Al^3＋对碱硅酸反应产物的影响  

Effect of Al^(3+) on the Products of Alkali-Silica Reaction

作　　者：封孝信[1] 胡晨光[1] 王晓燕[1] 蔡基伟[1] 

机构地区：[1]河北理工大学材料学院,河北省无机非金属材料重点实验室,唐山063009

出　　处：《武汉理工大学学报》2009年第7期131-133,共3页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(50772029)

摘　　要：以具有碱活性的天然碎石和石英玻璃为活性骨料,分别浸泡在含与不含Al(NO3)3的模拟孔溶液及含与不含Al(NO3)3的NaOH溶液中。用扫描电子显微镜观察了产物的形貌,用能谱仪分析了产物的成分,并用X射线衍射仪测定了产物的矿物成分。结果显示,Al3+的存在,使碱硅酸反应的产物由凝胶向晶体转化,并有沸石类物质产生。Crushed natural limestone with alkali-silica reactivity and quartz glass were used as alkali active aggregates, and immersed in analogue pore solution and NaOH solution with and without Al （NO3）3 separately. The reaction products of alkali and aggregates were observed by means of scanning electron microscopy （SEM）, the composition of the products were analyzed by means of energy dispersive spectrometer （EDS）, and the minerals in products were detected with X-ray diffraction （XRD）. The results show that when Al^3＋ exists, the products of ASR tend to be transformed from gel to crystal and some of them are zeolite-type minerals.

关 键 词：碱硅酸反应(ASR) Al(NO3)3 反应产物 

分 类 号：TU528.01[建筑科学—建筑技术科学]