高流态灌浆料的功能设计及微区膨胀控制研究  

Study on the Functional Design and Expansion Control of High Flowability Cementitious Grout

作　　者：郭一锋[1,2] 李光球[1,2] 陈晓龙[1,2] 

机构地区：[1]苏州市建筑科学研究院有限公司,苏州215129 [2]苏州市姑苏新型建材有限公司,江苏省高性能建筑材料工程技术研究中心,苏州215132

出　　处：《硅酸盐通报》2014年第10期2761-2766,共6页Bulletin of the Chinese Ceramic Society

基　　金：江苏省建设系统科技项目(201307100001)

摘　　要：通过整体化的功能设计,研究了各原料的最优配合比,系统展开了灌浆料的流动性能及其45 min保留率、24h内的分时膨胀率、材料各龄期强度性能等指标的研究。分析对比了不同膨胀机理下的膨胀源在较长时间下对试件体积稳定性能的保持能力。结果表明,当水泥为32%、粉煤灰7%、硅粉1%、复配膨胀剂1.5%时,辅以微量的其他改性剂,灌浆料的3 h膨胀率为0.42%,24 h与3 h膨胀率差为0.11%,各龄期强度超过国家标准40%以上,90 d内的体积形变为0.007%。Studied the integration design of cementitious grout（ CG） and the optimal mixture ratio of each raw material. Systematically studied the indexes of CG about the initial fluidity,the retention 45 minutes later,period expansion rate in 24 h,compressive strength at 1 d,3 d and 28 d. The ability of expender to keep the volume stability within a long time had been analyzed. And multiple expanders with different expansion mechanisms had been contrasted. All the performance of CG could meet the requirements of code for application technique of cementitious grout when P·O52·5,FA,SF,GE and PS were 32%,7%,1%,2% and 0. 18%,respectively. The 90 d volume deformation was 0. 007%.

关 键 词：灌浆材料 膨胀 抗压强度 收缩补偿 流动度及保留率 

分 类 号：TQ172[化学工程—水泥工业]