Study on Improvement Technology for Subgrade Filling of Silty Loess in Inner Mongolia

2nd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Lei, Zhijian^1 ; Zhang, Faru^2 ; Zhang, Heng^2

Hohhot Highway Engineering Supervision Institute, Hohhot

010020, China^1

CCCC First Highway Consultants Co. Ltd., Xi'an, Shaanxi

710075, China^2

关键词: California bearing ratio;    Critical water content;    Empirical studies;    Inorganic binders;    Maximum dry density;    Optimum water content;    Particle composition;    Subgrade fillings;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/170/2/022069/pdf
DOI  :  10.1088/1755-1315/170/2/022069

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

This study focused on the issue of deficient quality of large distributed salty loess between Ranching to Wuhan Expressway in Inner Mongolia, with a total distance of 60.2km. The empirical study adopted five indices to examine the quality of salty loess, including critical water content, particle composition, maximum dry density and optimum water content, California Bearing Ratio (CBR), and resilient modulus respectively. The test results proved that the indices such as CBR and resilient modulus of the loess with silt content up to 80% can meet the needs of the standard through the improvement of inorganic binder. This new approach can expand the usability of salty loess. Additionally, this study proposed some suggestions about how to use improved salty loess in roadbed via the method of layered construction with the aim of ensuring quality of constructions.