Enhancement of soil ecological self-repair using a polymer composite material

Huang, Wei; Liu, Zhen; Zhou, Cuiying; Xu, Yang

doi:10.1016/j.catena.2019.104443

Cited by 37 publications

(29 citation statements)

References 15 publications

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“… Note : (Source: Geological Survey Report of Wengyuan to Xinfeng Expressway in Shaoguan, China Railway Eryuan Engineering Group Co. Ltd, 2017.7; Huang et al, 2020) …”

Section: Experimental Studymentioning

confidence: 99%

“…It forms a transparent hydrogel after water absorption and has a theoretical water absorption capacity of approximately 250%. Under natural conditions, the resin degrades within 36 months, with the final products being CO 2 , H 2 O and sodium salt, which are harmless to the environment (Huang et al, 2020). Table 2 shows the component details of the new polymer composites (ADNB) used in this study.…”

Section: Experimental Studymentioning

confidence: 99%

“…In the present study, ADNB (new polymer composites) were developed to enhance the stability, strength and water retention capacity of the soil under different environmental conditions (i.e., areas prone to heavy rainfall and drought). Soil improvers were developed using different combinations of nano‐aqueous adhesive (NAB) and superabsorbent resin (SARn) (Huang et al, 2020; C. Zhou, Ge, et al, 2019; C. Zhou, Zhao, et al, 2019). While NAB is an emulsion solution with strong adhesion capacity on drying, SARn is a white granular substance with strong water absorption capacity.…”

Section: Introductionmentioning

confidence: 99%

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New polymer composites improve silty clay soil microstructure: an evaluation using NMR

Huang

Sun

et al. 2021

Land Degrad Dev

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Soil erosion is a major environmental threat. The purpose of this study was to develop new polymer soil improvers that could mitigate the risk of soil erosion by modifying the microstructure of the soil and improving the ecological self‐repair ability. In particular, this study investigated new polymer composites (ADNB) based on different combination ratios of nano‐aqueous adhesive (NAB) and superabsorbent resin (SARn). The effects of different types of ADNB on soil water characteristics and pore size distribution were systematically investigated using nuclear magnetic resonance (NMR). In addition, an empirical model based on experimental data was developed to describe the effects of ADNB on the soil‐water characteristic curves. The results showed that in comparison to natural soil, the application of ADNB could significantly increase the peak signal strength of the relaxation time curve. In addition, ADNB can effectively reduce the number of pores with diameters of 1.11–8.3 μm, increase the number of pores with diameters of 0.5–1.8 μm, but had little effect on the number of pores with diameters of 0–0.5 μm. Through NMR imaging analysis, the effects of ADNB on soil moisture absorption and storage were quantified. The results showed that the ratio and content of ADNB have an obvious effect on the soil‐water characteristic curve under low suction but showed little effect under high suction conditions, indicating that the water‐holding capacity has been improved.

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“… Note : (Source: Geological Survey Report of Wengyuan to Xinfeng Expressway in Shaoguan, China Railway Eryuan Engineering Group Co. Ltd, 2017.7; Huang et al, 2020) …”

Section: Experimental Studymentioning

confidence: 99%

Section: Experimental Studymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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New polymer composites improve silty clay soil microstructure: an evaluation using NMR

Huang

Sun

et al. 2021

Land Degrad Dev

Self Cite

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“…Droplets smaller than the interparticle space penetrate into the sand body, forming a more stable and less blowing agglomerate under the influence of adhesion and intermolecular forces. Compared with single sand particles, the formed agglomerates have a larger mass and volume, which can increase the surface roughness and thus increase the starting wind speed; additionally, the agglomerates have the function of keeping the soil particles stable and improving the soil structure [71,120,121]. Chemical measures maintain the silt-clay content by agglomerating them to reduce blowing rather than radically increasing the silt-clay content.…”

Section: Chemical Sand Fixation Measuresmentioning

confidence: 99%

Occurrence Regularity of Silt–Clay Minerals in Wind Eroded Deserts of Northwest China

Liu

Sun

et al. 2021

Sustainability

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Wind erosion desertification is the most serious type of land degradation in Northwest China, so it is an important task for ecological management in the region. As the core of ecological management, soil quality is mainly affected by the presence of silt–clay content. Therefore, the grasp of its occurrence regularity is the key to controlling wind erosion desertification. At present, research on silt–clay contents is mainly independent in each local area and lacks integrity, which makes it difficult to meet the overall evaluation and planning requirements. To this end, this paper reviewed the related studies on the occurrence and control of wind erosion desertification in recent years and collected nearly 300 relevant silt–clay content data points. We studied the occurrence regularity of silt–clay content during the occurrence and treatment of wind erosion desertification and revealed the mechanism of silt–clay content in different processes. On this basis, the degree of wind erosion desertification in the major areas of Northwest China in the last five years was evaluated by calculations based on soil typing theory, and the fractal dimension interval (2.41–2.53) for the critical discrimination of desertification in these areas was obtained. The results showed that there were obvious distribution intervals of silt–clay content for different degrees of wind erosion desertification. Qualitative changes in soil quality during degradation ranged from light to moderate wind erosion desertification. The occurrence and control of wind erosion desertification were largely affected by the processes of silt–clay particles loss and aggregation. Among the three main treatment measures, biological measures enhanced silt–clay content most significantly. In this study, the occurrence regularity of silt–clay minerals in wind erosion desertification in Northwest China was revealed as a whole. This study provided a preliminary overall judgement of the dynamic evolution of wind erosion desertification, which provided a reference for the overall evaluation and global governance planning of wind erosion desertification in Northwest China.

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“…The pH value was 6.7-7. This material is environmentally friendly, as it will not cause harm to animals or plants, and has a high degree of safety [9].…”

Section: Introductionmentioning

confidence: 99%

Erosion Control and Growth Promotion of W-OH Material on Red Clay Highway Slopes: A Case Study in South China

Qin

Zhang³

et al. 2021

Sustainability

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Ecological restoration is difficult on the red clay highway slopes in the rainy areas in South China that experience severe soil erosion. By using the hydrophilic polyurethane material W-OH to solidify and protect red clay slopes, the erosion control will be substantially improved. We employed simulated rainfall erosion experiments and pot experiments to evaluate the anti-corrosion and growth promotion performances. We found that, (1) in the initial stage of protection, W-OH had the effect of accelerating slope drainage, solidifying the soil structure, and reducing soil loss, with the sediment reduction benefit reaching 37.4–65.3%. (2) The anti-erosion effect was mainly based on soil solidification. (3) The W-OH was affected by rainfall intensity and the W-OH concentration, and the soil erosion prediction equation was constructed according to the observation. (4) W-OH had a promising water retention performance and can promote the germination and late growth of slope plants to reduce the influence of eluviation. (5) The suitable W-OH solution concentration was 3–5% for slope protection herbs and shrubs, which were commonly used in South China. (6) The reduction in porosity was the fundamental cause of water retention improvement. The ecological restoration of slopes is a comprehensive process. Therefore, both anti-erosion performance and later plant growth are necessary. Our research provides a theoretical and experimental basis for applying the W-OH in the ecological restoration of the red clay slopes in subtropical areas and expanding the scope of the W-OH.

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Enhancement of soil ecological self-repair using a polymer composite material

Cited by 37 publications

References 15 publications

New polymer composites improve silty clay soil microstructure: an evaluation using NMR

New polymer composites improve silty clay soil microstructure: an evaluation using NMR

Occurrence Regularity of Silt–Clay Minerals in Wind Eroded Deserts of Northwest China

Erosion Control and Growth Promotion of W-OH Material on Red Clay Highway Slopes: A Case Study in South China

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