Author:
Huang Wei,Lai Haoqiang,Du Jiaxin,Zhou Cuiying,Liu Zhen,Ni Qian
Abstract
Abstract
Background
Ecological protection of slope surfaces by vegetation is one of the effective methods to reduce soil erosion. However, the surface soil of slope often has the problems of poor structure and low water use efficiency, which is not conducive to plant growth. Super absorbent resin (SAR) as a new type of water retention agent can effectively improve the surface soil of slopes. The study was designed to evaluate the effect and mechanism of SAR on aggregate stability, soil water characteristics and mechanical strength by analyzing the aggregate characteristics, moisture characteristics, microstructure and mechanical properties of SAR-treated soil.
Results
The results show that (1) the volume expansion and shrinkage in the process of water absorption and release of SAR loosened the soil, which improved the microstructure of the soil and increased the aggregate content, while the change of soil pore distribution significantly affected the soil–water characteristics; (2) the fractal dimension and stability of aggregates, the cohesion and internal friction angle of soils all tend to decrease with increasing SAR; and (3) the strong water absorption and retention of SAR increases the water holding capacity of the soil, thus increasing the water availability.
Conclusions
The above research is conducive to further revealing the good role of SAR in improving the surface soil of slope, promoting plant growth and improving the environmental protection effect. It can provide experimental and data support for the application of polymer water retaining agents.
Graphical Abstract
Funder
Major Programs Special Funds of Applied Science and Technology Research and Development of Guangdong Province
The National Key Research and Development Project of China
Publisher
Springer Science and Business Media LLC
Subject
Agronomy and Crop Science,Biochemistry,Food Science,Biotechnology
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献