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钙含量对偏高岭土/矿渣基地聚合物结构和性能的影响
作者:罗新春1 2 汪长安2 
单位:1. 景德镇陶瓷学院材料科学与工程学院 江西 景德镇 333403  2. 清华大学材料学院 新型陶瓷与精细工艺国家重点实验室 北京 100084 
关键词:地质聚合物 钙含量 抗压强度 热稳定性 
分类号:TQ174
出版年,卷(期):页码:2015,43(12):1800-1805
DOI:10.14062/j.issn.0454-5648.2015.12.21
摘要:

 以高炉矿渣(BFS)、偏高岭土(MK)、钠水玻璃和石英砂为主要原料,制备MK/BFS 基地质聚合物。通过调节偏高岭土和矿渣的比例,研究钙含量对地质聚合物物相、显微结构和抗压强度的影响,研究了材料热稳定性能。结果表明:当钙含量为15%(质量分数)时,地质聚合物的抗压强度达到93.9±2.2 MPa600 以下,材料结构保持稳定,材料的线收缩率保持在4%以内,800 时,有新相生成,并伴随较大的体积变化。

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 Metakaolin (MK)/blast furnace slag (BFS) based geopolymeric materials were prepared with MK, BFS, sodium silicateand quartz sand as the main raw materials. The effect of calcium oxide content, i.e., adjustment of the MK and BFS proportions, onthe phase composition, microstructure and compressive strength of the geopolymers was investigated. The thermal stability of thegeopolymers was analyzed by adjusting the proportion of metakaolin and blast furnace slag. The experimental results showthat thecompressive strength of the geopolymer reaches 93.88?2.16 MPa with calcium oxide content of 15% (in mass fraction). When it iscalcined at < 600 , the geopolymer remains a stable structure and the linear shrinkage of geopolymer is within 4%,, and somephases occurs with the greater volume change at > 800 .

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基金项目:
国家自然科学基金(51172119)资助。
作者简介:
第一作者:罗新春(1990—),男,硕士研究生。 通信作者:汪长安(1969—),男,博士,教授。
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