基于RSM的工业副产品改性硫铝酸钙水泥性能分析  

Performance analysis of industrial by-products modified calcium sulphoaluminate cement based on RSM

作　　者：薛建飞 梁冰[1] 何星星 田多文 冯佃芝 舒立彬 万勇[2,3] XUE Jianfei;LIANG Bing;HE Xingxing;TIAN Duowen;FENG Dianzhi;SHU Libing;WAN Yong(School of Mechanics&Engineering,Liaoning Technical University,Fuxin,Liaoning 123000,China;State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan,Hubei 430071,China;Hubei Provincial Engineering Research Center of Safety Treatment and Ecological High-value of MSW,Wuhan,Hubei 430071,China;Wuhai Energy Co.,Ltd.,CHN Energy Group,Wuhai,Inner Mongolia 016000,China)

机构地区：[1]辽宁工程技术大学力学与工程学院,辽宁阜新123000 [2]中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,湖北武汉430071 [3]湖北省固体废弃物安全处置与生态高值化利用工程技术研究中心,湖北武汉430071 [4]国家能源集团乌海能源有限责任公司,内蒙古乌海016000

出　　处：《排灌机械工程学报》2024年第1期30-36,共7页Journal of Drainage and Irrigation Machinery Engineering

基　　金：内蒙古重大科技计划项目(2021ZD0007);国家自然科学基金资助项目(5197091360,51861165104,41774197);中国科学院青年创新促进会资助项目(2021327);中国科学院岩土力学研究所岩土力学与工程国家重点实验室开放研究基金资助项目(SKLGME021030)。

摘　　要：为研究工业副产品烟气脱硫石膏(FGDG)、粉煤灰(FA)和石灰石(LS)对硫铝酸盐水泥(SAC)熟料无侧限抗压强度(UCS)和pH的影响规律,采用FGDG,FA和LS改性SAC熟料,并在7 d和28 d龄期进行UCS和pH测试.采用响应面方法(RSM),建立UCS和pH的回归模型,分析各因素交互对其影响.研究结果表明:UCS和pH均受到FGDG,FA和LS单因素和各因素交互作用影响.FGDG和LS,LS和FA的交互作用对浆体7 d和28 d的UCS影响显著,LS和FA,FGDG和FA的交互作用对浆体pH 7 d影响显著,但对浆体pH 28 d影响并不显著.利用RSM-BBD多目标优化法进行优化各工业副产品,建立的回归模型具有较高的可信度和精确度,得到改性硫铝酸钙水泥满足高UCS低pH时各工业副产品的合适添加比,其试验值和预测值误差较小.To investigate the pattern of influence of industrial by-products such as flue gas desulfurization gypsum(FGDG),fly ash(FA),and limestone(LS)on the strength and pH of calcium sulphoaluminate cement(SAC),FGDG,FA and LS were used as solid waste admixture to modify SAC clinker and the modified SAC cured for 7 d and 28 d was tested for unconfined compressive strength(UCS)and pH.Response surface methods(RSM)were also used to develop regression models for the UCS and pH of the modified SAC.The effect patterns of each factor on UCS and pH were analyzed.The results of the study show that both the UCS and pH of the modified SAC are influenced by the single and multifactorial effects of FGDG,FA,and LS.The interaction between FGDG and LS,LS and FA has a significant effects on UCS 7 d and UCS 28 d.The interaction between LS and FA,FGDG and FA has a significant effects on pH 7 d,but not on pH 28 d.The RSM-BBD multi-objective optimization method are used to optimize industrial by-products,the established regression model has high reliability and accuracy,and the optimal addition ratio meeting the requirements of high strength and low alkali-nity is obtained,and the error of the test and the predicted values is small under this ratio.

关 键 词：硫铝酸钙水泥 烟气脱硫石膏 粉煤灰 石灰石 响应面法 无侧限抗压强度 

分 类 号：S277.9[农业科学—农业水土工程]