装配式节能复合墙板的性能研究

发布时间：2019-05-11 01:28

【摘要】：摘要：本文研究开发的节能复合墙板是一种夹芯复合墙板,主要是以轻骨料混凝土为面层和以保温砂浆材料为芯层共同组成。本文主要工作有以下点： (1)通过有限元软件对结构层薄板进行抗弯承载性能模拟分析；研究探讨不同构造形式下复合墙板的热工指标变化规律。确定节能墙板结构层和保温层所需要的强度性能指标和热工性能指标。 (2)通过正交试验得到全轻混凝土材料最优配合比,按照最优配合比可以配制配置出强度10.OMpa,导热系数为0.303W/(mk)的全轻混凝土材料。 (3)将憎水剂稀释到质量浓度为1%的溶液,按照憎水剂溶液与玻化微珠质量比为1：1的比例对玻化微珠进行喷涂改性处理,用改性后的玻化微珠制备出的全轻混凝土,其28天抗压强度可以达到12.8Mpa,导热系数为0.302W/(mk)。 (4)对保温砂浆各成分进行单因素实验分析,得到各组分最优掺量。按照最优掺量确定的最优配合比可以制备出抗压强度达到0.68Mpa,导热系数达到0.081W/(mk)的保温砂浆材料。 (5)应用节能软件PBECA对长沙普通居民住宅进行能耗模拟。按照现在可以做到的围护结构水平,在其他条件均相同的情况下,一幢外墙采用200厚节能复合墙板住宅与一幢采用传统的240厚粘土砖住宅相比,可以在此基础上再节能23.8%。图29幅,表31个,参考文献71篇
[Abstract]:Abstract: the energy-saving composite wallboard studied and developed in this paper is a kind of sandwich composite wallboard, which is mainly composed of lightweight aggregate concrete as surface layer and thermal insulation mortar material as core layer. The main work of this paper is as follows: (1) the bending bearing capacity of structural thin plate is simulated and analyzed by finite element software, and the variation law of thermal index of composite wallboard under different structural forms is studied and discussed. The strength performance index and thermal performance index of energy saving wallboard structure layer and insulation layer are determined. (2) the optimal mix proportion of all light concrete materials can be obtained by orthogonal test. According to the optimal mix proportion, the all light concrete materials with strength of 10.ompa and thermal conductivity of 0.303W/ (mk) can be prepared. (3) the hydrophobic agent was diluted to a solution with a mass concentration of 1%. The vitrified beads were sprayed and modified according to the mass ratio of the hydrophobic agent solution to the vitrified beads, and the all-light concrete was prepared by using the modified vitrified beads. The compressive strength can reach 12.8MPA in 28 days, and the thermal conductivity is 0.302W/ (mk). (4) the single factor experimental analysis of each component of thermal insulation mortar is carried out, and the optimal content of each component is obtained. The thermal insulation mortar material with compressive strength of 0.68 MPA and thermal conductivity of 0.081W/ (mk) can be prepared according to the optimal mixture ratio determined by the optimal content. (5) Energy consumption simulation of Changsha ordinary residential buildings is carried out by using energy saving software PBECA. According to the level of enclosure structure that can now be achieved, under the same other conditions, a 200-thickness energy-saving composite wallboard house is compared with a traditional 240-thickness clay brick house. On this basis, it can save 23.8% energy. Figure 29, table 31, references 71
【学位授予单位】：中南大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU551

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