铁道科学与工程学报2017，Vol.14Issue(4)：721-729,9.
干湿循环条件下复合固化砂土抗压强度试验研究
Strength characteristics of fiber-reinforced solidified sand under dry-wet cycles
摘要
Abstract
In order to investigate the mechanical properties of the cement, lime and multi fiber composite sand in dry wet circles, the unconfined compressive strength test was conducted on the basis of the orthogonal design scheme. Corresponding microcosmic mechanism was analyzed by scanning electron microscopy (SEM) test. Test results show that the influence of age and curing agent on the compressive strength of the composite solidified sand is maximum, the influence of number of cycles of wet and dry cycles is second. The amount of fiber and the amount of curing agent have a certain effect, the effect of fiber variety on unconfined compressive strength is the least. The effect is better when the fiber content is 0.45% and the curing agent content is 8%. The unconfined compressive strength of the solidified sand with fiber reinforced is significantly decreased with the increase of dry wet cycle times, 8% concrete and 0.45% modified polypropylene fiber is suggested.关键词
机场工程/干湿循环/强度特性/微观形貌/复合固化砂土Key words
airfield engineering/dry-wet cycle/strength characteristics/micro topography composite solidified sand分类
建筑与水利引用本文复制引用
王天,翁兴中,张俊,姜乐,刘鹏程,张师..干湿循环条件下复合固化砂土抗压强度试验研究[J].铁道科学与工程学报,2017,14(4):721-729,9.基金项目
军队横向科研基金资助项目(050101) （050101）
