水泥与固化剂稳定工业副产石膏试验研究  

Experimental Study on Cement and Curing Agent Stabilization of By⁃product Gypsum

作　　者：王菲华 裴建松 郑炳锋 黄兰可 周媛 朱祥勇 王军 WANG Feihua;PEI Jiansong;ZHENG Bingfeng;HUANG Lanke;ZHOU Yuan;ZHU Xiangyong;WANG Jun(Nanjing Jiangbei New Area Management Committee Construction and Transportation Bureau,Nanjing 210031,China;JSTI Group Co.,Ltd.,Nanjing 211112,China;National Engineering Research Center for New Road Materials,Nanjing 211112,China;Southeast University,Nanjing 211189,China;Nanjing Jiangbei New Area Public Holding Group Co.,Ltd.,Nanjing 210044,China;Nanjing Jiangbei Eco-environmental Science and Technology Park Co.,Ltd.,Nanjing 210032,China)

机构地区：[1]南京江北新区管理委员会建设与交通局,南京210031 [2]苏交科集团股份有限公司,南京211112 [3]新型道路材料国家工程研究中心,南京211112 [4]东南大学,南京211189 [5]南京江北新区公用控股集团有限公司,南京210044 [6]南京江北生态环境科技园有限公司,南京210032

出　　处：《现代交通技术》2024年第5期20-24,30,共6页Modern Transportation Technology

基　　金：江苏省交通运输科技与成果转化项目(2022Z02)。

摘　　要：为研究工业副产石膏用于路面基层或底基层的可行性,通过固化剂、水泥、石灰与工业副产石膏单掺或组合的形式设计配合比。固化剂、水泥、石灰的掺量各选取4个水平,采用正交表进行配合比设计,共计16组。通过击实试验确定各组的最佳含水率和最大干密度,通过7 d无侧限抗压强度试验确定最适宜的掺量,采用极差分析和方差分析等数理统计方法分析各因素水平对工业副产石膏材料强度的影响。结果表明,在试验掺量范围内,各因素对材料强度的影响大小为固化剂>水泥>石灰,根据公路基层7 d无侧限抗压强度要求,推荐水泥掺量6%,固化剂掺量0.3 L/m^(3)。基于固化剂与水泥固化技术,提出工业副产石膏应用于路面基层或底基层的方案,为工业副产石膏用于公路工程提供参考。In order to study the feasibility of using by⁃product gypsum for pavement base or subbase courses,the proportion of curing agent,cement,lime and by⁃product gypsum by single admixture or combination is designed.The dosages of cu⁃ring agent content,cement content and lime content are selected 4 levels respectively,the proportion design is carried out by orthogonal table with 16 groups in total.The optimal moisture content and maximum dry density of each group are determined by compaction test,the most suitable contents are determined by 7⁃day unconfined compression strength test.The effects of va⁃rious factor levels on the strength of by⁃product gypsum materials are analyzed by range analysis and variance analysis.The re⁃sults show that within the selected experimental dosage range,the influence of each factor on the strength of by⁃product gyp⁃sum materials is as follows:curing agent>cement>lime.According to the 7⁃day unconfined compression strength requirements of highway base course,the recommended cement dosage is 6%and curing dosage is 0.3 L/m^(3).Based on the polymer and ce⁃ment solidification technology,the scheme of using by⁃product gypsum for pavement base or subbase courses is put forward,which can provide a reference for the application of by⁃product gypsum in highway engineering.

关 键 词：正交试验 工业副产石膏 路面底基层 无侧限抗压强度 方差分析 极差分析 

分 类 号：U416.25[交通运输工程—道路与铁道工程]