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在分析改性前后植物纤维表面性状差异的基础上,研究了植物纤维改性状况、种类和掺量对黄河泥沙基生土材料力学性能、耐水性和微观结构的影响.结果表明:黄麻纤维和秸秆纤维经过改性作用后,其表面积和粗糙度显著提高;当改性黄麻纤维掺量(体积分数)为0.8%~1.2%时,生土材料的力学性能和耐水性均显著提高;当掺入原状黄麻纤维时,生土材料的抗压强度随着其掺量的增加而降低;当掺入原状和改性秸杆时,生土材料的耐水性随着其掺量的增加而降低;改性黄麻纤维与基体材料之间黏结紧密,能起到增强生土材料的作用.
Based on the analysis of the differences in the surface properties of plant fiber before and after modification, the effects of plant fiber modification, species and dosage on the mechanical properties, water resistance and microstructure of the Yellow River sediment-based raw soil were studied. The results showed that: And the surface area and roughness of straw fiber were significantly improved after modification. When the content of modified jute fiber (volume fraction) was 0.8% ~ 1.2%, the mechanical properties and water resistance of raw soil material increased significantly. When The incorporation of intact jute fiber, the compressive strength of raw soil material decreases with the increase of its content; when incorporation of intact and modified straw, the water resistance of raw soil material decreases with the increase of its content ; Modified jute fiber and the substrate material between the close bond, can play a role in enhancing the raw soil material.