辽宁工程技术大学学报（自然科学版）2025，Vol.44Issue(5)：561-567,7.DOI:10.11956/j.issn.1008-0562.20250009
生蚝壳粉改良软黏土性能试验研究
Experimental study on the performance improvement of soft clay using oyster shell powder
摘要
Abstract
To address the high energy consumption issue associated with lime-stabilized soft clay,oyster shell powder was used as a substitute for lime,with incorporation rates of 0,3%,6%,9%,12%,15%,18%,and 21%.The effects of oyster shell powder on the fundamental physical and mechanical properties of soft clay and the improvement mechanism were investigated through X-ray diffraction(XRD)diffraction tests,liquid-plastic limit tests,compaction tests,and shear strength tests.The research results indicate that oyster shell powder reduces the kaolinite content in soft clay and increases the dry density of the soil.As the incorporation rate of oyster shell powder increases,the cohesion and shear strength of the soil first increase and then decrease,while the internal friction angle gradually increases before stabilizing.Under a vertical pressure of 75 kPa and an oyster shell powder incorporation rate of 12%,the shear strength of the soil increased by 185.3%compared to pure soft clay.The optimal incorporation rate of oyster shell powder for improving soft clay is recommended to be 12%.The findings of this study can provide a reference for the application of oyster shell powder in soft clay improvement.关键词
软黏土/生蚝壳粉/抗剪强度特征/X射线衍射/胶结作用Key words
soft clay/oyster shell powder(OSP)/shear strength characteristics/X-ray diffraction(XRD)/cementation action分类
建筑与水利引用本文复制引用
张德恒,徐奋强,陈宇洋,任婧,陈礼谦,蔡金皊,周缘,陈子曈..生蚝壳粉改良软黏土性能试验研究[J].辽宁工程技术大学学报（自然科学版）,2025,44(5):561-567,7.基金项目
国家自然科学基金项目(42402286) （42402286）
江苏省产学研基金项目(FZ20240174) （FZ20240174）
