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调查耐火钢的高温结合性能,使用带肋式不钢条
Linas Plioplys1, Valentin Antonovič2, Renata Boris2
1Laboratory of Innovative Building Structures, Vilnius Gediminas Technical University, Sauletekio Av. 11, 10223 Vilnius, Lithuania.
这项研究检查了在高温暴露后,钢条在耐火材料中的结合性能. 压力强度与粘合阻力没有直接相关,这对于工业结构的防火和防爆保护至关重要.
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.
- 陶制品 在陶方面.
背景情况:
- 耐火材料与酸水泥 (CAC) 提供了优异的高温机械电阻.
- 超高性能结构需要用于防火和防爆的条形钢筋,这使得粘合性能至关重要.
- 压力强度可能无法准确预测高温耐火材料的粘合电阻.
研究的目的:
- 研究在经过高温处理后,在各种耐火化合物中结合带带的不钢奥氏体钢条的结合行为.
- 为了确定压力强度和热应力下的结合阻力之间的关系.
- 评估不同耐火混合物的适合性,以加强结构应用.
主要方法:
- 开发并测试了四种耐火化合物:常规造材料 (CC),中型水泥造材料 (MCC),低水泥造材料 (LCC) 和低水泥矿基造材料 (LCB).
- 标本经过400°C,600°C,800°C和1000°C的温度.
- 进行了机械测试,拉出测试,X射线光 (XRF),X射线衍射 (XRD) 和扫描电子显微镜 (SEM).
主要成果:
- 通过拉出变形能量测量的结合阻力没有与不同耐火成分和温度的压力强度直接相关.
- 高温暴露显著改变了材料特性,影响了结合性能.
- 该研究证实,压力强度并不是这些系统在热负荷下结合行为的可靠指标.
结论:
- 支持了这样一个假设:压力强度与高温下的粘合阻力无关.
- 这些发现对于设计可靠的强化耐火结构,适用于苛刻的工业环境至关重要.
- 建议进一步研究热循环下的结合机制.
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