Abstract：
In this study, full iron tailings concrete (FITC) was created using iron tailings from a tailings pond in Qian\'an, China. Iron tailings account for 86.8% of the total mass of solid raw materials in the FITC. To enable large-scale use of FITC, a comprehensive investigation of the structural behaviour of full-iron tailing-reinforced concrete (FITRC) specimens is warranted. Therefore, eight rectangular reinforced concrete (RC) columns with conventional reinforced concrete (CRC) as a control were tested to investigate the effects of section dimensions, initial eccentricities, and concrete strengths, on the structural behaviour of FITRC columns under large eccentric short-term loading. The experimental and analytical results indicated that the sectional strain of the FITRC columns satisfied the plane-section assumption under short-term loading, and the lateral deflection curve agreed well with the half-sinusoidal curve. In addition, the FITRC columns exhibited a slightly lower cracking load and lower ultimate load capacity than the CRC columns, and the crack widths were larger than those of the CRC columns. The reduction in the load capacity observed in the FITRC was within the permissible range stated in the design code, thereby satisfying the code requirements. The deformation coefficients of the FITRC and CRC columns were identical, and the cracking and ultimate loads calculated according to the current code and theories were in good agreement with the measured results.
摘要：
在这项研究中,全铁尾矿混凝土（FITC）是使用来自迁安尾矿池的铁尾矿制成的，中国。铁尾矿占FITC固体原料总质量的86.8%。为了实现FITC的大规模使用，有必要对全铁尾矿钢筋混凝土（FITRC）标本的结构行为进行全面调查。因此,以常规钢筋混凝土（CRC）为对照的八个矩形钢筋混凝土（RC）柱进行了测试，以研究截面尺寸的影响，最初的怪癖，和具体的优势，FITRC柱在大偏心短期荷载下的结构性能。实验和分析结果表明，在短期荷载下，FITRC柱的截面应变满足平面截面假设，横向挠度曲线与半正弦曲线吻合良好。此外,FITRC柱表现出比CRC柱略低的开裂荷载和较低的极限荷载能力，裂纹宽度大于CRC列。在FITRC中观察到的负载能力的减少在设计规范中规定的允许范围内，从而满足规范要求。FITRC和CRC柱的变形系数相同，根据现行规范和理论计算的开裂和极限载荷与实测结果吻合良好。
