Fracture properties of reclaimed asphalt pavement mixtures with rejuvenator
Reclaimed asphalt pavement (RAP) technology has been extensively promoted to conserve depleting virgin materials for asphalt mixtures. High RAP content is desirable from economic and environmental standpoints. However, RAP mixtures become too stiff and require modification such as rejuvenator. This...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English English |
| Published: |
2020 Elsevier Ltd. All rights reserved
2020
|
| Subjects: | |
| Online Access: | https://eprints.ums.edu.my/id/eprint/26761/1/Fracture%20properties%20of%20reclaimed%20asphalt%20pavement%20mixtures%20with%20rejuvenator.pdf https://eprints.ums.edu.my/id/eprint/26761/2/Fracture%20properties%20of%20reclaimed%20asphalt%20pavement%20mixtures%20with%20rejuvenator1.pdf |
| _version_ | 1825714049549074432 |
|---|---|
| author | J.K. Ong Lillian @ Lilia Gungat M.O. Hamzah |
| author_facet | J.K. Ong Lillian @ Lilia Gungat M.O. Hamzah |
| author_sort | J.K. Ong |
| collection | UMS |
| description | Reclaimed asphalt pavement (RAP) technology has been extensively promoted to conserve depleting virgin materials for asphalt mixtures. High RAP content is desirable from economic and environmental standpoints. However, RAP mixtures become too stiff and require modification such as rejuvenator. This paper presents the evaluation on the fracture characteristics of mixtures prepared with 50% and 70% RAP, with and without rejuvenator that were subjected to indirect tensile strength (ITS) and notched semi-circular bending (SCB) tests. The fractured surfaces of the tested specimens were quantified using geospatial imaging technique to identify the proportion contribution to failure, namely cohesive, adhesive and broken aggregates. The results showed that the fractured rejuvenated mixtures were predominantly of the cohesive type when compared with the non-rejuvenated mixtures. On the other hand, the failure modes of non-rejuvenated mixtures were of the adhesive and aggregate failure types. The measured ITS at two temperatures corresponded with the expected damage trends. Similar behaviour was found in the derived fracture energy and pre-peak slope that were obtained from the SCB pure tensile and tensile-shear load–displacement curves. The findings showed that the fracture properties of rejuvenated mixtures performed comparably with virgin mixtures in terms of fracture toughness, tensile strength and proportion of damage contribution. |
| first_indexed | 2024-03-06T03:06:01Z |
| format | Article |
| id | ums.eprints-26761 |
| institution | Universiti Malaysia Sabah |
| language | English English |
| last_indexed | 2024-03-06T03:06:01Z |
| publishDate | 2020 |
| publisher | 2020 Elsevier Ltd. All rights reserved |
| record_format | dspace |
| spelling | ums.eprints-267612021-04-15T00:24:28Z https://eprints.ums.edu.my/id/eprint/26761/ Fracture properties of reclaimed asphalt pavement mixtures with rejuvenator J.K. Ong Lillian @ Lilia Gungat M.O. Hamzah T Technology (General) TA Engineering (General). Civil engineering (General) Reclaimed asphalt pavement (RAP) technology has been extensively promoted to conserve depleting virgin materials for asphalt mixtures. High RAP content is desirable from economic and environmental standpoints. However, RAP mixtures become too stiff and require modification such as rejuvenator. This paper presents the evaluation on the fracture characteristics of mixtures prepared with 50% and 70% RAP, with and without rejuvenator that were subjected to indirect tensile strength (ITS) and notched semi-circular bending (SCB) tests. The fractured surfaces of the tested specimens were quantified using geospatial imaging technique to identify the proportion contribution to failure, namely cohesive, adhesive and broken aggregates. The results showed that the fractured rejuvenated mixtures were predominantly of the cohesive type when compared with the non-rejuvenated mixtures. On the other hand, the failure modes of non-rejuvenated mixtures were of the adhesive and aggregate failure types. The measured ITS at two temperatures corresponded with the expected damage trends. Similar behaviour was found in the derived fracture energy and pre-peak slope that were obtained from the SCB pure tensile and tensile-shear load–displacement curves. The findings showed that the fracture properties of rejuvenated mixtures performed comparably with virgin mixtures in terms of fracture toughness, tensile strength and proportion of damage contribution. 2020 Elsevier Ltd. All rights reserved 2020 Article PeerReviewed text en https://eprints.ums.edu.my/id/eprint/26761/1/Fracture%20properties%20of%20reclaimed%20asphalt%20pavement%20mixtures%20with%20rejuvenator.pdf text en https://eprints.ums.edu.my/id/eprint/26761/2/Fracture%20properties%20of%20reclaimed%20asphalt%20pavement%20mixtures%20with%20rejuvenator1.pdf J.K. Ong and Lillian @ Lilia Gungat and M.O. Hamzah (2020) Fracture properties of reclaimed asphalt pavement mixtures with rejuvenator. Construction and Building Materials, 259. pp. 1-10. ISSN 0950-0618 https://doi.org/10.1016/j.conbuildmat.2020.119679 |
| spellingShingle | T Technology (General) TA Engineering (General). Civil engineering (General) J.K. Ong Lillian @ Lilia Gungat M.O. Hamzah Fracture properties of reclaimed asphalt pavement mixtures with rejuvenator |
| title | Fracture properties of reclaimed asphalt pavement mixtures with rejuvenator |
| title_full | Fracture properties of reclaimed asphalt pavement mixtures with rejuvenator |
| title_fullStr | Fracture properties of reclaimed asphalt pavement mixtures with rejuvenator |
| title_full_unstemmed | Fracture properties of reclaimed asphalt pavement mixtures with rejuvenator |
| title_short | Fracture properties of reclaimed asphalt pavement mixtures with rejuvenator |
| title_sort | fracture properties of reclaimed asphalt pavement mixtures with rejuvenator |
| topic | T Technology (General) TA Engineering (General). Civil engineering (General) |
| url | https://eprints.ums.edu.my/id/eprint/26761/1/Fracture%20properties%20of%20reclaimed%20asphalt%20pavement%20mixtures%20with%20rejuvenator.pdf https://eprints.ums.edu.my/id/eprint/26761/2/Fracture%20properties%20of%20reclaimed%20asphalt%20pavement%20mixtures%20with%20rejuvenator1.pdf |
| work_keys_str_mv | AT jkong fracturepropertiesofreclaimedasphaltpavementmixtureswithrejuvenator AT lillianliliagungat fracturepropertiesofreclaimedasphaltpavementmixtureswithrejuvenator AT mohamzah fracturepropertiesofreclaimedasphaltpavementmixtureswithrejuvenator |