煤矸石热活化性能研究及其用于建筑砂浆的制备.pdf

粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2013NO.4 试验与应用 煤矸石热活化性能研究及其用于建筑砂浆的制备 Study of Thermal Activation Properties of Coal Gangue and Its Preparation for Building Mortar 张蕾12，宋旭艳3 (1.同济大学建材研究所，上海201804；2.先进土木工程材料教育部 重点实验室，上海201804；3.苏州科技学院，苏州215011) 摘要：采用勃氏透气仪、激光粒度仪、X射线衍射(XRD)等分析方法分别对550℃、650℃、750℃、850℃和950℃ 5个活化温度所得的煤矸石进行了比表面积、粒径分布和矿物成分分析，研究了煅烧温度对煤研石矿物成分的影响机 理.结果表明：550℃和650℃煅烧的煤研石矿物分解不充分，形成的活性Si02和A山203含量少，煤研石火山灰活性低； 850℃和950℃煅烧的煤矸石，其活性S102和A1203又重新化合成新的晶体结构，煤矸石活性同样较低；750℃是煤研石的最 佳活化温度，该温度下煤研石具有最疏松的矿物结构和最高的活性SiO2和A山2O3含量，且该活化温度配制的砂浆性能最优. 关键词：煤研石；热活化；矿物成分；XRD;砂浆性能 中图分类号：TQ177.6*9文献标识码：A 文章编号：1005-8249(2013)04-0027-04 Zhang Leil.2 Song Xu yan' (1.Institute of Building Materials Tongji University Shanghai 201804 China; 2.Key Laboratory of Advanced Civil Engineering Materials of the Ministry of Education Tongji University Shanghai 201804 China;3.Suzhou University of Science and Technology Suzhou 215011 China) Abstract:The specific surface area particle size distribution and mineral ponents of coal gangue by different thermal activation tempera- ture-550℃，650℃，750℃，850℃and950℃-have been analyz d by the methods of Bertrand pemeability instrument laser particle analyzer and XRD as well as the influence mechanism of calcined temperature on the mineral ponents of coal gangue.The results show that:the minerals of coal gangue after the temperature of550℃and650℃has not been fully deposed which leads to a low content of active Si(02 and Al203 ss well as the low pozzolanic act...