论文部分内容阅读
首先通过就地冷再生机WR2500S进行现场铣刨取样,然后进行室内废旧混合料配合比设计;根据击实试验,确定最大干密度以及最佳含水量;根据最佳含水量以及最大干密度成型试件后进行养护;然后测试试件无侧限抗压强度以及劈裂强度。试验结果表明:以水泥为添加剂的全深式就地冷再生无侧限抗压强度、劈裂强度均满足规范对高速公路基层的强度要求,随着水泥剂量的增加,冷再生混合料的无侧限抗压强度和劈裂强度也相应的增加;冷再生混合料铣刨筛分后其通过率满足规范要求且无侧限抗压强度符合水泥稳定类材料作为底基层及二级公路基层的要求后可不进行新骨料的添加。说明水泥稳定再生混合料具有较好的力学性能。
First of all, on-site cold-reclaiming machine WR2500S was used to carry out on-the-spot milling sampling, and then the interior mix ratio of waste mixture was designed. According to the compaction test, the maximum dry density and the optimum moisture content were determined. Based on the optimal moisture content and the maximum dry density forming test After curing, the specimens were then tested for unconfined compressive strength and splitting strength. The test results show that the unconfined compressive strength and splitting strength of all-in-situ cold regrowth with cement as additives all meet the requirements of the standard for the strength of the grassroots level of expressway. With the increase of cement dosage, The compressive strength and the splitting strength also increase correspondingly; the passing rate of the cold-reclaimed mixture after milling and screening meets the specifications and the unconfined compressive strength accords with the cement stabilized material as the base and secondary road base After the request without adding new aggregates. This shows that the cement stabilized recycled mixture has good mechanical properties.