地聚合物混凝土界面过渡区粘结强度研究  

Study on ITZ bond strength of geopolymer concrete

作　　者：李克亮[1,2] 马毅 陈爱玖 汪志昊[1,2] 马军涛 龚勃旭[1] LI Keliang;MA Yi;CHEN Aijiu;WANG Zhihao;MA Juntao;GONG Boxu(North China University of Water Resources and Electric Power,Zhengzhou 450045,China;Waste Utilization Technology and Equipment Engineering Research Center of Henan,Zhengzhou 450045,China;Zhengzhou University of Industrial Technology,Zhengzhou 451150,China)

机构地区：[1]华北水利水电大学,河南郑州450045 [2]河南省废物利用技术与装备工程研究中心,河南郑州450045 [3]郑州工业应用技术学院,河南郑州451150

出　　处：《新型建筑材料》2020年第9期139-142,共4页New Building Materials

基　　金：河南省自然科学基金项目(182300410259)。

摘　　要：试验研究了水胶比、矿渣粉与粉煤灰质量比、水玻璃模数、Na2O含量、骨料种类等5个因素对地聚合物混凝土界面过渡区(ITZ)粘结强度的影响规律,并分析了干湿循环作用下的粘结强度劣化程度。研究表明:随着水胶比、矿渣粉与粉煤灰质量比、水玻璃模数、Na2O含量的增加,ITZ粘结强度先逐渐提高至最大值,然后逐渐降低;当使用大理石作为骨料时,所有龄期的ITZ粘结强度均高于使用花岗岩作为骨料时的粘结强度;以自来水为介质的干湿循环试验中,随着干湿循环次数的增加,ITZ粘结强度不断降低。A series of researches on bond strength of interfacial transition zone(ITZ) in geopolymer concrete were carried out.The influence rules on ITZ bond strength affected by 5 factors were investigated. The factors included the mass ratio of water to binder the mass ratio of granulated blast furnace slag powder to fly ash,modulus of water glass,Na2 O dosage and aggregate type.Deterioration degree of ITZ bond strength was analyzed at the condition of dry-wet cycles. Bond strengths of ITZ increase firstly,and then decrease,when the mass ratio of water to binder,the mass ratio of slag powder to fly ash,modulus of water glass and Na2 O dosage increase. When marble aggregate is used,the bond strength at all ages is higher than that of ITZ with granite aggregate. In dry-wet cycle test using tap water,with the increase of dry-wet cycle times,bond strengths continuously decrease.

关 键 词：地聚合物混凝土 界面过渡区 粘结强度 干湿循环 

分 类 号：TU528[建筑科学—建筑技术科学]