纤维对偏高岭土基地聚物开裂性能的影响  

Influence of Fiber on Cracking Performance of Metakaolin-based Geopolymer Material

作　　者：李相国[1] 段超群[1] 马保国[1] 黄健[1] 赵子强[1] 殷海波[1] 

机构地区：[1]武汉理工大学硅酸盐建筑材料国家重点实验室,武汉430070

出　　处：《武汉理工大学学报》2013年第6期7-12,共6页Journal of Wuhan University of Technology

基　　金：国家"十二五"科技攻关计划(2011BAJ04B02)

摘　　要：研究了不同纤维参数对偏高岭土基地质聚合物开裂性能的影响,采用裂缝宽度和裂缝面积两个性能指标分析研究了纤维种类、纤维复掺、纤维掺量、纤维长径比、纤维截面形状对偏高岭土基地质聚合物开裂性能的影响。研究表明:碳纤维的抗裂性能优于耐碱玻璃纤维、矿物纤维和聚丙烯纤维;耐碱玻璃纤维与矿物纤维的复掺性能优于其他两组复掺;聚丙烯纤维的抗裂性能随掺量的增大而逐渐提升,在掺量大于体积比为0.15%时,抗裂性能增幅较缓;长度为18mm的聚丙烯纤维优于12mm和6mm的纤维;截面形状为三叶形的聚丙烯纤维抗裂性能优于截面形状为三角形和圆形的纤维。This paper studies the effects of different fiber parameters on cracking performance of metakaolin-based geopolymer material. Crack width and crack area are applied to analyze the effects of fiber type, fiber mixing addition, fiber volume fraction, fiber length-diameter ratio, fiber cross-sectional shape on cracking performance of metakaolin-based geopolymer material. The research shows that carbon fiber anti-cracking performance is better than that of alkali-resistant glass fiber, mineral fiber and polypropylene fiber; Cracking resistance of alkali glass fiber and mineral fiber mixed is better than that of other two groups mixed ; Crack resistance of polypropylene fiber gradually increases along with the increasing of volume of addition. The crack resistance increases slightly when the volume of addition exceeds volume ratio of 0. 15% ; Length of 18 mm of the polypropylene fiber is better than that of 12 mm and 6 mm; The crack resistance of polypropylene fiber with trilobal sectional shape is superior to that with triangle sectional shape and circular sectional shape.

关 键 词：偏高岭土基地质聚合物 纤维参数 抗裂性能 裂缝宽度 裂缝面积 

分 类 号：TU564.5[建筑科学—建筑技术科学]