粒化高炉矿渣混合水泥抗硫酸盐性能研究与预测  

Study and Prediction of Sulfate Carrying Performance of Ground Granulated Blast Furnace Slag

作　　者：吴海燕[1] 张永伟 李双喜[3] WU Haiyan;ZHANG Yongwei;LI Shuangxi(Testing and Experimental Research Center,Xinjiang Water Conservancy and Hydropower Research Institute,Changji 831100,China;Construction Management and Quality Safety Center of Xinjiang Water Resources Department,Urumqi 830000,China;College of Water Conservancy and Civil Engineering,Xinjiang Agricultural University,Urumqi 830052,China)

机构地区：[1]新疆水利水电勘测设计研究院检测试验研究中心,新疆昌吉831100 [2]新疆水利厅建设管理与质量安全中心,新疆乌鲁木齐830000 [3]新疆农业大学水利与土木工程学院,新疆乌鲁木齐830052

出　　处：《粉煤灰综合利用》2022年第3期86-93,共8页Fly Ash Comprehensive Utilization

摘　　要：混凝土结构遭受硫酸盐侵蚀破坏屡见不鲜,为提高其抗侵蚀能力,本文将以高炉粒化矿渣混合水泥(GGBFS)作为研究对象;分析高炉粒化矿渣掺量、水胶比与硫酸盐溶液浓度对试件抗折强度、抗蚀系数影响;同时,为进一步探索这三个因素之间的关系,基于试验数据建立投影寻踪回归(PPR)预测模型。结果表明:低水胶比、高掺量矿渣粉混凝土能减少石膏与钙矾石生成,并且能够抵抗硫酸根离子溶液为20250 mg/L及其以下的侵蚀;PPR回归预测模型能够实现“降维寻优”高精度预测矿渣水泥混凝土抗折强度;基于PPR预测模型计算出影响因子排序为:矿渣粉掺量>水胶比>硫酸盐溶液浓度。It is common for concrete structures to suffer from sulfate erosion.In order to improve their corrosion resistance,this paper takes ground granulated blast furnace slag(GGBFS)as the research object.The effects of the content of granulated slag,water-binder ratio and sulfate solution concentration on the flexural strength and corrosion resistance coefficient of blast furnace were analyzed.At the same time,in order to further explore the relationship between the three factors,a projection pursuit regression(PPR)prediction model was established based on the experimental data.The results show that slag powder concrete with low water-binder ratio and high content can reduce the formation of gypsum and ettringite,and can resist the erosion of sulfate ion solution of 20250 mg/L and below.PPR regression prediction model can achieve“dimensionality reduction and optimization”high-precision prediction of slag cement concrete flexural strength;based on PPR prediction model,the order of influence factors was calculated as follows:slag powder content>water-binder ratio>sulfate solution concentration.

关 键 词：粒化高炉矿渣粉 抗硫酸盐侵蚀 投影寻踪回归 预测 

分 类 号：TUS28[建筑科学]