摘要
化工厂在用氯醇法生产环氧丙烷时的皂化反应时会产生大量固体废弃物——皂化渣。为解决其长期堆积造成的环境污染问题,考虑将其用作道路基层材料,分析其路用的可行性。将其按照20%、25%、35%掺入土体拌和形成稳定土,确定配合比。掺量25%的试件7 d和28 d无侧限抗压强度达1.49 MPa和2.12 MPa;养生7 d时3次和5次干湿循环后抗压强度分别增长60.40%和110.74%;养生28 d时,冻融5次后抗压强度损失6.79%;经90 d养生后抗弯拉强度达0.72 MPa。试验结果表明掺入皂化渣形成的稳定土可用于低级公路的基层及高级公路底基层填筑。
The chemical plant produces a large amount of solid waste -saponated residue in the process of producing propylene oxide by using chlorohydrins process. In order to solve the environmental pollution caused by long-term accumulation, it can be used as road base material was considered and analyzed the feasibility of its road use. In accordance with the 20% , 25% , 35% saponification slag mixed into the soil formed stabilized soil with saponification slag, the mix ratio was determined. The admixture of 25% specimens of 7 d and 28 d unconfined compressive strength is 1. 49 MPa and 2. 12 MPa; 7 d health 3 times and 5 times of dry-wet cycle compressive strength increased 60. 40% and 110. 74% ; when the curing time is about 28 d , the freeze-thaw strength loss is 6. 79% after 5 times; after curing 90 d,flexural strength reached 0. 72 MPa. The test results show that the stabilized soil mixed with the saponated residue can be used in the construction of the base of low-grade highway and sub-base of high- grade highway.
出处
《科学技术与工程》
北大核心
2017年第12期273-278,共6页
Science Technology and Engineering
关键词
皂化渣
抗压强度
道路基层
路用性能
saponated residue compressive strength road base pavement performance
