Mix design considerations of foamed bitumen mixtures with reclaimed asphalt pavement material
In the present work, a mix design parametric study was carried out with the aim of proposing a practical and consistent mix design procedure for foamed bitumen mixtures (FBMs). The mix design parameters that were adopted in the study are mixing and compaction water content (MWC), compaction effort u...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Published: |
Taylor and Francis
2016
|
| Subjects: | |
| Online Access: | https://eprints.nottingham.ac.uk/41372/ |
| _version_ | 1848796260237049856 |
|---|---|
| author | Kuna, Kranthi Airey, Gordon Thom, Nick |
| author_facet | Kuna, Kranthi Airey, Gordon Thom, Nick |
| author_sort | Kuna, Kranthi |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | In the present work, a mix design parametric study was carried out with the aim of proposing a practical and consistent mix design procedure for foamed bitumen mixtures (FBMs). The mix design parameters that were adopted in the study are mixing and compaction water content (MWC), compaction effort using a gyratory compactor and aggregate temperature. This parametric study was initially carried out on FBMs with virgin limestone aggregate without reclaimed asphalt pavement (RAP) material and a mix design procedure was proposed. This proposed methodology was also found to apply to FBMs with RAP. A detailed consideration was also given to characterising the RAP material so as to understand its contribution to the mechanical properties of FBMs. Optimum MWC was achieved by optimising mechanical properties such as indirect tensile stiffness modulus and indirect tensile strength (ITS-dry and ITS-wet). A rational range of 75–85% of optimum water content obtained by the modified Proctor test was found to be the optimum range of MWC that gives optimum mechanical properties for FBMs. It was also found that the presence of RAP influenced the design foamed bitumen content, which means that treating RAP as black rock in FBM mix design is not appropriate. To study the influence of bitumen and water during compaction, modified Proctor compaction and gyratory compaction were employed on mixes with varying amounts of water and bitumen. By this, the work also evaluated the validity of the total fluid (water + bitumen) concept that is widely used in bitumen–emulsion-treated mixes, and found it not to be applicable. |
| first_indexed | 2025-11-14T19:45:09Z |
| format | Article |
| id | nottingham-41372 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:45:09Z |
| publishDate | 2016 |
| publisher | Taylor and Francis |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-413722020-05-04T17:33:47Z https://eprints.nottingham.ac.uk/41372/ Mix design considerations of foamed bitumen mixtures with reclaimed asphalt pavement material Kuna, Kranthi Airey, Gordon Thom, Nick In the present work, a mix design parametric study was carried out with the aim of proposing a practical and consistent mix design procedure for foamed bitumen mixtures (FBMs). The mix design parameters that were adopted in the study are mixing and compaction water content (MWC), compaction effort using a gyratory compactor and aggregate temperature. This parametric study was initially carried out on FBMs with virgin limestone aggregate without reclaimed asphalt pavement (RAP) material and a mix design procedure was proposed. This proposed methodology was also found to apply to FBMs with RAP. A detailed consideration was also given to characterising the RAP material so as to understand its contribution to the mechanical properties of FBMs. Optimum MWC was achieved by optimising mechanical properties such as indirect tensile stiffness modulus and indirect tensile strength (ITS-dry and ITS-wet). A rational range of 75–85% of optimum water content obtained by the modified Proctor test was found to be the optimum range of MWC that gives optimum mechanical properties for FBMs. It was also found that the presence of RAP influenced the design foamed bitumen content, which means that treating RAP as black rock in FBM mix design is not appropriate. To study the influence of bitumen and water during compaction, modified Proctor compaction and gyratory compaction were employed on mixes with varying amounts of water and bitumen. By this, the work also evaluated the validity of the total fluid (water + bitumen) concept that is widely used in bitumen–emulsion-treated mixes, and found it not to be applicable. Taylor and Francis 2016-01-04 Article PeerReviewed Kuna, Kranthi, Airey, Gordon and Thom, Nick (2016) Mix design considerations of foamed bitumen mixtures with reclaimed asphalt pavement material. International Journal of Pavement Engineering . pp. 1-14. ISSN 1029-8436 Bitumen treated mixes Mixing and compaction water content Reclaimed asphalt pavement Mechanical properties Volumetrics Water-bitumen interaction https://doi.org/10.1080/10298436.2015.1126271 doi:10.1080/10298436.2015.1126271 doi:10.1080/10298436.2015.1126271 |
| spellingShingle | Bitumen treated mixes Mixing and compaction water content Reclaimed asphalt pavement Mechanical properties Volumetrics Water-bitumen interaction Kuna, Kranthi Airey, Gordon Thom, Nick Mix design considerations of foamed bitumen mixtures with reclaimed asphalt pavement material |
| title | Mix design considerations of foamed bitumen mixtures with reclaimed asphalt pavement material |
| title_full | Mix design considerations of foamed bitumen mixtures with reclaimed asphalt pavement material |
| title_fullStr | Mix design considerations of foamed bitumen mixtures with reclaimed asphalt pavement material |
| title_full_unstemmed | Mix design considerations of foamed bitumen mixtures with reclaimed asphalt pavement material |
| title_short | Mix design considerations of foamed bitumen mixtures with reclaimed asphalt pavement material |
| title_sort | mix design considerations of foamed bitumen mixtures with reclaimed asphalt pavement material |
| topic | Bitumen treated mixes Mixing and compaction water content Reclaimed asphalt pavement Mechanical properties Volumetrics Water-bitumen interaction |
| url | https://eprints.nottingham.ac.uk/41372/ https://eprints.nottingham.ac.uk/41372/ https://eprints.nottingham.ac.uk/41372/ |