【摘要】 为开发加筋新材料,提出了以防腐处理后的麦秸秆作加筋固化滨海盐渍土的构想。利用扫描电镜观察被SH胶浸泡后的麦秸秆,发现麦秸秆孔隙中渗入了胶体物质且在麦秸秆内外表皮附着了胶膜,浸泡SH胶能增强麦秸秆的防腐能力。拉伸试验结果证实,浸胶后再浸水的麦秸秆较天然麦秸秆的极限拉力和极限延伸率均有较大提高,浸泡SH胶增强了麦秸秆的抗拉能力和延展性能。若利用浸胶后的麦秸秆加筋固化滨海盐渍土,可将麦秸秆与滨海盐渍土均匀拌和在一起,以增强土体的强度和整体性。麦秸秆加筋滨海盐渍土的补强机制可用"弯曲机理"和"交织机理"予以解释。更多还原

【Abstract】 Based on the idea to develop the new reinforced material,a new concept that the saline soil in littoral area is reinforced with the anticorrosive wheat straw is proposed. By means of SEM photos,it is proved that the SH agent is infiltrated through the pores of wheat straw,and is adhered to surface of wheat straw,the SH agent could enhance the capability of wheat straw on anticorrosion. The results from the tensile tests are certified that the ultimate pull and the extension rate of the wheat straw marinated in SH agent are greatly increased and more than that of the wheat straw in natural state under the condition of the same soaking time.The saline soil in littoral area could be reinforced with the wheat straw marinated in SH agent,which could increase the strength and stability of reinforced soil. The strengthening mechanism of reinforced soil with wheat straw could be explained by the bending mechanism and the intercrossing mechanism.更多还原