Yang Ying, Liang Jiongfeng, Zou Wanjie, Wang Caisen, Liu Jicheng
Faculty of Civil & Architecture Engineering, East China University of Technology, Nanchang, China.
College of Civil and Architecture Engineering, Guangxi University of Science and Technology, Liuzhou, China.
PLoS One. 2025 Mar 18;20(3):e0318617. doi: 10.1371/journal.pone.0318617. eCollection 2025.
In order to solve the harm of industrial waste such as lithium slag and waste rubber to the environment, this paper put forward the structure of lithium slag and rubber concrete-filled steel tube (LSRuCFST) stub column, which was replaced cement and sand in concrete by lithium slag and waste rubber respectively. Through the axial compression test of 11 LSRuCFST specimens with various lithium slag replacement ratios (0, 10%, 20%, 30%) and rubber replacement ratios (0, 5%, 10%, 20%, 30%), the damage patterns and mechanical characteristics of LSRuCFST columns were studied. The experimental phenomena showed that the damage patterns of 11 specimens were similar to the ordinary concrete-filled steel tube (CFST) colunms. With 20% replacement ratio of lithium slag and 10% replacement ratio of rubber, the largest increase of bearing capacity was optimal. Then, the bearing capacities of LSRuCFST columns were investigated by domestic and international standards. Due to conservative predicted results, a modified computational formal for the LSRuCFST column bearing capacity was presented and verified by the test results of references.
为解决锂渣、废橡胶等工业废弃物对环境的危害，本文提出了锂渣橡胶钢管混凝土（LSRuCFST）短柱结构，该结构分别用锂渣和废橡胶取代混凝土中的水泥和砂。通过对11个不同锂渣取代率（0、10%、20%、30%）和橡胶取代率（0、5%、10%、20%、30%）的LSRuCFST试件进行轴压试验，研究了LSRuCFST柱的破坏模式和力学特性。试验现象表明，11个试件的破坏模式与普通钢管混凝土（CFST）柱相似。当锂渣取代率为20%、橡胶取代率为10%时，承载力增幅最大，效果最佳。然后，采用国内外标准对LSRuCFST柱的承载力进行了研究。由于预测结果偏于保守，提出了一种修正的LSRuCFST柱承载力计算式，并通过参考文献的试验结果进行了验证。
