摘要
采用X射线衍射法以及TG/DSC综合热分析研究了火山渣-Ca(OH)_(2)-H_(2)O系统中的火山灰反应。结果表明,在火山渣-Ca(OH)_(2)-H_(2)O系统中,火山渣中的活性Al2O3与Ca(OH)_(2)发生反应生成了新的结晶相物质水化铝酸四钙。随着反应龄期的延长,火山渣-Ca(OH)_(2)-H_(2)O系统中Ca(OH)_(2)含量在不断下降,反应产物水化铝酸四钙的数量在不断上升。90 d龄期之前,Ca(OH)_(2)含量下降的幅度较小,180 d龄期之后Ca(OH)_(2)含量的下降的幅度较大。
Pozzolanic reaction in system scoria-Ca(OH)_(2)-H_(2)O was researched by X-ray diffraction and TG/DSC.The results show that tetra calcium aluminate hydrate formed due to the reaction of active Al2O3 and Ca(OH)_(2).With the increase of reaction ages,the Ca(OH)_(2) content reduced and the amount of tetra calcium aluminate hydrate increased in system scoria-Ca(OH)_(2)-H_(2)O.The content of Ca(OH)_(2) decreased slightly before the age of 90 days while the content of Ca(OH)_(2) decreased significantly after the age of 180 days.
作者
董刚
任雪红
张文生
叶家元
DONG Gang;REN Xuehong;ZHANG Wensheng;YE Jiayuan(Research Institute of Cement&New Building Materials,China Building Materials Academy,Beijing 100024,China;State Key Laboratory of Green Building Materials,Beijing 100024,China)
出处
《混凝土》
CAS
北大核心
2021年第7期57-59,64,共4页
Concrete
基金
国家重点研发计划课题“利用火山灰渣制备绿色建筑材料关键技术研究与应用”(2016YFC0701002)。
