煤气化渣黏土复合地基填料力学特性研究  

Study on Mechanical Properties of Filling Materials for Coal Gasification Slag Clay Foundation

作　　者：程臻赟 王占银 傅博 雷华 苏梦 丁楠 陈美庆 Cheng Zhenyun;Wang Zhanyin;Fu Bo;Lei Hua;Su Meng;Ding Nan;Chen Meiqing(Collage of Civil Engineering,North Minzu University,Yinchuan,Ningxia 720021;National Energy Group Ningxia Coal Industry Co.Ltd.,Yinchuan,Ningxia 750021)

机构地区：[1]北方民族大学土木工程学院,宁夏银川720021 [2]国家能源集团宁夏煤业有限责任公司,宁夏银川750021

出　　处：《江西建材》2024年第10期217-220,共4页

基　　金：宁夏回族自治区重点研发计划项目《煤化工典型固废制备绿色建材关键技术研究与工程示范》(项目编号:2023BEG02045)。

摘　　要：文中采用击实试验、固结试验和加州承载比试验研究了煤气化渣及煤气化渣黏土复合材料作为地基填料时的力学性能。结果表明,纯煤气化渣在含水率为10.1%时具有最大干密度2.12 g/cm^(3)。贯入量为5 mm时,CBR值为15.9,能够满足路基填料的强度要求。煤气化渣黏土复合地基填料中,随黏土掺量的增加,复合填料最佳含水率先减小后增大,干密度先增大后减小。最大干密度出现在黏土掺量为30%的复合填料,相应含水率和干密度分别为8.7%和2.47 g/cm^(3)。当黏土掺量为40%时,煤气化渣黏土复合地基填料承载力最大;结合三轴试验结果与CBR值,当黏土掺量为35%时,复合地基填料力学性能最佳。Compaction test,consolidation test and California load ratio test were used to study the mechanical properties of coal gasification slag and coal gasification slag clay composite as foundation fillers.The results show that the maximum dry density of pure coal gasification slag is 2.12 g/cm^(3) when the water content is 10.1%.When the penetration amount is 5 mm,the CBR value is 15.9,which can meet the strength requirements of subgrade fllers.With the increase of clay content,the optimum water content of the composite fllers decreases first and then increases,and the dry density increases first and then decreases.The highest dry density was found in the composite fller with a clay content of 30%,and the corresponding water content and dry density were 8.7%and 2.47 g/cm^(3),respectively.When the clay content is 40%,the bearing capacity of coal gasification slag clay composite foundation is the highest.Combined with the triaxial test results and CBR value,the mechanical properties of the composite foundation filler are the best when the clay content is 35%.

关 键 词：煤气化渣 黏土 击实试验 加州承载比试验 地基填料 

分 类 号：TU528[建筑科学—建筑技术科学]