Influence of mineral filler characteristics on the filler–asphalt interfacial behavior

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology Pub Date : 2024-08-27 DOI:10.1016/j.apt.2024.104636

Baodong Xing , Chen Fang , Xiaobo Lyu , Weiyu Fan , Yuchao Lyu

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Abstract

The knowledge of mineral filler characteristics and their impacts on filler–asphalt interfacial behavior is not systematic and completed yet. In this paper, eight mineral fillers prepared using the same milling procedure were investigated. The filler–asphalt interfacial behavior was analyzed by differential scanning calorimetric and dynamic shear rheometer tests. Results reveal that in contrast to form factor and specific surface area, particle porosity, particle density, aspect ratio, angularity index, fractal dimension and feature roughness decrease with decreasing particle size. Limestone filler exhibits more regular shape, less significant angularity and richer surface texture than basalt filler. Of all particle characteristics studied, form factor and specific surface area are suggested to be the determining factors affecting filler–asphalt interfacial behavior. Moreover, microscopic morphology analysis provides an insight to interpret the differences explored in mastic interfacial property. The results help employ applicable particle characteristics that fabricate mastic with a stable interface system.

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矿物填料特性对填料-沥青界面行为的影响

有关矿物填料特性及其对填料-沥青界面行为影响的知识还不够系统和完整。本文研究了使用相同研磨程序制备的八种矿物填料。通过差示扫描量热和动态剪切流变仪测试分析了填料与沥青的界面行为。结果表明，与形状系数和比表面积相反，颗粒孔隙率、颗粒密度、长宽比、角度指数、分形维度和特征粗糙度随着颗粒尺寸的减小而减小。与玄武岩填料相比，石灰石填料的形状更规则，棱角更不明显，表面纹理更丰富。在研究的所有颗粒特征中，形状系数和比表面积被认为是影响填料-沥青界面行为的决定性因素。此外，显微形态分析还为解释胶泥界面特性的差异提供了一种见解。这些结果有助于采用适用的颗粒特性来制造具有稳定界面系统的胶泥。

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来源期刊

Advanced Powder Technology 工程技术-工程：化工

CiteScore

9.50

自引率

7.70%

发文量

424

审稿时长

55 days

期刊介绍： The aim of Advanced Powder Technology is to meet the demand for an international journal that integrates all aspects of science and technology research on powder and particulate materials. The journal fulfills this purpose by publishing original research papers, rapid communications, reviews, and translated articles by prominent researchers worldwide. The editorial work of Advanced Powder Technology, which was founded as the International Journal of the Society of Powder Technology, Japan, is now shared by distinguished board members, who operate in a unique framework designed to respond to the increasing global demand for articles on not only powder and particles, but also on various materials produced from them. Advanced Powder Technology covers various areas, but a discussion of powder and particles is required in articles. Topics include: Production of powder and particulate materials in gases and liquids(nanoparticles, fine ceramics, pharmaceuticals, novel functional materials, etc.); Aerosol and colloidal processing; Powder and particle characterization; Dynamics and phenomena; Calculation and simulation (CFD, DEM, Monte Carlo method, population balance, etc.); Measurement and control of powder processes; Particle modification; Comminution; Powder handling and operations (storage, transport, granulation, separation, fluidization, etc.)