黄泛区改性粉土温缩性能对比试验研究  

Comparative Test Research on Temperature Shrinkage Performance of Modified Soil in Yellow River Flood Field

作　　者：王喆 张磊 王伟 孙兆云 向国伟 户桂灵[4] Wang Zhe;Zhang Lei;Wang Wei;Sun Zhaoyun;Xiang Guowei;Hu Guiling(Shandong Hi-speed Company Limited,Jinan 250014,Shandong,China;Shandong Transportation Research Institute,Jinan 250102,Shandong,China;Shandong High Speed Engineering Consultants Company Limited,Jinan 250014,Shandong,China;Shandong Jianzhu University,Jinan 250102,Shandong,China)

机构地区：[1]山东高速股份有限公司,山东济南250014 [2]山东省交通科学研究院,山东济南250102 [3]山东高速工程咨询有限公司,山东济南250014 [4]山东建筑大学,山东济南250102

出　　处：《岩土工程技术》2022年第2期169-172,共4页Geotechnical Engineering Technique

基　　金：山东省交通运输厅科技计划(2018B44)。

摘　　要：山东黄泛区属于季节性冻土区,昼夜温差较大时易产生开裂,进而影响路面的完整性和连续性。黄泛区粉土本身颗粒级配较差,强度较低,需要通过改性处理。通过对三种类型粉土的温缩性能比较,表明水泥和沥青粉对粉土的温缩开裂有抑制作用,温缩系数呈以下大小顺序排列:沥青粉改性土<水泥改性土<素土。Yellow River flood field of Shandong Province is a seasonally frozen soil area, and it is easy to crack when the temperature difference between day and night is large, which affects the integrity and continuity of the road surface. The soil in the yellow river flood field has poor particle gradation and low strength, which needs to be modified. In this study, the temperature shrinkage properties of three types of soil were compared, and results showed that cement and asphalt powder had an inhibitory effect on the temperature shrinkage and cracking of soil. Moreover, the temperature shrinkage coefficients were arranged in the following order: asphalt powder modified soil <cement modified soil < plain soil.

关 键 词：粉土 沥青粉 温缩试验 粉土固化 温缩系数 

分 类 号：U416[交通运输工程—道路与铁道工程]