淤泥对水泥基节能材料热性能与力学性能的影响  

Influence of Silt on Thermal and Mechanical Properties of Cement-based Energy-saving Materials

作　　者：张亚妮[1] 宋利园[1] 王晓钧[1] 周敏君[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,南京210009 [2]江苏尼高科技有限公司,常州213015

出　　处：《材料导报（纳米与新材料专辑）》2009年第1期399-402,共4页

摘　　要：应用淤泥制备一种新型水泥基节能材料，探讨了淤泥对材料热性能和力学性能的影响，分析和比较了淤泥用于制备节能胶凝材料的可行性。研究结果表明，淤泥可用于制备节能材料，淤泥的掺入能显著提高这种新型节能材料的隔热效果。当骨料掺量为20％时，淤泥取代水泥掺量由10％增加到30％的过程中，试样的热导率降低了14％，达到0．261W／（m·K）；由于外加剂的掺入为试样引入大量气孔，依据提出的导热系数的计算方法所得结果比实验测量值平均高0．065W／（m·K）。因为淤泥不具有水胶凝性，所以它的掺入导致节能材料的力学性能降低。Silt mixed with cement and aggregate can be used to prepare a new kind of energy-saving gel material, the influence of the silt on the thermal and mechanical performance of the material is discussed. Silt is suitable for energy-saving materials preparation due to its properties when the dosage of aggregate is 20%, as the silt replaced cement change from 10% to 30%,the thermal conductivity decreases 14%, comes to 0. 261 W/（m·K） . Compared to the calculated thermal conductivity value, the experimental measurements is 0. 065W/（m· K） lower, as the result of large amount of pores brought by the admixture. As the silt cannot generate hydration products to make high-intensity, the addition of silt leads to decrease of the mechanical strength of the samples.

关 键 词：淤泥 节能胶凝材料 水泥 热导率 

分 类 号：TU55[建筑科学—建筑技术科学]