生物炭作为低排放建筑材料的可持续组成部分
Iwona Ryłko1, Robert Zarzycki2, Łukasz Bobak1
1Department of Applied Bioeconomy, Wrocław University of Environmental and Life Sciences, 37a Chełmońskiego Str., 51-630 Wrocław, Poland.
Materials (Basel, Switzerland)
|September 13, 2025
概括
来自木材生物质的生物炭 (BC) 提高了砂的性能,提供了可持续的建筑添加剂. 生命周期评估显示,BC可以将碳足迹减少高达35%,支持循环经济目标.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 可持续建筑 可持续建筑
背景情况:
- 生物炭 (BC) 是由木材生物质热解生成的,是用于水泥砂的潜在可持续添加剂.
- 它的性能随着热解温度的变化而变化,影响性能和环境影响.
研究的目的:
- 为了研究在不同热解温度 (450°C,550°C,700°C) 下产生的生物炭对水泥粘合砂性能的影响.
- 评估物理化学性质,机械/粘合强度,VOC排放,污染物透性,并进行生命周期评估 (LCA).
主要方法:
- 生物炭和砂的物理化学表征.
- 对含有不同生物炭 (1-5%) 的砂进行机械和粘附测试.
- 挥发性有机物排放分析,透性测试和LCA.
主要成果:
- 在700°C生产的生物炭显示出高碳含量,性pH和多孔性;在450°C生产的生物炭具有更好的吸收和功能组.
- 1-5%的生物炭添加改善了砂性能,但更高的剂量降低了粘合力.
- 挥发性有机化合物和金属可性通常在安全范围内.
- 经过LCA,通过用生物炭代替矿物填充剂,可能减少高达35%的碳足迹.
结论:
- 生物炭是低排放建筑材料的有希望,安全和对环境有益的添加剂.
- 优化生物炭生产和剂量是最大限度地提高砂效益的关键.
- 使用生物炭符合循环经济原则和气候中立目标.
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