轴压下掺铁尾矿砂和水泥的生土材料细观损伤演化研究

张坤; 杨文豪; 吕雪瑞; 付智勇; 芦白茹; 杨战社

doi:10.13568/j.cnki.651094.651316.2024.04.02.0003

您当前的位置：

首页 >

文章列表页 >

轴压下掺铁尾矿砂和水泥的生土材料细观损伤演化研究

工程技术 | 更新时间：2026-01-21

- 轴压下掺铁尾矿砂和水泥的生土材料细观损伤演化研究
- 轴压下掺铁尾矿砂和水泥的生土材料细观损伤演化研究
- 新疆大学学报（自然科学版中英文） 2024年41卷第4期页码：488-496
- 作者机构：
  
  1. 西安石油大学土木工程学院
  2. 西安石油大学博士后创新基地/基建处
  3. 西安石油大学机械工程学院
  4. 西安欧亚学院人居环境学院
- 作者简介：
- 基金信息：
  
  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）;陕西省自然科学基础研究计划青年项目“构型力学理论对生土基材料受力损伤机理研究”（2022JQ-562）;西安市科技计划项目“装配式自嵌固生态组合产业化农房建筑设计理论及应用研究”（2022JHRYFW-0125）;西安石油大学研究生创新与实践项目“轴压下掺铁尾矿砂和水泥的生土材料细观损伤演化研究”（YCS23214279）
- DOI：10.13568/j.cnki.651094.651316.2024.04.02.0003
  中图分类号： TU521.3
- 纸质出版：2024
- 稿件说明：
移动端阅览
[1]张坤,杨文豪,吕雪瑞,等.轴压下掺铁尾矿砂和水泥的生土材料细观损伤演化研究[J].新疆大学学报(自然科学版中英文),2024,41(04):488-496.
[1]张坤,杨文豪,吕雪瑞,等.轴压下掺铁尾矿砂和水泥的生土材料细观损伤演化研究[J].新疆大学学报(自然科学版中英文),2024,41(04):488-496. DOI： 10.13568/j.cnki.651094.651316.2024.04.02.0003.

DOI：10.13568/j.cnki.651094.651316.2024.04.02.0003.

摘要

为研究铁尾矿砂改性生土基材料在轴压下的损伤演化性能，采用CT技术，对不同应力状态下材料内部二值化图像进行分析．通过阈值分割，从细观上数值化各应力状态断面图像．研究材料分形维数、孔隙率和应力-应变（ε-σ）曲线演化规律，并阐明材料从受荷直至破坏的细观机理．结果表明：分形维数随受荷增大显著增加，σ=2.38 MPa时，分形维数最大．分形维数的变化趋势可间接表征试件受压时各扫描断面的不规则程度、粗糙度、裂缝与孔隙的发展情况．材料孔隙率随应力增大明显增加．以孔隙率为指标的材料损伤因子变化趋势与孔隙率变化规律相同，可有效反映材料在轴压下的破坏发展规律，也可作为研究改性生土试件损伤演化的定量参数．

Abstract

To study the damage evolution performance of iron tailings-modified rammed earth-based materials under dynamic loading

CT technology was used to analyze binary images of the material's interior under different stress states. Cross-sectional images were digitized by threshold segmentation at a microscopic level in each stress state. This research focused on the fractal dimension

porosity

and ε-σ curve evolution of the material

elucidating the microscopic mechanisms of materials from loading to failure. The results indicated that the fractal dimension increased significantly with increasing strength of material

reaching its maximum at σ=2.38 MPa. The irregularity

roughness

and development of cracks and pores in the scanned cross-sections during compression could be characterized by the changing trend of the fractal dimension indirectly. The porosity of the composite increased noticeably as the material undergoes failure and stress increases. The change trend of the material damage factor with porosity as index had same rules of the change of porosity

effectively reflecting the development of damage under axial compression and serving as a quantitative parameter for studying the damage evolution of modified rammed earth specimens.

关键词

Keywords

references

崔丽云．低活性铁尾矿对砂浆性能的调控机理[D]．淮南：安徽理工大学，2022.CUI L Y.Regulation mechanism of low activity iron tailings on properties of mortar[D].Huainan:Anhui University of Science and Technology,2022.(in Chinese)

SIDDIQUA S,BIGDELI A.Utilization of MgCl2solution to control collapse potential of soil[J].Transportation Geotechnics,2022,33:100731.

ONAKUNLE O,OMOLE D O,OGBIYE A S.Stabilization of lateritic soil from Agbara Nigeria with ceramic waste dust[J].Cogent Engineering,2019,6:1710087.

谢书衡．铁尾矿砂及微粉对水泥基材料性能影响及机理研究[D]．石家庄：石家庄铁道大学，2022.XIE S H.Effect of iron tailing ore and fine powder on properties of cement-based materials and its mechanism[D].Shijiazhuang:Shijiazhuang Tiedao University,2022.(in Chinese)

张子涵，魏文，张杰，等．基于CT扫描红层砂岩孔隙多标度分形维数的确定方法[J]．地质科技通报，2022,41(3):254-263.ZHANG Z H,WEI W,ZHANG J,et al.Determining method of multiscale fractal dimension of red bed sandstone pores based on CT scanning[J].Bulletin of Geological Science and Technology,2022,41(3):254-263.(in Chinese)

LI J L,TAN S J,YANG C,et al.Analysis of damage characteristics for skarn subjected to freeze-thaw cycles based on fractal theory[J].Fractal and Fractional,2023,7(5):354.

MWEMA F M,JEN T C,KASPAR P.Fractal theory in thin films:Literature review and bibliometric evidence on applications and trends[J].Fractal and Fractional,2022,6(9):489.

DOBRESCU G,PAPA F,STATE R,et al.Characterization of bimetallic nanoparticles by fractal analysis[J].Powder Technology,2018,338:905-914.

王帅，许莹，张艳博，等．基于CT扫描的砂岩主次裂纹扩展特征及影响因素研究[J]．岩土工程学报，2022,44(4):702-711.WANG S,XU Y,ZHANG Y B,et al.Characteristics and influencing factors for propagation of primary and secondary cracks in sandstone based on CT scan[J].Chinese Journal of Geotechnical Engineering,2022,44(4):702-711.(in Chinese)

丁文博．基于分形维数的冻融混凝土孔结构及微裂纹扩展研究[D]．西安：长安大学，2022.DING W B.Research on pore structure and microcrack propagation of freezing-thawing concrete based on fractal dimension[D].Xi’an:Chang’an University,2022.(in Chinese)

CARPINTERI A,CHIAIA B,CORNETTI P.A fractal theory for the mechanics of elastic materials[J].Materials Science&Engineering,A.Structural Materials:Properties,Misrostructure and Processing,2004,A365(1/2):235-240.

LIU P,CHEN Y,SHA F,et al.Study on micro structure and composition distribution of concrete surface zone based on fractal theory and XCT technology[J].Construction and Building Materials,2020,263:120209.

ARASAN S,YENER E,HATTATOGLU F,et al.The relationship between the fractal dimension and mechanical properties of asphalt concrete[J].International Journal of Civil and Structural Engineering,2010,1(2):165-170.

田威．混凝土损伤演化的CT研究及其在细观数值模拟中的应用[D]．西安：西安理工大学，2009.TIAN W.CT study on the concrete-damage evolution and its application in numerical stimulation[D].Xi’an:Xi’an University of Technology,2009.(in Chinese)

田威，党发宁，陈厚群．基于CT图像处理技术的混凝土细观破裂分形分析[J]．应用基础与工程科学学报，2012,20(3):424-431.TIAN W,DANG F N,CHEN H Q.Fractal analysis on meso-fracture of concrete based on the technique of CT image processing[J].Journal of Basic Science and Engineering,2012,20(3):424-431.(in Chinese)

魏佳妮．铁尾矿砂、水泥改性生土材料抗压性能及CT细观损伤试验研究[D]．西安：长安大学，2022.WEI J N.Experimental study on compressive properties and CT meso-damage of raw soil material modified by iron tailing and cement[D].Xi’an:Chang’an University,2022.(in Chinese)

张慧梅，袁超，慕娜娜，等．冻融岩石CT图像处理及细观特征分析[J]．西安科技大学学报，2022,42(2):219-226.ZHANG H M,YUAN C,MU N N,et al.CT image processing and mesoscopic characteristics analysis of freeze-thaw rock[J].Journal of Xi’an University of Science and Technology,2022,42(2):219-226.(in Chinese)

张坤，卫杨杨，邵鑫辉，等．CT技术下掺煤矸石和电石渣的生土材料损伤演化及孔隙研究[J]．科学技术与工程，2023,23(28):12182-12192.ZHANG K,WEI Y Y,SHAO X H,et al.Damage evolution and pore space of raw soil materials mixed with coal gangue and calcium carbide slag under CT technique[J].Science Technology and Engineering,2023,23(28):12182-12192.(in Chinese)

梁昕宇，党发宁，田威，等．基于CT图像的混凝土损伤演化分形特性研究[J]．西安理工大学学报，2010,26(4):382-387.LIANG X Y,DANG F N,TIAN W,et al.A study of fractal characteristics of concrete damage evolution under CT test condition[J].Journal of Xi’an University of Technology,2010,26(4):382-387.(in Chinese)

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

CT技术下掺油泥改性生土的孔隙损伤研究

多孔硅波导透镜的实验研究(英文)

用物理吸附法在多孔硅中嵌入聚合物PMMA的研究