新疆大学学报（自然科学版中英文）2026，Vol.43Issue(2)：238-249,12.DOI:10.13568/j.cnki.651094.651316.2025.06.19.0002
CT技术下掺油泥改性生土的孔隙损伤研究
Pore Structure Deterioration in Oil Sludge-Modified Raw Soil:A CT-Based Investigation
摘要
Abstract
In order to study the mesoscale pore structure and damage evolution of modified raw soil materials incorporating cement and oil sludge,CT scanning tests are conducted on cube specimens under axial pressure.Cross-sectional CT images of the specimens at different stress stages under dynamic load are obtained,and the variation law of internal porosity of materials with different ratios is quantitatively characterized by gray scale analysis and threshold processing methods.The intrinsic rela-tionship between porosity and material damage is established,which reveals the evolution law of damage in modified raw soil materials with stress and the corresponding failure mechanisms.The results show that:under different stress conditions,the cracks of YS1 specimens extend from the core compression zone to the edge,and YS2 specimens exhibit a"figure-eight"fail-ure mode.The addition of oil sludge promotes the formation of a gel with strong binding capacity and plasticity,which en-hances the deformability of YS2 specimens.Increasing the cement content leads to the generation of dense crystalline poly-mers,which results in superior mechanical performance of YS1 specimens.In the XY and YZ scanning sections,porosity varia-tions differ significantly among specimens under different stress conditions.The damage degree of YS1 specimens increases continuously,whereas that of YS2 specimens rises initially and then declines.Although YS2 specimens exhibit lower overall damage levels,their mechanical performance remains inferior to that of YS1 specimens.Excessive oil sludge content ad-versely affects mechanical properties,which suggests an optimal mass ratio of oil sludge to cement of approximately 1∶2.关键词
CT技术/改性生土材料/灰度图/孔隙率/损伤度Key words
CT technique/modified raw soil material/gray scale map/porosity/damage degree分类
建筑与水利引用本文复制引用
张坤,杨应龙,兰官奇,惠渊涛,田安涛,缑鹏..CT技术下掺油泥改性生土的孔隙损伤研究[J].新疆大学学报（自然科学版中英文）,2026,43(2):238-249,12.基金项目
国家自然科学基金"纤维增强生土互锁砌块墙体抗震/保温性能一体化提升机理"(52308204) （52308204）
山东省自然科学基金"混凝土构件智能化振捣与养护作用机理及装备研究"(ZR2024ME094) （ZR2024ME094）
西安石油大学研究生创新基金项目"CT技术下掺固废改性生土材料研究"(YCX2413146) （YCX2413146）
渭南市科技计划重点研发项目"自嵌固生土砖墙体-型钢组合结构产业化农房关键技术研发"(ZDYFJH-772) （ZDYFJH-772）
陕西省教育厅重点科学研究计划项目"自嵌固生土墙体型钢组合结果关键技术应用研究"(25JR134). （25JR134）
