固体废弃物在节能烧结类墙体材料中的应用研究

发布时间：2018-03-16 17:43

  本文选题：烧结保温空心砌块　切入点：造孔剂　出处：《西安建筑科技大学》2015年硕士论文　论文类型：学位论文

【摘要】：伴随着我国经济的迅猛发展,能源问题日益突出,节约能源已成为实现可持续发展的关键环节。08年以来我国建筑行业迎来了发展高峰,过多的高能耗建筑将使建筑能耗超越交通、工业等行业而最终居于社会能耗的首位,达到30%左右。围护结构的热工性能差是建筑物高能耗的主要原因,因此,改善围护结构的热工性能,是解决建筑物高能耗的主要途径。烧结保温空心砌块作为新型墙体材料,具有防火、与建筑物同寿命、保温性能好等优良性质,是理想的新型墙体保温材料。本文主要通过在实验室研究烧结保温空心砌块的性能,探索添加造孔剂对材料热工性能的影响,通过实验室得出的结论联合工厂实地生产29排孔加造孔剂烧结保温空心砌块,根据实际产品的力学及热工性能,分析其在建筑物节能上应用的可行性,最后将产品成功应用于示范建筑上面,满足建筑节能的标准。首先,对原料及造孔剂的物理化学性能进行分析,结果表明:新疆页岩的化学及矿物组成适宜制备烧结保温空心砌块,页岩的烧成温度范围为850~1050℃,最佳烧成温度为950℃;锯末和污泥的烧矢量大,分别达到98%和50%,适合做为造孔剂使用。其次,向页岩中加入不同比例的造孔剂制备烧结保温空心砌块,测试其抗压强度、显气孔率、体积密度和热工性能,结果表明:造孔剂掺量对于制品的性能有显著的影响。随着造孔剂掺量的增加,试样的显气孔率、干燥收缩与烧成收缩、烧矢量逐渐增加,体积密度、抗压强度逐渐减小。当锯末添量为6%时试样成型顺利,导热系数为0.1901W/(m·k),相比纯页岩下降了57.87%,在保证材料强度的前提下,添加锯末造孔剂可显著的提升了材料的保温性能;当污泥添量为15%时试样成型顺利,导热系数为0.2031 W/(m·k),相比纯页岩下降了下降了54.99%,在保证材料强度的前提下,添加污泥造孔剂可显著的提升了材料的保温性能。综合考虑两种造孔剂的性能后,优选出锯末作为前期工厂试验造孔剂。首先,针对示范生产线的实际生产情况,对生产线生产工艺进行优化调整,提高生产效率,加大产能。其次,制备出29排孔加锯末烧结页岩保温空心砌块,并测试其力学性能、砌块和砌体热工性能,结果表明:加锯末29排孔烧结页岩保温空心砌块的抗压强度等级达到MU10,符合国家标准;砌块传热系数为0.447W/(m2·K),远远低于同样规格的实心砖;砌体传热系数为0.35W/(m2·K),比纯页岩实心砖墙体的传热系数降低66.35%,比加6%锯末页岩实心砖墙体的传热系数降低27.08%,符合严寒及寒冷地区的建筑节能要求。最后,成功将29排孔加锯末烧结页岩保温空心砌块应用于严寒地区示范建筑上,实现单一材料满足建筑节能的要求。
[Abstract]:With the rapid development of China's economy, the energy problem is becoming increasingly prominent. Energy conservation has become the key link to achieve sustainable development. Since 2008, the construction industry in China has ushered in a peak of development. Too many high energy consumption buildings will make the building energy consumption exceed traffic, industry and other industries and eventually occupy the top of the social energy consumption, reaching about 30%. The thermal performance of the enclosure structure is the main reason for the high energy consumption of the building, therefore, the main reason for the high energy consumption of the building is the poor thermal performance of the enclosure structure. Improving the thermal performance of the envelope structure is the main way to solve the high energy consumption of the building. As a new type of wall material, the sintered hollow block has excellent properties such as fire resistance, same life with the building, good insulation performance, etc. It is an ideal new type of wall insulation material. This paper mainly studies the properties of sintered insulating hollow block in laboratory, and explores the effect of the addition of pore-making agent on the thermal properties of the material. The conclusion obtained from the laboratory is that 29 rows of hole additive sintering hollow block is produced in the field in the factory. According to the mechanical and thermal properties of the actual product, the feasibility of its application in building energy saving is analyzed. Finally, the product is successfully applied to the demonstration building to meet the building energy saving standards. Firstly, the physical and chemical properties of raw materials and pore-making agents are analyzed. The results show that the chemical and mineral composition of Xinjiang shale is suitable for the preparation of sintered hollow block, the firing temperature range of shale is 850 ~ 1050 鈩，

本文编号：1620979