铁道科学与工程学报Issue(3)：540-544,5.
水泥砂浆桩无侧限抗压强度试验研究
Experimental study on unconfined co mpressive strength of ce ment mortar pile
摘要
Abstract
Through unconfined compressive strength (UCS)test of cement mortar pile in laboratory,its develop-ment rules in different sand contents,different cement contents and different curing ages are studied.The experi-mental results indicate that the mixing with a certain amount of sand can significantly increase the strength of ce-ment mortar pile under a certain cement content condition.When the cement content is same,the UCS of cement mortar pile is 2.2 ~3.7 times than the UCS of cement stabilized soil when the curing age is 28 days.The UCS of cement mortar pile increases significantly with the increase of sand content,however,the strength of the speci-mens decreases after sand content is 30%.The results indicate that with the increase of curing period and cement ratio,the strength of the specimens increase significantly.Nevertheless,the decrease rate of UCS resulted from the increase of curing days.The deformation modulus of cement mortar pile increases with the growth of UCS. Plastic fracture could be described fracture characteristics of the specimen with low sand content;low cement ra-tio and short curing days.At the same time,the fracture characteristics of the specimen with high sand content, high cement ratio and long curing days.The result provides test data and theoretical basis for the practical appli-cation of engineering.关键词
水泥砂浆桩/无侧限抗压强度/水泥掺入比/掺砂量/龄期/破坏模式Key words
cement mortar pile/UCS/cement content/sand content/curing age/fracture characteristics分类
建筑与水利引用本文复制引用
隋瑞凌,阮波,李雪松..水泥砂浆桩无侧限抗压强度试验研究[J].铁道科学与工程学报,2015,(3):540-544,5.基金项目
中南大学实验室开放专项资金资助项目 （）
