Test on the interface friction characteristics of silt-glass fiber reinforced polymer composite cloth
June19, 2020 Author
Glass fiber reinforced polymer composite material (GFRP) has high strength, good heat resistance, and strong alkali corrosion resistance. It has been widely used in the field of civil engineering. In order to study the interface friction characteristics between silt and GFRP cloth in the flooding area of the Yellow River, the direct shear friction test was carried out using the TZ-1 geosynthetic material comprehensive tester, and the influence of moisture content, compaction and normal stress on the interface was analyzed. Influence of friction characteristics.
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Figure 1. (a) Schematic diagram of direct shear friction experiment device. （b） Shear stress-displacement curve of silt-GFRP cloth interface under different normal stresses
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Figure 2. (a) Histogram of peak shear stress at the interface between silt and GFRP cloth under different compaction degree; (b) Variation curve of friction coefficient of silt-GFRP cloth interface with degree of compaction
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Figure 3. (a)The influence of water content on the shear strength of silt-GFRP cloth interface . (b)The curve of friction coefficient of silt-GFRP cloth as a function of water content
The experimental results show that the interfacial friction strength of silt and GFRP cloth in the yellow flooding area increases with the increase of compaction; the interfacial friction strength reaches the maximum when the moisture content of the soil is optimal, and it will Decrease; the interface shear resistance increases with the increase of the normal stress, and the friction coefficient decreases with the increase of the normal stress.
Research Publish:
[1] Zhang Jianwei, Yu Hang, Wang Shiqing. Test on the interface friction characteristics of silt-glass fiber reinforced polymer composite cloth in the flooding area of the Yellow River[J]. Journal of Composite Materials, 2019, 36(10): 2470-2477.