含水率对非承重ALC外墙板基本性能影响的试验研究

发布时间：2018-03-21 16:48

本文选题：蒸压加气混凝土　切入点：外墙板　出处：《郑州大学》2015年硕士论文　论文类型：学位论文

【摘要】：蒸压加气混凝土(autoclaved aerated lightweight concrete)作为一种新型墙体材料,由于其在轻质、防火、易于施工、经济性等方面较为突出而备受关注,但是在作为外墙板的实际应用过程中,多孔、吸水快的特征对外墙板的结构性能、保温性能影响较大并且缺乏相关方面的系统研究等原因限制了非承重ALC外墙板的应用,因此有必要对“含水率对非承重ALC外墙板基本性能的影响”进行深入的、系统的研究。通过对不同含水率状态下ALC砌块的力学性能、ALC板的保温性能指标的研究,提出了针对非承重ALC外墙板的结构性能、保温性能的研究,并且在材料的力学性能、保温性能的基础上建立ANSYS结构性能分析模型、保温性能理论分析模型,综合结构性能、保温性能确定合理板厚,为非承重ALC外墙板的利用提供参考。本文的研究工作主要包括以下几个方面:说明了本文的研究背景和选题意义;阐述了非承重ALC外墙板的利用研究现状,并指出了目前应用研究中存在的主要问题;对非承重ALC外墙板试件的材料进行了不同含水率下的力学基本性能试验(抗压强度试验、劈裂抗拉强度、静力受压弹性模量)和保温性能试验(导热系数、热阻),分析了含水率对力学基本性能和保温性能的影响;通过ALC材料的基本性能试验研究不同含水率下的非承重ALC外墙板的结构性能和保温性能,并通过ANSYS14.0分析模拟不同板厚的板的结构性能;通过结构性能和保温性能试验结果和有限元分析结果确定非承重ALC外墙板的合理板厚。
[Abstract]:Autoclaved aerated lightweight concrete (autoclaved aerated concrete), as a new type of wall material, has attracted much attention because of its light weight, fire resistance, ease of construction, economy and so on, but it is porous in the practical application of outer wall. The structural properties of the external wall panels with fast water absorption, the thermal insulation performance and the lack of systematic research on the related aspects restrict the application of the non-load-bearing ALC outer wall panels. Therefore, it is necessary to make a deep and systematic study on the effect of moisture content on the basic properties of non-load-bearing ALC outer wall panels. Through the study on the mechanical properties of ALC blocks under different moisture content and the thermal insulation performance index of ALC panels, The structural properties and thermal insulation properties of non-load-bearing ALC outer wall panels are studied. On the basis of the mechanical properties and thermal insulation properties of the materials, the structural performance analysis model of ANSYS, the theoretical analysis model of thermal insulation performance and the comprehensive structural properties are established. The heat preservation property determines the reasonable board thickness, provides the reference for the use of the non-load-bearing ALC outer wall panel. The research work of this paper mainly includes the following aspects: explain the research background of this paper and the significance of selecting the topic; In this paper, the present situation of the application of non-load-bearing ALC outer wall panel is described, and the main problems in the application research are pointed out, and the basic mechanical properties (compressive strength test) of the non-load-bearing ALC outer wall panel are tested under different moisture content. Splitting tensile strength, static compressive elastic modulus) and thermal insulation performance test (thermal conductivity, thermal resistance, analysis of moisture content on the mechanical properties and thermal insulation properties; The structural properties and thermal insulation properties of non-load-bearing ALC outer wall panels with different moisture content were studied by the basic performance tests of ALC materials, and the structural properties of the panels with different thickness were simulated by ANSYS14.0 analysis. The reasonable plate thickness of the non-load-bearing ALC outer wall is determined by the test results of structural performance and thermal insulation performance and the finite element analysis results.
【学位授予单位】：郑州大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU528

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