淤泥基引气节能材料的研究  

Research on Sediment-Based Air-Entraining Energy-Saving Materials

作　　者：王晓钧[1] 张亚妮[1] 朱文文[1] 吉玉峰[1] 马德功[2] 

机构地区：[1]南京工业大学材料科学与工程学院,江苏南京210009 [2]江苏尼高科技有限公司,江苏常州213015

出　　处：《建筑材料学报》2010年第5期682-686,共5页Journal of Building Materials

基　　金：江苏省无机及其复合新材料重点实验室基金资助项目(NGC200806)

摘　　要：采用十二烷基硫酸钠制备淤泥基引气节能材料，通过L16（4^3）正交试验方法研究了引气剂掺量、水胶比和水泥／淤泥质量比这3个因素对材料力学性能和表观密度的影响；分析了引气剂掺量对材料导热系数的影响；由表观密度计算材料的孔隙率，推导材料的导热系数理论值，并将其与实测值进行比较．结果表明：在引气剂掺量为0．03％（质量分数），水胶比为0．60～0．65（质量比），水泥／淤泥质量比为0．5的条件下，材料可得到最佳的力学性能和热性能．孔隙率计算方法可用于淤泥基引气节能建筑材料的孔隙率与导热系数预测，根据理论孔隙率推算得到的导热系数与实测值的平均偏差为0．022W／（m·K）．The sediment-based air-entraining energy-saving material was prepared with sodium lauryl sulfate. By means of the L16（4^3） orthogonal experiment, the influence of air entraining agent content, waterbinder ratios and cement-sediment ratio on the mechanical performance and the apparent density of the material was investigated. The relation between air entraining agent content and thermal conductivity of the material was also studied. The porosity of the material was obtained through the apparent density, and the comparison of the actual value with the theoretical value of thermal conductivity was made. The results show that as 0.03%（by mass） of the air entraining agent is added with water-binder ratios of 0.60-0.65 and the cement-sediment ratio of 0.5, the material achieves the best mechanical properties and thermal per formance. The algorithmic method applied for porosity counting is suitable for the sediment-based energy saving building materials, and there is a difference of 0. 022 W/（m · K） between the theoretical value （de rived from the porosity）and the experiment determined value of thermal conductivity.

关 键 词：淤泥 引气剂 节能 孔隙率 导热系数 

分 类 号：TU55[建筑科学—建筑技术科学]