湖南工业大学学报2026，Vol.40Issue(3)：10-16,7.DOI:10.20271/j.cnki.1673-9833.2026.3013
液体石蜡改性水泥土的冻融性能与机理分析
Analysis of the Mechanical Properties of Liquid Paraffin-Cemented Soil Under Freeze-Thaw Cycles
摘要
Abstract
To alleviate the degradation of the mechanical properties of cement-soil brought about by freeze-thaw cycles,a solution involving the addition of liquid paraffin has thus been proposed by utilizing the energy conversion characteristics of phase change materials.Firstly,based on the results of unconfined compressive strength tests,it is found that the compressive strength of cement soil reaches the highest point with a mass fraction of 3%liquid paraffin added,which is about 7%higher than that of plain cement-soil.Subsequently,freeze-thaw cycling tests reveal that under the same number of cycles,the appearance of liquid paraffin cement soil deteriorates slower than that of plain cement soil,with a less loss of quality and strength,yet a relatively higher unconfined compressive strength.Finally,a comparison and analysis are made of the micro-structure of cement soil and liquid paraffin through scanning electron microscopy experiments,revealing the damage mechanism of water soil under freeze-thaw cycles as well as the improvement mechanism of liquid paraffin on cement soil.The research results show that the addition of liquid paraffin helps to significantly improve the freeze-thaw degradation of cement soil,with the strength loss of liquid paraffin cement soil 8.56%less than that of plain cement soil after freeze-thaw cycles,which verifies the remarkable improvement effect of the liquid paraffin.关键词
水泥土/冻融循环/抗压强度/液体石蜡/扫描电镜Key words
cement-soil/freeze-thaw cycle/compressive strength/liquid paraffin/scanning electron microscopy分类
交通工程引用本文复制引用
韦璐,胡俊杰,黄坤,胡学奥..液体石蜡改性水泥土的冻融性能与机理分析[J].湖南工业大学学报,2026,40(3):10-16,7.基金项目
国家自然科学青年基金资助项目(42402272) （42402272）
安徽省科研编制计划基金资助项目(2023AH050177) （2023AH050177）
安徽省住房与城乡建设科学技术计划基金资助项目(2023-YF036) （2023-YF036）
