Effectiveness of a new organic polymer sand-fixing agent on sand fixation |
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| Authors: | Jin Liu Bin Shi Yi Lu Hongtao Jiang He Huang Gonghui Wang Toshitaka Kamai |
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| Institution: | (1) School of Earth Sciences and Engineering, Hohai University, Nanjing, 210098, China;(2) School of Earth Sciences and Engineering, Nanjing University, Nanjing, 210093, China;(3) School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, 210093, China;(4) School of Earth and Environmental Sciences, Anhui University of Science and Technology, Huainan, 232001, China;(5) Research Centre on Landslides, Disaster Prevention Research Institute, Kyoto University, Kyoto 611, Japan; |
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| Abstract: | Sand erosion due to wind is a serious problem in the relatively arid and semiarid areas. A new organic polymer sand-fixing
agent (PVIN), polymerized by the monomer of vinyl acetate, initiator and cross-linking agent, is introduced in this study.
To understand the effect of PVIN on sand fixation, the strength test, water-retaining test and wind erosion test were performed.
The results indicated that the presence of PVIN could improve the structural strength, water retaining and anti-wind erosion
ability. When the sand-fixing agent was applied on the sand surface, the crust in surface layer was produced. The structural
strength variations determined by micropenetrometer indicated that the specimens treated with concentrations of 1, 3, 5, 10,
and 20% PVIN have produced the crusts with thickness being approximately 1, 2, 4–5, 5, and 5–6 mm and the strength being around
1, 4.5, 18, 26 and 41, respectively. This crust has a good water-absorption, water-retaining and anti-evaporation properties.
It can also improve the anti-wind erosion ability, and also prevent the loose sand surface from forming a sand dune in the
wind erosion conditions. Additionally, this sand-fixing agent has a low cost, it is easier to produce and apply and also produces
no additional pollution. Therefore, this can be considered as an ideal soil-fixing agents to control sand erosion in the relatively
arid and semiarid areas. |
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