通过性激活应用工业废物材料作为地质聚合物粘合剂
Kinga Setlak1, Janusz Mikuła1, Michał Łach1
1Faculty of Materials Engineering and Physics, Cracow University of Technology, Jana Pawła II 37, 31-864 Cracow, Poland.
Materials (Basel, Switzerland)
|December 23, 2023
概括
这项研究合成地质聚合物粘合剂来自当地废物,如石和飞灰,作为水泥的可持续替代品. 地质聚合物粘合剂实现了超过57 MPa的压力强度,证明了它们在建筑中的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 绿色化学 绿色化学
- 土木工程 土木工程是指土木工程.
背景情况:
- 传统的水泥生产对环境产生了重大影响.
- 地质聚合物粘合剂提供了一个可持续的替代品,利用工业副产品和自然材料.
- 从当地资源开发有效的地质聚合物结合剂对于减少碳足迹至关重要.
研究的目的:
- 使用当地采购的废物材料合成地质聚合物结合剂:石灰 (Ch),两石 (A),煤飞灰 (PB) 和二氧化粉 (D).
- 为了评估地质聚合物粘合剂的性能,改用metakaolin (M) 作为普通波特兰水泥的环保替代品.
- 研究原材料成分对合成地质聚合物结合物的机械性能和微观结构的影响.
主要方法:
- 原材料 (Ch,A,PB,D) 使用X射线光 (XRF) 和X射线微光度量 (XRD) 进行了表征.
- 地质聚合物结合剂是通过激活 (10M NaOH和水玻璃) 和热处理 (24小时60°C) 生产的.
- 机械性能 (压力和强度) 和微结构分析 (SEM) 经过28天的固化后进行.
主要成果:
- 由化和煤飞灰 (Ch + PB) 组成的地质聚合物粘合剂表现出最高的压力强度,超过57MPa.
- 最低的压力强度在含有石,二氧化粉,两石和甲 (Ch + D + A + M) 的结合剂中观察到,结果高于20 MPa.
- 结合了二氧化粉,两石,甲和飞灰 (D + A + M + PB) 的粘合剂显示出最高的屈曲强度,超过12 MPa.
结论:
- 从当地废物中合成的地聚合物粘合剂显示出有前途的机械性能,与传统水泥相比.
- 石灰和煤飞灰的组合特别有效地实现了高压力强度.
- 对优化粘合剂配方的进一步研究可以导致这些可持续材料在建筑行业的广泛采用.
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