基于农林,建筑和拆除废物的飞灰的大量CO2减少和增强的热性能,用于可持续建筑的飞灰
Siddharth Singh1, Soumitra Maiti2, Ravindra Singh Bisht3
1Construction, Automation and Robotics Group, CSIR- Central Building Research Institute, Roorkee, 247667, India. siddharthsingh@cbri.res.in.
Scientific reports
|April 10, 2024
概括
这项研究评估了用废物制成的飞灰,发现它们与传统的烧土相比,显著减少了二氧化碳 (CO2) 排放和能源消耗. 这些环保提供了可持续的建筑,并提高了热性能.
科学领域:
- 可持续的建筑材料 可持续的建筑材料
- 绿色建筑技术 绿色建筑技术
- 建筑垃圾的利用 在建筑垃圾的利用.
背景情况:
- 烧土生产释放出大量的温室气体 (GHG),导致更大的碳足迹.
- 传统具有高的体现能量和每单位大量的二氧化碳排放.
- 建筑行业越来越需要可持续的替代品来减轻对环境的影响.
研究的目的:
- 评估由飞灰和各种废物制造的的碳排放和热性能.
- 为了比较这些新的环境影响和热性能与传统的烧土.
- 通过在建筑中采用基于废物的飞灰来评估减少二氧化碳排放的潜力.
主要方法:
- 使用生命周期分析 (LCA) 来量化飞灰和烧土的二氧化碳排放.
- 对不同类型的进行了体内能量计算.
- 用新建造的建筑物测量了热参数,包括U值和热导率.
- 块是使用飞灰,农林废物,建筑和拆除废物 (C&D) 和用NaOH激活的高炉砂 (GGBFS) 制造的.
主要成果:
- 飞灰每排放43.28克二氧化碳,远低于烧焦的粘土 (每290克二氧化碳).
- 用废弃物制成的飞灰取代1~2%的烧土,可以将年度二氧化碳排放量减少50~150万.
- 基于飞灰的块消耗的能量比燃烧的粘土块少10-15倍.
- 这些新显示出足够的隔热,U值为0.5-1.2W/m2K,导热率为0.4-0.5W/mK.
结论:
- 基于废物的飞灰为传统的烧土提供了一个可持续和环保的替代品.
- 这些有助于显著减少二氧化碳排放,并降低建筑物中体现的能量.
- 这些的适当的热性能提高了热舒适度,并支持绿色建筑实践.
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