麦秸秆的力学性能及加筋滨海盐渍土的抗压强度研究

为开展天然草本纤维材料防腐前后的力学性能及加筋滨海盐渍土的抗压强度增长规律研究，本文探讨了麦秸秆的微结构特征及防腐方法、测试并对比了防腐前后的麦秸秆的质量增加率、吸水率、极限拉力和极限延伸率，证实用SH胶浸泡麦秸秆不仅能起到防腐作用，还可提高麦秸秆的力学性能。完成了不同加筋长度、不同加筋率及浸胶后呈不同状态麦秸秆的加筋滨海盐渍土无侧限抗压强度试验，结果证实：掺加长10mm麦秸秆优于掺加长20 mm麦秸秆；适宜加筋率为0.3%~0.4%；掺加浸泡SH胶后呈潮湿状态的麦秸秆优于掺加浸泡SH胶后呈干燥状态的；麦秸秆加筋盐渍土的抗压强度高于素盐渍土。初步的研究结果表明，麦秸秆适宜作加筋材料使用。

MECHANICAL PROPERTIES OF WHEAT STRAW AND STRENGTH OF ITS REINFORCED INSHORE SALINE SOIL 

This paper presents the mechanical performance of herbage fiber materials before and after anticorrosion and the strength characteristics of wheat straw reinforced inshore saline soil. It discusses the microstructure characteristics and the anti-corrosive method of the wheat straw.  The wheat straw is tested and compared the increasing rate of weight, the water absorption, the tensile force and elongation of the wheat straws before and after anticorrosion treatment. The test results show that the soaking wheat straw into SH agent can not only protect it from corrosiveness, but also improve its mechanical properties. The results of unconfined compressive strength test of different lengths and adding ratios of wheat straw, and conditions after soaking agent show that the unconfined compressive strength of reinforced soil with 10mm long wheat straw is higher than that of the 20mm long wheat straw. The suitable adding ratio is about 0.3%~0.4% in weight. The mixture with wheat straw in wet condition after soaking SH agent is better than that in dry condition. The strength of reinforced saline soil in inshore with wheat straw is higher than the original saline soil. Preliminary results show that wheat straw is suitable for using as the reinforcement.