骨料多尺度粒形表征及其对混凝土性能影响

Characterization of Aggregate Multi-scale Particle Shape and Its Impact on Concrete Performance

摘要:

从骨料形状、棱角性和表面纹理3个尺度出发，系统梳理了骨料粒形的表征方法及其优缺点，深入探讨了不同尺度粒形特征对混凝土工作性、力学性能和耐久性的影响机制。结果表明，骨料粒形通过影响颗粒堆积密实度、界面过渡区特性及传输路径显著改变了混凝土性能。

Abstract:

The characterization methods of aggregate particle shape and their advantages and disadvantages were systematically reviewed from three scales： shape， angularity， and surface texture. The influence mechanisms of particle shape characteristics at different scales on the workability， mechanical properties， and durability of concrete were thoroughly investigated. It is demonstrated that concrete performance is significantly altered by aggregate particle shape through its effects on particle packing density， the characteristics of the interfacial transition zone， and transport pathways.