飞灰地质聚合物混合物的参数优化:度,模和溶液/结合剂影响.
Ana Laura Lopes de Matos Riscado1, Carlos Maurício Fontes Vieira1, Sergio Neves Monteiro2
1Advanced Materials Laboratory, UENF - State University of the North in Rio de Janeiro, Av. Alberto Lamego, 2000, Campos dos Goytacazes, 28013-602, RJ, Brazil.
Scientific reports
|June 30, 2025
概括
本研究提出了基于飞灰的地质聚合物的新剂量方法,这是波特兰水泥的可持续替代品. 该方法准确预测压力强度,有助于开发环保建筑材料.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 环境科学 环境科学
背景情况:
- 波特兰水泥生产具有重大环境缺陷,包括高能耗,资源枯竭和二氧化碳排放.
- 来自飞灰的地质聚合物提供了一个可持续的替代品,具有较低的环境影响和良好的机械性能.
研究的目的:
- 开发和验证基于飞灰的地质聚合物的简单剂量方法.
- 建立关键组成参数和地质聚合物压力强度之间的相关性.
- 为优化地质聚合物混合物设计提供一个框架,以实现一致的性能.
主要方法:
- 使用飞灰作为前体来制备地质聚合物混合物.
- 水与粘合物 (w/b),聚合物与粘合物 (m),溶液分子度 (M) 和模量 (Ms) 的系统变化.
- 在25°C和60°C处理样品,然后进行压力强度测试.
- 使用异热热度计,X射线衍射 (XRD) 和扫描电子显微镜 (SEM) 的验证.
主要成果:
- 压力强度和W/B比率之间存在强烈的线性相关性 (R2=0.9952).
- 在压力强度和聚合物/粘合物比率之间观察到的二次关系 (R2=0.9927).
- 通过热固化 (60°C) 显著提高机械性能.
- 实验压力强度达到50.19MPa,预测模型达到46.99MPa (6.3%的误差).
- XRD和SEM证实了索达利特阶段的形成,表明成功地质聚合.
结论:
- 建议的剂量方法对于优化基于飞灰的地质聚合物配方是有效的.
- 该方法提供了一个可靠的框架来预测机械性能.
- 这项研究推动了具有可预测和一致性质的可持续建筑材料的开发.
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