【作者】 梁树力；

【导师】 楚珑晟；

【作者基本信息】 西南交通大学 ， 材料科学与工程， 2012， 硕士

【摘要】 采用硅酸盐和常见的建筑垃圾作为主要原料,通过原位组装的方法,研制出新一代轻质高强、低成本的基于建筑垃圾体系的硅酸盐保温节能材料。为优化建筑垃圾体系硅酸盐多孔保温节能材料的综合性能,本文研究了影响其保温性能的因素以及不同材料组合、材料结构与力学性能之间的关系。针对保温性能,探讨了硅酸盐基保温节能材料在不同容重、不同孔径大小条件下导热系数的变化规律；针对力学性能,讨论了胶凝材料、填充材料、建筑垃圾、增强纤维以及外加剂等因素对其抗压强度的影响,并建立了多孔保温材料的孔结构模型。本文结合民用建筑保温节能需要的现状,把保温性能和力学性能结合起来考虑,得出了建筑垃圾体系保温节能材料的优化配比：采用原位组装技术作为制备方法,快硬硫铝酸盐水泥与普通硅酸盐水泥配比为4：1,粉煤灰掺量占粉体材料的6%,表面活性剂掺量占粉体材料质量分数的0.7%,采用长度为19mm的PP纤维(聚丙烯纤维)作为增强材料,PP纤维掺量占粉体材料质量的0.5%。在这一条件下制备的硅酸盐基多孔保温节能材料,经过权威部门测试,平均导热系数达到0.067W／(m·K),抗压强度为0.65MPa,对于处理国内大量的建筑垃圾以及推进我国建筑节能进程具有重要意义。更多还原

【Abstract】 Silicate and common construction waste were adopted as main materials, a new generation of lightweight, high strength and low-cost silicate-based insulation and energy-saving materials which based on construction waste system was developed through the way of in-situ self-assembly. For optimizing the synthesis performance of silicate insulation and energy-saving materials based on construction waste system, influence factors of its thermal property, relationship between different materials, material structure and mechanical property were studied. Aiming at thermal property, the variation regularity of thermal conductivity under the conditions of different densities, different pore sizes of silicate-based insulation and energy-saving materials; to the mechanical property, the influence of cementing materials, filler materials, construction wastes, reinforcing fibers and admixtures on its compressive strength was discussed, and the model of porous materials’pore structure is established.According to the reality of civilian building energy conservation technology demands, this thesis combined thermal property and mechanical property together, optimum ratio of heat preservation material of construction waste system is obtained:adopting in-situ self-assembly technology as preparation method, ration for rapid-hardening sulphoaluminate cement and silicate cement is4:1, content of fly ash is6%, content of surfactant is0.7%, use19mm PP fiber as reinforcing material, content of PP fiber is0.5%. Under this condition, the silicate-based insulation and energy-saving materials manufactured average thermal conductivity is0.067W/(m· K), compressive strength is0.65MPa, it has great value in dealing with so many domestic construction wastes and pushing process of our country’s building energy conservation.更多还原