长江科学院院报2012，Vol.29Issue(5)：26-31,6.
麦秸秆加筋土的轻型击实试验与击实土的抗压性能
Light Compaction Test of Saline Soil Reinforced with Wheat Straw and Compressive Property of Compacted Specimen
摘要
Abstract
Low strength and large deformation resulted from salt heaving, salt dissolution and water absorption of saline soil could be treated by reinforcement with anti-corrosive wheat straw. Light compaction test and compressive strength test on saline soil and reinforced saline soil with wheat straw shows that: first of all, with the increase of wheat straw length and reinforcement ratio, the optimum water content hardly decreases, and the maximum dry density increases slightly. Second, the compressive strength and deformation resistance of soil is improved by reinforcement with wheat straw. A wheat straw length of 30 mm and reinforcement ratio of 0. 25% are suitable for samples of 102 mm in diameter. Moreover, the stress-strain curves of reinforced soil are of strain softening when water content is less than the optimum value, and of strain hardening when larger than the optimum value, which are the same as that of saline soil. Finally, in small strain section, the stress-strain curves are close to each other, while in large strain section, the distance grow larger , which suggests that the reinforcement only functions with large strain in the soil. It's proved that reinforcement with wheat straw improves the compressive strength and deformation resistance of saline soil, and the reinforced soil has a good compaction effect for filling road embankment.关键词
轻型击实试验/加筋盐渍土/抗压强度/轴向应力应变Key words
light compaction test/ reinforced saline soil/ compressive strength/ vertical stress strain分类
建筑与水利引用本文复制引用
王沛,柴寿喜,仲晓梅,杨宝珠..麦秸秆加筋土的轻型击实试验与击实土的抗压性能[J].长江科学院院报,2012,29(5):26-31,6.基金项目
国家自然科学基金(41140024) （41140024）
天津市高等学校科技发展基金(20090901,SB20080083). （20090901,SB20080083）
