废石膏泡沫混凝土性能及影响因素  

The Performances of Waste Gypsum Foam Concrete and the Influence Factors

作　　者：裴闪闪 张耀忠 杨钱荣[1,3] 王冰 

机构地区：[1]同济大学材料科学与工程学院,上海201804 [2]上海同济建设工程质量检测站,上海200092 [3]同济大学先进土木工程材料教育部重点实验室,上海201804

出　　处：《粉煤灰综合利用》2013年第6期10-13,共4页Fly Ash Comprehensive Utilization

基　　金：国家基础发展规划"973"项目(2009CB623104);"十二五"国家科技支撑计划项目(2012BAJ20B02)

摘　　要：研究了以脱硫石膏-矿渣粉-水泥复合胶凝材料体系为胶凝材料的泡沫混凝土性能及其主要影响因素。结果表明,适当提高水胶比,有助于泡沫混凝土起泡性和稳泡性。掺加硫铝酸盐水泥和水玻璃的泡沫混凝土性能劣化,这两种材料不适合应用于泡沫混凝土制备中。掺加适量甲基纤维素、减水剂可较好地改善泡沫混凝土的性能。经优化研究可得到容重低于1000kg/m3,强度大于6MPa的脱硫石膏泡沫混凝土。This paper mainly studies on the properties of foamed concrete which uses desulfurization gypsum-ground slag-cement composite system as cementitious material and its main influence factors. The results show that, increasing ratio of water to cementitious material helps to im- prove the foamability and foam stability . Adding sulphoaluminate cement and sodium silicate into foam concrete deteriorates properties of it, which preans the two kinds of additive are not suitable to be applied to preparation of foamed concrete. However, methyl cellulose and water reduc- ing agent can effectively improve its properties. Optimized foamed concrete whose density is less than 1000kg/m3 and strength is greater than 6MPa can be acquired.

关 键 词：泡沫混凝土 起泡性 稳泡性 脱硫石膏 孔结构 

分 类 号：TU528.2[建筑科学—建筑技术科学]