新型高聚物固化剂稳定土路用性能试验研究
Experimental Study on Stabilization Performance of New Polymer Curing Agent for Soil Road
谢燕梅 1赵梦1
作者信息
- 1. 安徽建筑大学 土木工程学院,合肥 安徽 230601
- 折叠
摘要
为研究高分子聚合物固化剂对水泥石灰土强度和耐久性的影响,以醋酸乙烯酯-乙烯共聚乳液、纯丙乳液、硅丙乳液、聚乙二醇、纳米二氧化硅(n-SiO2)、木质素磺酸钙、十二烷基苯磺酸钠、KH-550 等为原料,制备了一种高分子聚物土壤固化剂V.通过 7d无侧限抗压强度试验确定固化剂与水泥、石灰的最适宜配比,并对固化剂稳定土进行水稳定试验、冻融试验、劈裂试验,分析稳定土路用性能.结果表明:当固化剂掺量为 0.1%,水泥掺量为 5%,石灰掺量为 3%时,试件7d无侧限抗压强度最高,为5.46 MPa.养护28d后,试件水稳定系数、抗冻指标和劈裂强度分别为89.66%、83.7%、0.77 MPa.通过数据对比可知,固化剂对水泥石灰土各性能有明显提升.
Abstract
In order to study the effect of high polymer curing agent on the strength and durability of cement lime soil,a high molecular polymer soil curing agent V is prepared with vinyl acetate-ethylene copolymer emulsion,pure acrylic emulsion,silicone acrylic emulsion,polyethylene glycol,nano-silicon dioxide(n-SiO2),calcium lig-nosulphonate,sodium dodecyl benzene sulfonate,KH-550,etc.as raw materials.The optimal ratio of curing agent to cement and lime is determined through a 7-day unconfined compressive strength test.The curing agent stabi-lized soil is subjected to water stability tests,freeze-thaw tests,and splitting tests to analyze its road performance.The results show that when the dosage of curing agent is 0.1%,cement is 5%,and lime is 3%,the unconfined compressive strength of the specimen is the highest at 5.46 MPa after 7 days.After 28 days of curing,the water stability coefficient,frost resistance index,and splitting strength of the specimens are 89.66%,83.7%,and 0.77 MPa respectively.Through data comparison,it can be seen that the solidification agent has significantly im-proved the various properties of cement lime stabilized soil.
关键词
高聚物固化剂/配合比/无侧限抗压强度/抗冻性Key words
high polymer curing agent/mix ratio/no limit compressive strength/freezing resistance引用本文复制引用
基金项目
安徽省高校省级自然科学研究项目-重大项目(2022AH040045)
出版年
2024
NETL
NSTL
万方数据