蒸压粉煤灰加气混凝土复合砌块基本力学性能及其墙体应用研究

发布时间：2018-05-08 09:53

本文选题：蒸压粉煤灰加气混凝土复合砌块 + 抗压强度　；参考：《太原理工大学》2014年硕士论文

【摘要】：随着环境不断恶化,严重污染环境的工业废渣的处置已成为我国化石能源使用所面临的一个重大问题,粉煤灰作为排放量最大的工业废渣之一,提高其综合利用率十分重要。本文研究的本文蒸压粉煤灰加气混凝土复合砌块是一种新型填充墙材料,将其应用于建筑墙体,既能起到良好保温隔热作用,又有利于粉煤灰综合利用,具有节能减排效果,研究该复合砌块的基本力学性能及其墙体的应用具有十分重要的意义。蒸压粉煤灰加气混凝土复合砌块由蒸压粉煤灰加气混凝土砌块与聚苯板复合而成,具有轻质、保温隔热等优点,并且耐久性与耐火性良好。蒸压粉煤灰加气混凝土复合砌块墙体自保温系统与一般的外墙外保温系统相比,其墙体设计、施工过程和工程造价均较少,建筑外墙施工难度低,是一种既经济实用,又符合建筑节能保温要求的保温系统。基于上述原因,在山西省建设厅资助下,本文研究了蒸压粉煤灰加气混凝土复合砌块的复合方式,对该复合砌块基本力学性能进行了试验研究,并结合实例,建立采用蒸压粉煤灰加气混凝土复合砌块填充墙的玻化微珠保温混凝土框架结构建筑模型,对其进行了理论与软件模拟分析。本文研究的具体工作有以下几方面： (1)通过对国内外学者研制出的复合砌块进行文献研究,选择粘贴的方式将蒸压粉煤灰加气混凝土与聚苯板复合。通过对不同组合方式下蒸压粉煤灰加气混凝土复合砌块墙体传热系数进行对比,得出最适合蒸压粉煤灰加气混凝土砌块的组合方式,并对复合砌块的原材料及各组成部分进行了分析。 (2)通过对蒸压粉煤灰加气混凝土复合砌块的内叶块抗压强度、聚苯板压缩性能、沿块体厚度方向连接强度和复合砌块抗压强度进行试验,得出蒸压粉煤灰加气混凝土复合砌块的内叶块抗压强度、聚苯板压缩强度、沿块体厚度方向连接强度和复合砌块抗压强度四项性能指标均能够满足相关规定。复合砌块抗压强度略高于内叶块抗压强度,设计时可以内叶块强度等级代表复合砌块强度等级。 (3)基于保温节能效果最优化原则,将蒸压粉煤灰加气混凝土复合砌块填充墙用于玻化微珠保温混凝土框架结构,依据能耗理论,对其进行能耗计算,得出建筑物耗热量指标为11.022W/m2,满足太原市建筑节能65%目标。基于DeST-h软件针对太原市与大同市两个气候区,建立两个完全相同的建筑模型,通过模拟分析得出整栋建筑的能耗情况。结果表明该结构体系能够满足山西省寒冷地区四层及以上建筑节能65%目标。 (4)蒸压粉煤灰加气混凝土复合砌块墙体自保温系统具有自重轻、整体性强、保温性能佳、综合性强的优点,在技术上具有先进性。通过比较该系统与EPS板保温系统、XPS板保温系统、玻化微珠保温砂浆保温系统的经济静态、动态指标,可知蒸压粉煤灰加气混凝土复合砌块墙体自保温系统造价最低,在经济上具有优越性。
[Abstract]:With the worsening environment, the disposal of industrial waste residue, which seriously pollutes the environment, has become a major problem in the use of fossil energy in China. As one of the largest industrial waste residues, fly ash is very important to improve its comprehensive utilization. This paper is a new type of autoclaved fly ash aerated concrete composite block. Filling wall material and applying it to building wall can not only play a good role in heat insulation and heat insulation, but also benefit the comprehensive utilization of fly ash. It has the effect of energy saving and emission reduction. It is of great significance to study the basic mechanical properties of the composite block and the application of the wall.
The autoclaved fly ash aerated concrete composite block is composed of autoclaved fly ash and aerated concrete block and polystyrene board. It has the advantages of light quality, heat insulation, heat insulation and so on, and has good durability and fire resistance. The wall design of the autoclave of autoclaved fly ash aerated concrete composite masonry wall is compared with the general external wall insulation system. The construction process and engineering cost are relatively low, and the building exterior wall construction is low in difficulty. It is an economical and practical thermal insulation system which conforms to the requirements of building energy conservation and thermal insulation.
Based on the above reasons, under the support of the Construction Department of Shanxi Province, the composite method of autoclaved fly ash and aerated concrete composite block is studied in this paper. The basic mechanical properties of the composite block are studied, and a glass bead insulation concrete frame with autoclaved fly ash and aerated concrete composite block filling wall is established in combination with an example. A building model is built, and its theoretical and software simulation analysis is carried out.
The specific work of this paper has the following aspects:
(1) through the literature study of the composite masonry developed by scholars at home and abroad, the autoclaved fly ash aerated concrete and polystyrene board are mixed with the method of stickup, and the most suitable autoclaved fly ash aerated concrete block is obtained by comparing the heat transfer coefficient of the composite masonry wall with autoclaved fly ash and aerated concrete under different combinations. The combined raw materials and components of the composite block are analyzed.
(2) through the compression strength of the inner leaf block of the autoclaved fly ash reinforced concrete composite block, the compressive strength of the polystyrene plate, the strength of the connection strength along the thickness of the block and the compressive strength of the composite block, the compressive strength of the inner leaf block of the autoclaved fly ash reinforced concrete composite block, the compressive strength of the polystyrene plate, and the strong connection along the thickness of the block body are obtained. The four performance indexes of the degree and the compressive strength of the composite block can meet the relevant regulations. The compressive strength of the composite block is slightly higher than the compressive strength of the inner block, and the strength grade of the inner block can represent the strength grade of the composite block.
(3) based on the optimization principle of heat preservation and energy saving effect, the autoclaved fly ash and aerated concrete composite masonry filling wall is used in the glass microbead insulation concrete frame structure. According to the energy consumption theory, the energy consumption of the building is calculated. The energy consumption index of the building is 11.022W/m2, which meets the 65% target of building energy conservation in Taiyuan. Based on the DeST-h software, it is aimed at Taiyuan. Two identical building models are established in both the city and Datong City, and the energy consumption of the whole building is obtained through simulation analysis. The results show that the structure system can meet the 65% goals of building energy saving of four layers and above in the cold region of Shanxi province.
(4) the autoclaved fly ash aerated concrete composite block wall self insulation system has the advantages of light self weight, strong integrity, good insulation performance and comprehensive and strong advantages. It is advanced in technology. By comparing the system and EPS plate insulation system, XPS plate insulation system, glass microbead insulation mortar insulation system, the economic static, dynamic index, steaming Compressed fly ash aerated concrete composite block wall self insulation system has the lowest cost and economic superiority.

【学位授予单位】：太原理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU522.3

【参考文献】