摘要
Abstract
In order to ensure good mechanical properties of cement soil under freeze-thaw and dry-wet conditions,by means of doping basalt fiber,the change laws of unconfined compressive strength of basalt fiber cement soil in general environment and under freeze-thaw and dry-wet conditions were studied.The result shows that,the unconfined compressive strength of basalt fiber cement soil in the first 28 days is significantly improved,and the cement soil with fiber length of 6 mm and fiber content of 0.4％has optimal mechanical properties;under the condition of freeze-thaw cycle,the increase of curing age may obviously increase the residual compressive strength of fiber cement soil in the initial freeze-thaw stage,and the residual compressive strength of fiber cement soil in the first 9 freeze-thaw cycles decreased significantly;under the condition of dry-wet cycle,the increase of curing age may have significant effect on increasing the residual strength of fiber cement soil undergoing dry-wet cycles less than 7 times,and the fiber length has little effect on the residual strength of fiber cement soil.关键词
公路路基/玄武岩纤维/水泥改良土/冻融和干湿循环/力学性能/无侧限抗压强度/纤维掺量/养护龄期/残留强度比Key words
highway subgrade/basalt fiber/cement improved soil/freeze-thaw and dry-wet cycle/mechanical property/unconfined compressive strength/fiber content/curing age/residual strength ratio分类
建筑与水利
