基于全寿命期的泡沫混凝土墙体评价分析

发布时间：2019-04-24 09:17

【摘要】：随着绿色建筑的快速发展,对建筑物的全寿命期评价已经成为衡量建筑节能减排的重要手段和建筑方案选取的参考依据。以建筑节能墙体为研究对象,采用全寿命期评价分析的基本方法,对泡沫混凝土墙体的生产材料、生产工艺和施工过程进行了详细的研究分析,采用全寿命期分析软件eBalance对泡沫混凝土墙体进行计算和敏感度分析。结果表明:硅酸盐水泥是造成酸化效应、碳排放、富营养化、全球变暖潜质和氮氧化合物的主要因素过程;水泥板是造成COD、NH3-N指标的主要材料;薄壁型钢卷材虽然在生产中使用量很少,但也对酸化效应、化学需氧量、富营养化、氨氮、氮氧化合物指标有显著影响。为对比各类墙体的资源能源消耗和环境影响,选取以岩棉板、聚苯板、聚氨酯保温板、泡沫混凝土保温板、现浇泡沫混凝土等为保温材料的外墙外保温墙体,在墙体传热系数相同的情况下,根据相关规范构造要求和建筑工程消耗量定额,确定从原材料到墙体使用过程的资源能源消耗。通过数据采集、软件分析得出这五种墙体全寿命期的碳排放、综合能源消耗、全球变暖潜质、酸化效应、化学需氧量等指标,最后以综合节能减排指标为对比依据。结果表明:岩棉板蒸压加气混凝土砌块墙体综合节能减排指标最差,其次是聚氨酯保温板墙体,再次是聚苯板墙体,然后是泡沫混凝土保温板墙体,现浇泡沫混凝土墙体对环境影响最小。
[Abstract]:With the rapid development of green buildings, the life cycle evaluation of buildings has become an important measure of building energy saving and emission reduction, and the reference basis for the selection of building schemes. Taking the building energy-saving wall as the research object, the production materials, production technology and construction process of foam concrete wall are studied and analyzed in detail by using the basic method of life-cycle evaluation and analysis. The life cycle analysis software eBalance was used to calculate and analyze the sensitivity of foamed concrete wall. The results show that Portland cement is the main factor process of acidizing, carbon emission, eutrophication, global warming potential and nitrogen and oxygen compounds, cement board is the main material of COD,NH3-N index. Although the use of thin-walled steel coil in production is very small, it also has a significant effect on acidizing effect, chemical oxygen demand, eutrophication, ammonia-nitrogen and nitrogen-oxygen compound indexes. In order to compare the resource and energy consumption and environmental impact of all kinds of walls, the external insulation wall with rock cotton board, polybenzene board, polyurethane insulation board, foam concrete insulation board and cast-in-place foam concrete as insulation materials was selected, which is composed of rock cotton board, polybenzene board, polyurethane insulation board, foam concrete insulation board, etc. When the heat transfer coefficient of the wall is the same, the energy consumption from the raw material to the wall is determined according to the construction requirements of the relevant codes and the consumption quota of the construction project. Through data collection and software analysis, the carbon emissions, comprehensive energy consumption, global warming potential, acidification effect, chemical oxygen demand and other indexes of the five kinds of walls during their lifetime are obtained. Finally, the comprehensive energy saving and emission reduction indexes are used as the comparison basis. The results show that the comprehensive energy saving and emission reduction index of rock-cotton board autoclaved aerated concrete block wall is the worst, followed by polyurethane insulation board wall, polystyrene board wall, and foam concrete insulation board wall, and then the foam concrete insulation board wall. The cast-in-place foam concrete wall has the least influence on the environment.
【学位授予单位】：沈阳大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU201.5

【相似文献】