混凝土表面拓学的定量评估:机械处理和测量分辨率的影响
1Faculty of Civil Engineering, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland.
Materials (Basel, Switzerland)
|December 11, 2025
概括
机械表面制备显著改变了混凝土的形态,磨削减少了质地,射击喷射增加了质地. 测量尺度也会影响结果,影响尺度敏感的参数,但不是强大的参数.
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.
- 表面计量学 表面计量学
背景情况:
- 表面形态对于混凝土的性能和耐用性至关重要.
- 量化机械制备和测量尺度对混凝土表面的联合影响是必不可少的,但不足.
研究的目的:
- 分析不同机械表面制备方法 (补丁,磨砂,喷射) 对混凝土形态的影响.
- 研究3D激光扫描的不同空间分辨率如何影响表面参数测量.
- 为可复制混凝土表面的表征提供定量数据.
主要方法:
- 三种表面条件:补丁,磨砂和喷射混凝土.
- 在五种不同的空间分辨率下获得的3D激光扫描测量.
- 对振幅,体积和尺度敏感的表面参数 (例如Sdr,Sdq,Ssk,Sku) 的分析.
主要成果:
- 机械制备在形态上占主导地位:研磨使参数减少了40-70%,射击喷射使参数增加了50-90%.
- 更粗的测量分辨率显著降低了80-90%的尺度敏感参数 (Sdr,Sdq).
- 像Ssk,Sku,Smr1和Smr2这样的参数显示出高强度 (在尺度上<5%的变化).
- 补丁表面的变化率 (CV>20-30%) 比均的机械处理表面更高.
结论:
- 表面准备方法是混凝土表面形态变化的主要驱动因素.
- 测量尺度显著影响尺度依赖的参数,需要仔细选择以进行准确的表征.
- 了解这些合效应对于可靠的混凝土表面工程和材料研究至关重要.
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