Investigation of changes in aggregates morphological characteristics and abrasion resistance before and after abrasion

作者：Hua Zhao, Hongcheng Gao, Jie Tang, Xingjie Xue, Bowen Guan · 发表于：International Journal of Pavement Engineering · 年份：2025 · DOI：10.1080/10298436.2025.2520024 · 被引用次数：6 · 研究领域：Advanced materials and composites、Tribology and Wear Analysis、Tunneling and Rock Mechanics

Skid resistance is vital for pavement safety, with aggregate morphology playing a key role in long-term abrasion performance. However, limited research has examined how these morphological characteristics evolve during abrasion and relate to intrinsic material properties. This study investigates the morphological changes and abrasion resistance of six high antislip aggregates: calcined bauxite (CB), basalt (BA), steel slag (SS), silicon mullite brick (SMB), castable (CA) and high-voltage electric porcelain (HVEP). Los Angeles (LA) abrasion tests were conducted—excluding steel balls—to simulate aggregate-on-aggregate wear. Morphological indices, including angularity, Form 2D, sphericity, flatness, elongation and microtexture, were quantified before and after abrasion using the Aggregate Image Measurement System (AIMS II). The results show significant changes in morphology, especially in angularity and Form 2D. Aggregates with higher initial angularity and microtexture, such as CB and SMB, exhibited superior abrasion resistance. Conversely, CA and HVEP showed greater morphological degradation. Furthermore, correlations between morphological evolution and physical parameters—such as crushing value and Polished Stone Value (PSV)—were established. High-Al2O3, low-crushing-value aggregates demonstrated improved durability. These findings provide valuable guidance for selecting aggregates in high-performance pavements, emphasising the influence of mineralogical and mechanical proper...