对超高性能混凝土作为可重复使用的模具材料进行初步研究,用于造
Janna Link1, Fabian Teichmann2, Alexander Wetzel1
1Department of Structural Materials and Construction Chemistry, University of Kassel, 34117 Kassel, Germany.
Materials (Basel, Switzerland)
|January 11, 2025
概括
超高性能混凝土 (UHPC) 显示出可重复使用的造模具的前景. 活性UHPC模具在10个周期中保持完整性,在耐用性和表面质量方面超过普通波特兰水泥版本.
科学领域:
- 材料科学 材料科学 材料科学
- 制造业 工程 制造工程
- 混凝土技术 混凝土技术
背景情况:
- 可重复使用的模具对于高效的造工艺至关重要.
- 传统的模具材料在耐用性和成本方面面临限制.
- 超高性能混凝土 (UHPC) 为先进的模具应用提供了潜力.
研究的目的:
- 评估UHPC对可重复使用的造模具的可行性.
- 为了比较基于普通波特兰水泥 (OPC) 的超高压和基于活性材料 (AAM) 的超高压的性能.
- 通过重复的造周期来评估UHPC模具的表面完整性和热耐用性.
主要方法:
- 使用OPC和AAM配方制造UHPC模具的制造.
- 测量表面粗度和重复的造周期测试.
- 热稳定性分析通过热重力测量分析,侵入孔径测量,显微镜和裂纹细分.
主要成果:
- AAM-UHPC模具表现出卓越的性能,能够承受高达10个造周期的最小降解.
- 与AAM-UHPC模具相比,OPC-UHPC模具的降解速度更快.
- 超高压模具生产的件的粒度大小与钢模相比,表明件的质量很高.
结论:
- 活性UHPC是可重复使用的造模具的可行材料,提供更好的耐用性和表面质量.
- 在与融相互作用时,UHPC模具具有较低的粘合力和最小的缺陷形成.
- 超高压材料,特别是AAM配方,在低压环境中为提高造效率和质量提供了一个有希望的途径.
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