Durability and Mechanical Properties of Roller Compacted Concrete Containing Coarse Reclaimed Asphalt Pavement
The feasibility of utilizing Reclaimed Asphalt Pavement (RAP) as a replacement for coarse aggregates in Roller Compacted Concretes (RCCs) was assessed. This replacement was performed in different volumetric percentages (25%, 50%, 75%, and 100%). During this process, RAP materials were subject to abr...
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| Format: | Article |
| Language: | English |
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RTU Press
2021-09-01
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| Series: | The Baltic Journal of Road and Bridge Engineering |
| Subjects: | |
| Online Access: | https://bjrbe-journals.rtu.lv/article/view/5119 |
| _version_ | 1818358004957839360 |
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| author | Alireza Mahdavi Abolfazl Mohammadzadeh Moghaddam Mohammad Dareyni |
| author_facet | Alireza Mahdavi Abolfazl Mohammadzadeh Moghaddam Mohammad Dareyni |
| author_sort | Alireza Mahdavi |
| collection | DOAJ |
| description | The feasibility of utilizing Reclaimed Asphalt Pavement (RAP) as a replacement for coarse aggregates in Roller Compacted Concretes (RCCs) was assessed. This replacement was performed in different volumetric percentages (25%, 50%, 75%, and 100%). During this process, RAP materials were subject to abrasion and impact in the Los Angeles drum and mixer before being added to the mixture. Compressive strength, splitting tensile strength, flexural strength, crack propagation, Ultrasonic Pulse Velocity (UPV), electrical resistivity, density, and water absorption (in 7, 28, and 90 days of age) tests were done on all mixtures. Results show that utilizing RAP in RCC can cause a drop in the mechanical properties, but it has positive effects on crack propagation of the specimens due to their increased toughness. Increasing the amount of RAP in the mixtures has increased their electrical resistivity, likely owing to the hydrophobic properties of RAP, which causes prevention from connecting pores to each other. The relationship between the mechanical properties and UPV of the mixtures was analysed using regression models. Moreover, one- and two-way ANOVA (analysis of variance) tests were performed on the results at a 95% confidence level. Finally, replacing the coarse aggregates with RAP only up to 75% is suggested if pre-processing is performed. |
| first_indexed | 2024-12-13T20:22:07Z |
| format | Article |
| id | doaj.art-e9449d4e17024eb7aa22d4d8200e7694 |
| institution | Directory Open Access Journal |
| issn | 1822-427X 1822-4288 |
| language | English |
| last_indexed | 2024-12-13T20:22:07Z |
| publishDate | 2021-09-01 |
| publisher | RTU Press |
| record_format | Article |
| series | The Baltic Journal of Road and Bridge Engineering |
| spelling | doaj.art-e9449d4e17024eb7aa22d4d8200e76942022-12-21T23:32:40ZengRTU PressThe Baltic Journal of Road and Bridge Engineering1822-427X1822-42882021-09-011638211010.7250/bjrbe.2021-16.5332666Durability and Mechanical Properties of Roller Compacted Concrete Containing Coarse Reclaimed Asphalt PavementAlireza Mahdavi0Abolfazl Mohammadzadeh Moghaddam1Mohammad Dareyni2Department of Civil Engineering, Ferdowsi University of Mashhad, Mashhad, IranDepartment of Civil Engineering, Ferdowsi University of Mashhad, Mashhad, IranDepartment of Civil Engineering, Ferdowsi University of Mashhad, Mashhad, IranThe feasibility of utilizing Reclaimed Asphalt Pavement (RAP) as a replacement for coarse aggregates in Roller Compacted Concretes (RCCs) was assessed. This replacement was performed in different volumetric percentages (25%, 50%, 75%, and 100%). During this process, RAP materials were subject to abrasion and impact in the Los Angeles drum and mixer before being added to the mixture. Compressive strength, splitting tensile strength, flexural strength, crack propagation, Ultrasonic Pulse Velocity (UPV), electrical resistivity, density, and water absorption (in 7, 28, and 90 days of age) tests were done on all mixtures. Results show that utilizing RAP in RCC can cause a drop in the mechanical properties, but it has positive effects on crack propagation of the specimens due to their increased toughness. Increasing the amount of RAP in the mixtures has increased their electrical resistivity, likely owing to the hydrophobic properties of RAP, which causes prevention from connecting pores to each other. The relationship between the mechanical properties and UPV of the mixtures was analysed using regression models. Moreover, one- and two-way ANOVA (analysis of variance) tests were performed on the results at a 95% confidence level. Finally, replacing the coarse aggregates with RAP only up to 75% is suggested if pre-processing is performed.https://bjrbe-journals.rtu.lv/article/view/5119crack propagationelectrical resistivitymechanical propertiespre-processed reclaimed asphalt pavementroller compacted concreteultrasonic pulse velocity |
| spellingShingle | Alireza Mahdavi Abolfazl Mohammadzadeh Moghaddam Mohammad Dareyni Durability and Mechanical Properties of Roller Compacted Concrete Containing Coarse Reclaimed Asphalt Pavement The Baltic Journal of Road and Bridge Engineering crack propagation electrical resistivity mechanical properties pre-processed reclaimed asphalt pavement roller compacted concrete ultrasonic pulse velocity |
| title | Durability and Mechanical Properties of Roller Compacted Concrete Containing Coarse Reclaimed Asphalt Pavement |
| title_full | Durability and Mechanical Properties of Roller Compacted Concrete Containing Coarse Reclaimed Asphalt Pavement |
| title_fullStr | Durability and Mechanical Properties of Roller Compacted Concrete Containing Coarse Reclaimed Asphalt Pavement |
| title_full_unstemmed | Durability and Mechanical Properties of Roller Compacted Concrete Containing Coarse Reclaimed Asphalt Pavement |
| title_short | Durability and Mechanical Properties of Roller Compacted Concrete Containing Coarse Reclaimed Asphalt Pavement |
| title_sort | durability and mechanical properties of roller compacted concrete containing coarse reclaimed asphalt pavement |
| topic | crack propagation electrical resistivity mechanical properties pre-processed reclaimed asphalt pavement roller compacted concrete ultrasonic pulse velocity |
| url | https://bjrbe-journals.rtu.lv/article/view/5119 |
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