Utilization and Laboratory Evaluations of Mixes Containing Reclaimed Asphalt Pavement
| dc.contributor.advisor | Habtamu, Melese (PhD) | |
| dc.contributor.author | Tedros, Melese | |
| dc.date.accessioned | 2020-11-27T08:21:26Z | |
| dc.date.accessioned | 2023-11-11T12:53:38Z | |
| dc.date.available | 2020-11-27T08:21:26Z | |
| dc.date.available | 2023-11-11T12:53:38Z | |
| dc.date.issued | 2020-04 | |
| dc.description.abstract | Developing technologies in the construction industry, that provide sustainable solutions for future pavement condition is vital given the ever-increasing demand on the supply of bitumen and good quality pavement construction materials. Reclaimed asphalt pavement (RAP) is formed by cold milling, heating, softening and removal of the existing aged asphalt pavement, full-depth removal of plant waste hot mixed asphalt (HMA) materials. The research investigates to efficiently utilize and assess the impact of RAP in asphalt mixes. The evaluation involved Nine mix designs of control mixes and partially substituted mixes. Out of the nine mixes, four are used as control mixes and the other five are checked for the comparative advantages of partially substituted mixes. Laboratory testing was accomplished in the control mix with the production of Marshall compacted specimens to determine the performance of Hot Mix Asphalt using Marshall Mix design methods and parameters such as air voids, voids in mineral aggregate, voids filled with asphalt cement, Marshall Stability and flow are measured. Then after optimum bitumen content was obtained from the control mixes. Besides this, the optimum bitumen content is determined for a partially substituted mix. For the selected optimum bitumen content, Three samples from each mix which partially substitution of RAP with (10, 20, 30 and 40) % by weight of RAP. To examine the rutting resistance of the RAP samples rutting test were conducted by wheel tracking. In addition to this Indirect Tensile Strength tests were conducted to evaluate the moisture susceptibility of the sample and the three samples (i.e. 10%,20%,30%) prevails that the samples were not susceptible to water and the figures were above the specification (80%). Finally, the performance test result of laboratory RAP sample tests provided that using 20% by weight of RAP is strongly suggested. The laboratory result and other relevant parts of the thesis are illustrated. | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/12345678/23675 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | RAP | en_US |
| dc.subject | Indirect Tensile Strength | en_US |
| dc.subject | Marshal Stability | en_US |
| dc.subject | Flow | en_US |
| dc.subject | Rutting | en_US |
| dc.title | Utilization and Laboratory Evaluations of Mixes Containing Reclaimed Asphalt Pavement | en_US |
| dc.type | Thesis | en_US |