通过正交试验设计配制改性剂对铬铁渣进行改性,正交试验是研究多因素试验问题的重要方法,单纯利用极差和方差分析正交试验结果存在准确性较低,以及增加试验总数或减少独立因子数的弊端。基于砂浆强度解耦法结合回归分析检验了正交试验结果的极差和方差分析,量化研究了改性剂4因子（硅酸钠、水泥、矿渣粉质量及浸泡铬铁渣时间）对于中间变量（改性铬铁渣吸水率）的影响,分析其在制备砂浆过程中进一步通过影响水胶比对强度产生的影响。结果表明：在配制改性剂对铬铁渣改性到改性的铬铁渣制备成改性铬铁渣砂浆的过程中存在耦合关系,借助SPSS软件以及其他手段解耦并进行了定量分析。该项研究为试验数据处理与统计提供了一种利用解耦法思维梳理影响关系,并结合回归分析达到由定性分析到定量分析的转变。

Through the orthogonal test design,the modifier was prepared to modify ferrochrome slag.The orthogonal test is animportant method to study the multi factor test problems.The accuracy of the orthogonal test results is low by using range and variance analysis only,as well as the disadvantages of increasing the total number of tests or reducing the number of indepen-dent factors.Based on the decoupling method of mortar strength and regression analysis,the range and variance analysis of orthogonal test results were tested,and the influence of four factors of modifier（sodium silicate,cement,slag powder and soa-king time of ferrochrome slag） on the intermediate variable （water absorption of ferrochrome slag modified） was quantita-tively studied,and the influence of water to binder ratio on the strength was further analyzed during the preparation of mortar.The results showed that there was a coupling relationship between the preparation of modifier and the preparation of modified ferrochrome slag mortar,which was decoupled and quantitatively analyzed by SPSS software and other means.This study provided a way for data processing and statistics to use decoupling method to sort out the influence relationship,and combined with regression analysis to achieve a way from qualitative analysis to quantitative analysis.