基于飞灰-烟的自压缩地质聚合物混凝土的综合实验,机器学习和生命周期评估
Siva Shanmukha Anjaneya Babu Padavala1, Siva Avudaiappan2, Sri Ram Ravi Teja Prathipati3
1Department of Civil Engineering, Gudlavalleru Engineering College, Gudlavalleru, Andhra Pradesh, India.
Scientific reports
|March 11, 2026
概括
这项研究表明,在自压缩地质聚合物混凝土 (SCGC) 中将10%的二氧化烟雾 (SF) 添加到飞灰 (FA) 中,可以显著提高强度和耐用性. 与传统混凝土相比,这种优化的地质聚合物混凝土提供了更好的性能和更低的环境影响.
科学领域:
- 材料科学与工程 材料科学与工程
- 可持续的建筑材料 可持续的建筑材料
- 混凝土技术 混凝土技术
背景情况:
- 自压缩地质聚合物混凝土 (SCGC) 为普通波特兰水泥 (OPC) 混凝土提供了一个可持续的替代方案.
- 优化SCGC的混合设计,使用飞灰 (FA) 和烟 (SF) 等补充性水泥材料,对于提高其性能至关重要.
- 关于FA和SF对SCGC的机械,耐久性和微观结构性质的联合影响,以及其环境影响和预测建模的研究有限.
研究的目的:
- 研究基于飞灰 (FA) 的自压缩地质聚合物混凝土 (SCGC) 中不同烟 (SF) 替代水平 (0-15%) 的影响.
- 评估SCGC混合物的机械性能,耐用性和微观结构特征.
- 评估环境影响并开发机器学习模型,用于FA-SF SCGC的性能预测.
主要方法:
- 准备了四种SCGC混合物,其中SF取代了FA在0,5,10和15%的比例上.
- 进行了机械测试 (压缩,分裂拉伸,曲),耐久性测试 (吸附性,RCPT,UPV) 和微结构分析 (SEM).
- 机器学习模型 (KNN,SVM,决策树,随机森林) 使用混合参数,新鲜性质和固化年龄开发;进行了生命周期评估 (LCA).
主要成果:
- 10%SF (G10) 的SCGC混合物表现出优异的性能,压力强度比21%高,拉伸/弹性强度比仅FA的SCGC高14-18%.在180天后.
- 在G10混合物中,耐久性显著提高,显示了降低的吸附性 (21%),极低的化物透性 (RCPT < 1000 库伦),高的UPV值表明密集的微观结构.
- 随机森林模型实现了高预测准确度 (R2=0.94),LCA显示,与OPC-SCC相比,地质聚合物SCC的全球变暖潜力降低了30-45%,能源消耗降低了20-25%,其中G10是最可持续的.
结论:
- 在基于FA的SCGC中加入10%的SF优化了可加工性,强度和耐久性,创造出高性能可持续混凝土.
- G10混合物表现出精细的孔隙结构和增强的地质聚合物凝形成,由SEM证实.
- 与OPC-SCC相比,FA-SF SCGC,特别是G10组合,提供了显著的环境效益,得到实验数据,微结构分析和预测建模的支持.
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