河南科技大学学报（自然科学版）2026，Vol.47Issue(2)：73-81,9.DOI:10.15926/j.cnki.issn1672-6871.2026.02.009
持续荷载-复合盐耦合作用下沙漠砂混凝土劣化机理研究
Research on the Degradation Mechanism of Desert Sand Concrete Under the Coupled Action of Sustained Load and Composite Salts
摘要
Abstract
To investigate the applicability of desert sand concrete in high-salinity areas of Xinjiang,this study analyzed the performance degradation patterns of desert sand concrete under sustained loading through long-term composite salt immersion tests.Research results show:Compared with initial strength,when sustained load is 0.3 and 0.5 times compressive stress,compressive strength of specimens soaked for 120 d is increased by 24.11%and 14.23%,respectively.When soaking age exceeds 120 d,test group under 0.5 times compressive stress is deteriorated more sharply.Decline rate of relative dynamic elastic modulus is increased by 23.35%compared with 0.3 times compressive stress.By SEM it can be seen that after 120 d of composite salt attack,accumulation of erosion products and 0.5 times compressive stress jointly accelerate performance deterioration of desert sand concrete.关键词
沙漠砂混凝土/盐渍土环境/持续荷载/耐久性损伤Key words
desert sand concrete/saline soil environment/continuous load/durability damage分类
建筑与水利引用本文复制引用
李琦,罗玲,程昊,田元,冯倍森..持续荷载-复合盐耦合作用下沙漠砂混凝土劣化机理研究[J].河南科技大学学报（自然科学版）,2026,47(2):73-81,9.基金项目
国家自然科学基金项目(52268046) （52268046）
