(河北农业大学城乡建设学院, 保定 071001)

摘要: 以唐山地区的铁尾矿粉、铁尾矿砂、铁尾矿石分别替代粉煤灰、河砂、碎石作为混凝土的掺合料及粗细骨料,研究铁尾矿对混凝土与钢筋粘结性能的影响. 结果表明:尾矿粉混凝土与钢筋的粘结性能比粉煤灰混凝土差;而尾矿粉-尾矿砂混凝土与钢筋的粘结性能优于尾矿粉混凝土;全尾矿混凝土与钢筋的粘结性能优于尾矿粉-尾矿砂混凝土且优于粉煤灰混凝土.

关键词: 铁尾矿; 拔出试验; 粘结性能; 破坏形态

中图分类号:TU528. 041 文献标志码:A 文章编号:1002-848X(2023)10-0086-05

DOI:10. 19701 / j. jzjg. 20201421

Experimental study on the influence of iron tailing on the bonding performance between concrete and steel bar

SUN Jianheng, DUAN Yajing, DUN Chenyang, GUO Yao, MA Xinxin

(Urban and Rural Construction Institute, Hebei Agricultural University, Baoding 071001, China)

Abstract: The iron tailings powder, iron tailings sand and iron tailings in Tangshan area were used to replace fly ash, riversand and gravel respectively as admixture and coarse aggregate of concrete. The influence of iron tailings on the bondingperformance between concrete and steel bar had been studied. The results show that the bonding performance of iron tailingspowder concrete and steel bar is a little worse than that of fly ash concrete, while that of iron tailings powder-iron tailingssand concrete and steel bar is better than that of iron tailings powder concrete. The bonding performance of full iron tailingsconcrete and steel bar is better than that of iron tailings powder-iron tailings sand concrete and fly ash concrete.Keywords:iron tailing; pullout test; bonding performance; failure mode

∗河北省重点研发计划(19211502D).

通信作者:孙建恒,博士,教授,博士生导师,主要从事混凝土结构与钢结构研究,Email:sjh@ hebau. edu. cn.

[引用本文] 孙建恒,段雅静,敦晨阳,等. 铁尾矿对混凝土与钢筋粘结性能影响试验研究[J]. 建筑结构,2023,53(10):86-90. SUN Jianheng,DUAN Yajing,DUN Chenyang,et al. Experimental study on the influence of iron tailing onthe bonding performance between concrete and steel bar[J]. Building Structure,2023,53(10):86-90.