Utilization of Thermal-Activated Coal Gangue to Enhance the Properties of Sandy Soil Composites
Source abstract
Abstract
To effectively solve the problem of land sanding and improve the water- and element-retaining properties of sandy soil, a thermal-activated coal gangue (TACG) was used as an ameliorating material to prepare a composite soil mixed with sandy soil to enhance the water-retaining and fertilizer-fixing properties of the sandy soil and reduce the evaporation of water in the soil. The structure and thermal stability of the gangue were characterized using Fourier transform infrared spectroscopy and thermogravimetric analysis. By applying different dosages and different calcination temperatures of the TACG, the water-holding capacity of the mixed soil was determined, and changes in pore structure were observed. When the dosage was 15% and the calcination temperature was 600 °C, the mixed soil possessed the most excellent distribution of pore structure and could effectively prevent water evaporation. Meanwhile, the application of the TACG in sandy soil improved its adsorption of K+, which showed the potential application of thermally activated gangue materials in the field of soil improvement.
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Research context
OpenAlex topics: Geotechnical Engineering and Soil Stabilization · Grouting, Rheology, and Soil Mechanics · Landfill Environmental Impact Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Weibei Land Engineering Co., Ltd., Shaanxi Land Construction Group Co., Ltd., Xi’an 712039, China
Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi’an 710075, China
Technology Innovation Center for Land Engineering and Human Settlements, Shaanxi Land Engineering Construction Group Co., Ltd., School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Funding
Key Research and Development Program of Shaanxi · Shaanxi Provincial State-owned Capital Management Budget for Special Project of Science and Technology Innovation · Technology Innovation Center for Land Engineering and Human Settlements by Shaanxi Land Engineering Construction Group Co., Ltd. and Xi’an Jiaotong University
References (28)
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