基于正交试验的金尾矿混凝土配合比设计研究  

Study on mix proportion design of gold tailings concrete based on orthogonal test

作　　者：赵津 刘心中 马树森 葛焰 ZHAO Jin;LIU Xinzhong;MA Shusen;GE Yan(School of Ecological Environment and Urban Construction,Fujian University of Technology,Fuzhou 350118,China)

机构地区：[1]福建理工大学生态环境与城市建设学院,福州350118

出　　处：《有色金属（矿山部分）》2024年第5期135-139,148,共6页NONFERROUS METALS(Mining Section)

基　　金：国家重点研发计划项目(2019YFC1904103)。

摘　　要：目的:为了有效解决金尾矿的处理问题以及缓解砂石资源短缺的现状,探索利用金尾矿替代部分天然砂制备金尾矿混凝土的可能性。方法:通过立方体抗压强度测试,结合正交试验方法,深入分析了水胶比、金尾矿代替率、砂率以及粉煤灰掺量这四个因素对金尾矿混凝土28 d抗压强度的影响。运用极差和方差法进行了系统分析,确定了各因素在影响金尾矿混凝土28 d抗压强度方面的权重;此外还基于正交试验的数据,建立了金尾矿混凝土抗压强度的多元回归方程。结果:研究结果表明,水胶比对金尾矿混凝土抗压强度影响最为显著,其次是金尾矿代替率、粉煤灰掺量、砂率。建立的回归方程R^(2)为0.872,可在一定程度上预测其抗压强度。意义:研究结果可为金尾矿资源的综合利用提供一定的参考价值。Purpose:To effectively address the disposal issues of gold tailings and alleviate the shortage of sandstone resources,this study investigated the potential of utilizing gold tailings as a partial replacement for natural sand in the production of gold tailings concrete.Method:Through a series of cube compressive strength tests and orthogonal experimental methods,this research conducted a comprehensive analysis of the impacts of four factors:water-binder ratio,gold tailings substitution rate,sand ratio,and fly ash content,on the 28-day compressive strength of gold tailings concrete.The systematic analysis was performed using range and variance analysis methods,which determined the relative importance of each factor in influencing the 28-day compressive strength of the concrete.Furthermore,a multiple regression equation was established for predicting the compressive strength of gold tailings concrete based on the orthogonal experimental data.Conclusion:The results indicated that the water-binder ratio had the most significant effect on the compressive strength,followed by the gold tailings substitution rate,fly ash content,and sand ratio.The regression equation,with an R^(2)value of 0.872,can predict the compressive strength to a considerable degree.Significance:The research results can provide some reference value for the comprehensive utilization of gold tailings resources.

关 键 词：金尾矿 混凝土 正交试验 立方体抗压强度 多元线性回归 

分 类 号：TU528[建筑科学—建筑技术科学] D926.4[政治法律—法学]