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)MPa。在600℃以下,材料的微观结构保持稳定,材料的线收缩率保持在4%以内,在800℃时,有新相生成,并伴随较大的体积变化。
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 show that 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 some phasesoccurs with the greater volume change at 800 ℃.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2015年第12期1800-1805,共6页
Journal of The Chinese Ceramic Society
基金
国家自然科学基金(51172119)资助
关键词
地质聚合物
钙含量
抗压强度
热稳定性
geopolymer
calcium content
compressive strength
thermal stability
