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Influence of binder and active filler content on the shear properties of high ra bitumen stabilised materials
Cotterrell, R. G. 2025. Influence of Binder and Active Filler Content on the Shear Properties of High RA Bitumen Stabilised Materials. Unpublished masters thesis. Stellenbosch: Stellenbosch University [online]. Available: https://scholar.sun.ac.za/items/ff90e35c-cc5c-4144-83da-8ddfb0eb4a26
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Stellenbosch : Stellenbosch University
2025
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| _version_ | 1867614141109239808 |
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| access_status_str | Open Access |
| author | Cotterrell, Ross Glenn |
| author2 | Jenkins, Kim J. |
| author_browse | Cotterrell, Ross Glenn Jenkins, Kim J. |
| author_facet | Jenkins, Kim J. Cotterrell, Ross Glenn |
| author_sort | Cotterrell, Ross Glenn |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Cotterrell, R. G. 2025. Influence of Binder and Active Filler Content on the
Shear Properties of High RA Bitumen Stabilised Materials. Unpublished masters thesis. Stellenbosch: Stellenbosch University [online]. Available: https://scholar.sun.ac.za/items/ff90e35c-cc5c-4144-83da-8ddfb0eb4a26 |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/132111 |
| institution | Stellenbosch University (South Africa) |
| last_indexed | 2026-06-10T12:47:19.123Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/132111 Influence of binder and active filler content on the shear properties of high ra bitumen stabilised materials Cotterrell, Ross Glenn Jenkins, Kim J. Stellenbosch University. Faculty of Engineering. Dept. of Civil Engineering. Pavements, Bituminous Shear (Mechanics) Fillers (Materials) Asphalt concrete UCTD Cotterrell, R. G. 2025. Influence of Binder and Active Filler Content on the Shear Properties of High RA Bitumen Stabilised Materials. Unpublished masters thesis. Stellenbosch: Stellenbosch University [online]. Available: https://scholar.sun.ac.za/items/ff90e35c-cc5c-4144-83da-8ddfb0eb4a26 Thesis (MEng)--Stellenbosch University, 2025. ENGLISH ABSTRACT: BSM technology has emerged as an innovative solution for the rehabilitation and construction of roads under increasing financial and environmental constraints. Significant research undertaken has developed design procedures to ensure non-continuously bound behaviour. However, additional research is required to verify the behaviour of BSMs produced with 100% reclaimed asphalt (RA) at varying bitumen and active filler contents. This study aimed to quantify this in terms of shear properties, indirect tensile strength, resilient modulus, flexibility, and moisture resistance. Testing was undertaken on twelve different BSM mixes grouped into two main series. The first series was produced with a set bitumen content of 2.4% and varying active filler contents. The second series was produced with a set active filler content of 1% and varying bitumen contents. Each of those series was comprised of two sub-series. One sub-series used cement as the active filler while the other used lime as the active filler. The RA used had a typical crushed RA grading with only 1.2% passing the 0.075 mm sieve. It was shown to be inactive. Only foamed bitumen was considered, produced with 70/100 penetration grade bitumen. Most test findings corresponded with expected findings based on literature, but some deviations were noted. The most significant deviation involved the shear properties at increasing active filler contents. Generally, cohesion increased while friction angle decreased as the active filler content was increased from 1% to 3%. However, a further increase to an active filler content of 4% produced slightly lower cohesion and a significantly higher friction angle. This was not noted in any of the literature consulted. Further research is recommended to confirm the mechanism responsible. The results obtained and trends observed from all tests conducted for each mix series were considered in combination to gain insight into the influence of the relevant mix parameter on the mix behaviour. The results at increasing cement contents suggested the material exhibited more continuously bound behaviour. The results suggested that non-continuously bound behaviour was retained as lime content increased. Although variation was noted, the results suggested that non-continuously bound behaviour was AFRIKAANSE OPSOMMING: Geen opsomming beskikbaar. Masters 2025-05-23T14:26:00Z 2025-05-23T14:26:00Z 2025-03 Thesis https://scholar.sun.ac.za/handle/10019.1/132111 Stellenbosch University xi, 159 pages : illustrations application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Pavements, Bituminous Shear (Mechanics) Fillers (Materials) Asphalt concrete UCTD Cotterrell, Ross Glenn Influence of binder and active filler content on the shear properties of high ra bitumen stabilised materials |
| title | Influence of binder and active filler content on the shear properties of high ra bitumen stabilised materials |
| title_full | Influence of binder and active filler content on the shear properties of high ra bitumen stabilised materials |
| title_fullStr | Influence of binder and active filler content on the shear properties of high ra bitumen stabilised materials |
| title_full_unstemmed | Influence of binder and active filler content on the shear properties of high ra bitumen stabilised materials |
| title_short | Influence of binder and active filler content on the shear properties of high ra bitumen stabilised materials |
| title_sort | influence of binder and active filler content on the shear properties of high ra bitumen stabilised materials |
| topic | Pavements, Bituminous Shear (Mechanics) Fillers (Materials) Asphalt concrete UCTD |
| url | https://scholar.sun.ac.za/handle/10019.1/132111 |
| work_keys_str_mv | AT cotterrellrossglenn influenceofbinderandactivefillercontentontheshearpropertiesofhighrabitumenstabilisedmaterials |