者：
HAN Xiaoxue;ZHANG Siyu;LIU Junshi;QUAN Hongzhu;QIN Wei;Qingdao Sanxing Engineering Co.,Ltd;College of Architectural Engineering,Qingdao Agricultural University;Qingdao North Coast Construction Investment Co.,Ltd.;
关键词：
recycled aggregate;;graded macadam;;cement stabilized layer;;mechanical property;;frost resistance
摘  要：
In this paper,five kinds of cement stabilized macadam with different mix ratios were prepared by using recycled aggregate instead of natural aggregate.The mechanical properties and frost resistance of the cement stabilized layer structure of recycled aggregate were tested.The recycled aggregate with 0.075-31.5 mm particle size was selected,and the maximum dry density and the optimum moisture content were obtained through standard compaction test,and the mix proportion was preliminarily determined.Through unconfined compressive strength test,splitting strength test and freezing-thawing circulate test,the mix proportion was further optimized.The test results showed that the unconfined compressive strength of recycled aggregate cement stabilized macadam was greater than 3.5 MPa,the splitting strength met 0.4-0.6 MPa and the coefficient of variation was less than 10%,and the strength loss rate after 10 freeze-thaw cycles was less than 25%,which met the technical specifications.Recycled aggregate could replace natural aggregate in the construction of road cement stabilized layer.

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