Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Morphological characteristics of mineral filler and their influence on active adhesion between aggregates and bitumen
Highlights The morphologies of filler were quantified by image analysis. An active adhesion evaluation method was designed. The relationship between filler morphologies and adhesion was investigated. The optimal angularity and roundness of filler were recommended.
Abstract Mineral filler has a significant effect on the service performance of asphalt pavement. This study used morphological analysis and active adhesion test to explore the relationship between morphologies of filler and pavement properties. Limestone fillers with different morphologies were prepared by four crush methods for adhesion analysis of aggregates-bitumen interface. The coating ratios were calculated by image analysis and volumetric analysis, used to represent the active adhesion properties. The results show that the roundness of jaw-crushed filler is the smallest, and it can be attributed to the heavier force of jaw crusher than the other three methods. There is no evidence that the crush methods contribute directly to the angularity of filler. Furthermore, a close negative linear relationship was found between the roundness of fillers and adhesion properties. The recommended angularity and roundness of mineral filler should be less than 0.895 and less than 0.515, respectively, to ensure a well-accepted active adhesion between aggregates and bitumen materials.
Morphological characteristics of mineral filler and their influence on active adhesion between aggregates and bitumen
Highlights The morphologies of filler were quantified by image analysis. An active adhesion evaluation method was designed. The relationship between filler morphologies and adhesion was investigated. The optimal angularity and roundness of filler were recommended.
Abstract Mineral filler has a significant effect on the service performance of asphalt pavement. This study used morphological analysis and active adhesion test to explore the relationship between morphologies of filler and pavement properties. Limestone fillers with different morphologies were prepared by four crush methods for adhesion analysis of aggregates-bitumen interface. The coating ratios were calculated by image analysis and volumetric analysis, used to represent the active adhesion properties. The results show that the roundness of jaw-crushed filler is the smallest, and it can be attributed to the heavier force of jaw crusher than the other three methods. There is no evidence that the crush methods contribute directly to the angularity of filler. Furthermore, a close negative linear relationship was found between the roundness of fillers and adhesion properties. The recommended angularity and roundness of mineral filler should be less than 0.895 and less than 0.515, respectively, to ensure a well-accepted active adhesion between aggregates and bitumen materials.
Morphological characteristics of mineral filler and their influence on active adhesion between aggregates and bitumen
Wang, Feng (Autor:in) / Xiao, Yue (Autor:in) / Chen, Zongwu (Autor:in) / Cui, Peide (Autor:in) / Liu, Jian (Autor:in) / Wang, Ning (Autor:in)
17.01.2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
The influence of the mineral filler on the adhesion between aggregates and bitumen
| Tema Archiv | 2015
Adhesion of bitumen to aggregates
| Engineering Index Backfile | 1942