基于AE和断层扫描的混凝土中水源的3D定位
Eleni Korda1,2, Fuzhen Chen3, Hwa Kian Chai3
1Department of Mechanics of Materials and Constructions, Vrije Universiteit Brussel, 1050 Brussels, Belgium.
Sensors (Basel, Switzerland)
|February 27, 2026
概括
超吸收性聚合物 (SAP) 通过释放水用于内部固化来减轻混凝土的收缩. 声辐射 (AE) 监测和断层扫描精确定位水化活动,增强早期混凝土质量控制和耐用性.
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.
- 混凝土技术 混凝土技术
背景情况:
- 混凝土中的塑料收缩和自我干燥可以导致早期裂,损害长期耐用性.
- 超吸收聚合物 (SAP) 在混凝土中用于提供内部固化,释放水以促进水合水泥并减少收缩.
- 声辐射 (AE) 监测跟踪内部固化动力学,但缺乏关于水释放和水化活动的空间信息.
研究的目的:
- 研究AE事件源定位和声波发射断层扫描 (AET) 的应用,用于在SAP混凝土中可视化内部固化和水化.
- 通过定位活跃区域,弥合了解与内部水分分配和水泥水化相关的微观结构变化的差距.
- 为早期混凝土质量控制提供一种非破坏性的方法,确保统一的内部水固化,以提高耐用性.
主要方法:
- 利用AE监测来跟踪SAP释放的水,并识别内部活动.
- 应用AE事件源定位来确定水化活动的3D空间分布.
- 使用声波发射断层扫描 (AET) 通过超声速变化可视化材料刚性的空间和时间发展.
主要成果:
- AE事件源本地化为混凝土中的水水化活动的3D演变提供了见解.
- AET可视化了混凝土硬度的空间和时间发展,与水化和水分分配有关.
- 这些技术可以实时可视化水化源的演变,这对SAP混凝土质量至关重要.
结论:
- 在SAP混凝土中,AE源定位和AET是有效的非破坏性工具,用于监测SAP混凝土的内部固化和水化.
- 这些方法提供了关于微观结构变化的关键空间和时间数据,这对于确保混凝土的耐用性至关重要.
- 结合的技术为早期的混凝土质量控制提供了具有成本效益的解决方案,解决了传统方法的局限性.
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