Impact of the chemical composition of aggregates on the adhesion quality and durability of asphalt-aggregate systems
| Autor: | Andres Cala, Maria Lleras, Yamirka Rojas-Agramonte, Silvia Caro |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Felsic Aggregate (composite) Moisture Lithology Metallurgy 0211 other engineering and technologies 020101 civil engineering 02 engineering and technology Building and Construction Durability 0201 civil engineering Asphalt 021105 building & construction General Materials Science Mafic Chemical composition Civil and Structural Engineering |
| Zdroj: | Construction and Building Materials. 216:661-672 |
| ISSN: | 0950-0618 |
| DOI: | 10.1016/j.conbuildmat.2019.05.030 |
| Popis: | Rock mineralogy is critical in determining the adhesion quality and moisture susceptibility of asphalt-aggregate systems in asphalt mixtures. This work aims at identifying the chemical properties of aggregates that influence the quality and durability of these systems. To accomplish this goal, three lithologies with an ample mineralogical and chemical spectrum (i.e. quartzite, granodiorite and serpentinite) were selected. Asphalt-aggregate specimens fabricated with these lithologies were tested using a new pull-off experiment in dry condition, and after 1, 3 and 7 days of being submerged in water. The results show that rocks of mafic composition (e.g. serpentinite) have better resistance to moisture damage than felsic rocks (e.g. quartzite and granodiorite), and that certain specific aggregate oxides promote or prevent moisture degradation in these systems. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect