Moisture-induced strength degradation of aggregate-asphalt mastic bonds
A common manifestation of moisture-induced damage in asphalt mixtures is the loss of adhesion at the aggregate–asphalt mastic interface and/or cohesion within the bulk mastic. This paper investigates the effects of moisture on the aggregate–mastic interfacial adhesive strength as well as the bulk ma...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Published: |
Taylor & Francis
2014
|
| Subjects: | |
| Online Access: | https://eprints.nottingham.ac.uk/50812/ |
| _version_ | 1848798346596057088 |
|---|---|
| author | Apeagyei, Alex K. Grenfell, James Airey, Gordon |
| author_facet | Apeagyei, Alex K. Grenfell, James Airey, Gordon |
| author_sort | Apeagyei, Alex K. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | A common manifestation of moisture-induced damage in asphalt mixtures is the loss of adhesion at the aggregate–asphalt mastic interface and/or cohesion within the bulk mastic. This paper investigates the effects of moisture on the aggregate–mastic interfacial adhesive strength as well as the bulk mastic cohesive strength. Physical adsorption concepts were used to characterise the thermodynamic work of adhesion and debonding of the aggregate–mastic bonds using dynamic vapour sorption and contact angle measurements. Moisture diffusion in the aggregate substrates and in the bulk mastics was determined using gravimetric techniques. Mineral composition of the aggregates was characterised by a technique based on the combination of a scanning electron microscope and multiple energy dispersive X-ray detectors. Aggregate–mastic bond strength was determined using moisture-conditioned butt-jointed tensile test specimens, while mastic cohesive strength was determined using dog bone-shaped tensile specimens. Aggregate–mastic bonds comprising granite mastics performed worse in terms of moisture resistance than limestone mastic bonds. The effect of moisture on the aggregate–mastic interfacial bond appears to be more detrimental than the effect of moisture on the bulk mastic. |
| first_indexed | 2025-11-14T20:18:19Z |
| format | Article |
| id | nottingham-50812 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:18:19Z |
| publishDate | 2014 |
| publisher | Taylor & Francis |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-508122020-05-04T16:49:16Z https://eprints.nottingham.ac.uk/50812/ Moisture-induced strength degradation of aggregate-asphalt mastic bonds Apeagyei, Alex K. Grenfell, James Airey, Gordon A common manifestation of moisture-induced damage in asphalt mixtures is the loss of adhesion at the aggregate–asphalt mastic interface and/or cohesion within the bulk mastic. This paper investigates the effects of moisture on the aggregate–mastic interfacial adhesive strength as well as the bulk mastic cohesive strength. Physical adsorption concepts were used to characterise the thermodynamic work of adhesion and debonding of the aggregate–mastic bonds using dynamic vapour sorption and contact angle measurements. Moisture diffusion in the aggregate substrates and in the bulk mastics was determined using gravimetric techniques. Mineral composition of the aggregates was characterised by a technique based on the combination of a scanning electron microscope and multiple energy dispersive X-ray detectors. Aggregate–mastic bond strength was determined using moisture-conditioned butt-jointed tensile test specimens, while mastic cohesive strength was determined using dog bone-shaped tensile specimens. Aggregate–mastic bonds comprising granite mastics performed worse in terms of moisture resistance than limestone mastic bonds. The effect of moisture on the aggregate–mastic interfacial bond appears to be more detrimental than the effect of moisture on the bulk mastic. Taylor & Francis 2014-06-19 Article PeerReviewed Apeagyei, Alex K., Grenfell, James and Airey, Gordon (2014) Moisture-induced strength degradation of aggregate-asphalt mastic bonds. Road Materials and Pavement Design, 15 (S1). pp. 239-262. ISSN 1468-0629 asphalt mastic adhesive strength bitumen diffusion moisture-induced damage https://www.tandfonline.com/doi/abs/10.1080/14680629.2014.927951 doi:10.1080/14680629.2014.927951 doi:10.1080/14680629.2014.927951 |
| spellingShingle | asphalt mastic adhesive strength bitumen diffusion moisture-induced damage Apeagyei, Alex K. Grenfell, James Airey, Gordon Moisture-induced strength degradation of aggregate-asphalt mastic bonds |
| title | Moisture-induced strength degradation of aggregate-asphalt mastic bonds |
| title_full | Moisture-induced strength degradation of aggregate-asphalt mastic bonds |
| title_fullStr | Moisture-induced strength degradation of aggregate-asphalt mastic bonds |
| title_full_unstemmed | Moisture-induced strength degradation of aggregate-asphalt mastic bonds |
| title_short | Moisture-induced strength degradation of aggregate-asphalt mastic bonds |
| title_sort | moisture-induced strength degradation of aggregate-asphalt mastic bonds |
| topic | asphalt mastic adhesive strength bitumen diffusion moisture-induced damage |
| url | https://eprints.nottingham.ac.uk/50812/ https://eprints.nottingham.ac.uk/50812/ https://eprints.nottingham.ac.uk/50812/ |