Hai Wang , Geng Chen , Haoyi Kang , Jiupeng Zhang , Li Rui , Lei Lyu , Jianzhong Pei
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引用次数: 0
Abstract
The adhesion between asphalt and aggregates is a complex physicochemical interfacial interaction that plays a critical role in determining the durability of asphalt pavement. This paper aims to investigate the determination mechanism of oxide composition and morphology of aggregates to their interfacial interaction and adhesion with asphalt, thereby optimizing the adhesion evaluation indicators of aggregates. Herein, the adhesion and interaction properties of aggregates were evaluated by photoelectric colorimetric, water boiling methods, and dynamic shear rheometer. The morphology and chemical compositions of 11 aggregates were characterized using X-ray diffraction, X-ray fluorescence, and scanning electron microscopy, thereby classified into 3 categories based on their oxide composition. The results indicate that the chemical composition of the aggregates is a crucial factor influencing adhesion rates, while micro-roughness impacts adhesion rates to varying degrees across different aggregate groups. Oxide composition was found to be a reliable predictor of adhesion properties, and incorporating surface roughness indicators improved the accuracy of adhesion rate prediction models. Both rheological indicators proved effective in characterizing the adhesion properties of aggregates, though they exhibited varying sensitivities depending on the aggregates categories.
期刊介绍:
Construction and Building Materials offers an international platform for sharing innovative and original research and development in the realm of construction and building materials, along with their practical applications in new projects and repair practices. The journal publishes a diverse array of pioneering research and application papers, detailing laboratory investigations and, to a limited extent, numerical analyses or reports on full-scale projects. Multi-part papers are discouraged.
Additionally, Construction and Building Materials features comprehensive case studies and insightful review articles that contribute to new insights in the field. Our focus is on papers related to construction materials, excluding those on structural engineering, geotechnics, and unbound highway layers. Covered materials and technologies encompass cement, concrete reinforcement, bricks and mortars, additives, corrosion technology, ceramics, timber, steel, polymers, glass fibers, recycled materials, bamboo, rammed earth, non-conventional building materials, bituminous materials, and applications in railway materials.