摘要
为了探究泡沫轻质土的环境耐久性,进行了淡水和海水条件下泡沫轻质土的干湿循环试验以及水标养、标养、海水养护、Na2SO4溶液侵蚀、MgSO4溶液侵蚀5种条件下泡沫轻质土的侵蚀试验,并对试样进行抗压强度测试,分析了淡水和海水条件下泡沫轻质土抗压强度随干湿循环次数的变化规律、不同养护条件下以及不同龄期对泡沫轻质土强度的影响。试验结果表明,泡沫轻质土的抗压强度受干湿循环的影响较大,淡水条件下的干湿循环与海水条件下的干湿循环差别不大;水的存在对泡沫轻质土强度发展有着重要的影响,海水对泡沫轻质土的强度有一定的影响但影响幅度很小;硫酸盐对泡沫轻质土的长期强度有重要影响。
In order to investigate the environmental durability of foamed light-weight soil, the dry-wet cycle test of foamed light-weight soil under freshwater and seawater conditions and the erosion test of foamed light-weight soil under five conditions of water standardization, standard culture, seawater conservation, Na2SO4 solution erosion and MgSO4 solution erosion were carried out. The compressive strength test was carried out. The variation of the compressive strength of foam light-weight soil with the number of dry-wet cycles under the conditions of fresh water and seawater, and the influence of foaming light soil strength under different curing conditions and different ages were revealed.The test results show that the compressive strength of foamed light-weight soil is greatly affected by the dry-wet cycle, and the dry-wet cycle under freshwater conditions is not much different from the dry-wet cycle under seawater conditions.The presence of water has an important influence on the strength development of foamed light-weigh soil, and the influence of seawater on its strength is small.Sulfate has an important influence on the long-term strength of foamed light-weight soil.
作者
闫华文
项小伟
YAN Hua-wen;XIANG Xiao-wei(School of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha 410114,China;Zhejiang Hongtu Transportation Construction Company, Hangzhou 310051,China)
出处
《长沙理工大学学报（自然科学版）》
CAS
2019年第3期34-40,89,共8页
Journal of Changsha University of Science and Technology:Natural Science
关键词
泡沫轻质土
耐久性
干湿循环
侵蚀
抗压强度
硫酸盐
foamed light-weight soil
durability
dry-wet cycle
erosion
compressive strength
sulfate
