摘要
在采用偏高岭土碱激发制备地质聚合物的基础上,优化配合比,为制备出早期强度较高的地质聚合物。以NaOH和水玻璃为复合碱激发剂,研究水玻璃模数、碱当量、液固比以及养护条件对偏高岭土地质聚合物抗压强度的影响。试验结果表明,偏高岭土130g、水玻璃模数1.0、碱当量11%、液固比0.31、标准养护时,制备的偏高岭土地质聚合物3d抗压强度最高,达到53.7MPa。另外,在初始液固比为0.31时,不同模数下的地质聚合物强度都达到最佳。本文为偏高岭土地质聚合物的制备提供了有效的借鉴。
The paper based on the preparation of geopolymer by alkali activation of metakaolin,the mix proprtion was optimized to prepare geopolymer with high early strength,metakaolingeopolymer was prepared through NaOH with sodium silicate alkali activation under modulus of sodium silicate,different alkali content,liquid-solid ratio as well as curing methods.The compressive strength of these samples were tested.The results indicate that the maximum strength of 53.7 MPa was obtained when m etakaolin reached to 130g,modulus of sodium silicate reached to 1.0,alkali content reached to 11%liquid-solid ratio reached to 0.31,meanwhile the standard curing should be used at third days of testing.Besides,when the initial liquid-solid ratio was 0.31,the strength of geopolymer at different modulus should be the best.This paper provided an effective reference for the preparation of metakaolin geopolymer.
作者
易鸣
吴大志
夏琳玲
YI Ming;WU Dazhi;XIA Linling(School of Civil Engineering and Architecture,Zhejiang Sci-Tech University,HangZhou 310018,China)
出处
《粉煤灰综合利用》
CAS
2019年第6期31-35,71,共6页
Fly Ash Comprehensive Utilization
关键词
偏高岭土
碱当量
液固比
抗压强度
metakaolin
alkali content
liquid-solid ratio
compressive strength
作者简介
第一作者:易鸣(1994-),男,研究生,主要从事偏高岭土基地质聚合物修补材料方面的研究;通讯作者:吴大志,男,博士,教授,主要从事软土地基处理技术与地基基础动力相互作用的研究,E-mail:wudz@zstu.edu.cn。
