Effects of Coarse Aggregate Rap Content on the Mechanical and Shear Performance of HMA by the UPT Method
In recent years, the use of materials derived from recycled asphalt has attracted the attention of airfield and highway construction researchers. Since the making of these products is economically cost-effective, one idea about how to use them is to use coarse-grained crumbs from recycled Asphalt Pa...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Sciendo
2023-06-01
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| Series: | Slovak Journal of Civil Engineering |
| Subjects: | |
| Online Access: | https://doi.org/10.2478/sjce-2023-0014 |
| _version_ | 1797788914793054208 |
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| author | Khabiri Mohammad Mehdi Saboohi Meysam |
| author_facet | Khabiri Mohammad Mehdi Saboohi Meysam |
| author_sort | Khabiri Mohammad Mehdi |
| collection | DOAJ |
| description | In recent years, the use of materials derived from recycled asphalt has attracted the attention of airfield and highway construction researchers. Since the making of these products is economically cost-effective, one idea about how to use them is to use coarse-grained crumbs from recycled Asphalt Pavement (RAP), which are agglomerates that can be found in coarse RAP, as a replacement for virgin asphalt.The goal of the current study is to investigate the performance of hot mix asphalt created with various percents of RAP. The punching shear strength of cylindrical specimens versus the penetration of steel rods with fixed and determined diameters into an asphalt specimen is one of the tests used to study the shear strength of asphalt. Other typical tests include a test of the structural strength and resilient modulus with two rectangular and sinusoidal loading shapes, respectively, as well as the specimen's strength against different temperatures of asphalt mixtures containing 10, 20, and 30% coarse-grained RAP. The results show that the resilient strength of the samples with a maximum 30% coarse-grained RAP is within reasonable limits. Furthermore, the semi-sinusoidal loading has a higher resilience modulus than rectangular loading. It is also observed during uniaxial penetration testing (UPT) that increasing the RAP increases the penetration of the steel rod, thereby implying that the shear strength of the asphalt has decreased. |
| first_indexed | 2024-03-13T01:43:20Z |
| format | Article |
| id | doaj.art-0413456a71454a1ca2a89dcdf6ecb833 |
| institution | Directory Open Access Journal |
| issn | 1338-3973 |
| language | English |
| last_indexed | 2024-03-13T01:43:20Z |
| publishDate | 2023-06-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Slovak Journal of Civil Engineering |
| spelling | doaj.art-0413456a71454a1ca2a89dcdf6ecb8332023-07-03T10:22:12ZengSciendoSlovak Journal of Civil Engineering1338-39732023-06-01312707810.2478/sjce-2023-0014Effects of Coarse Aggregate Rap Content on the Mechanical and Shear Performance of HMA by the UPT MethodKhabiri Mohammad Mehdi0Saboohi Meysam11Department of Civil Engineering, Yazd University, Yazd, Iran1Department of Civil Engineering, Yazd University, Yazd, IranIn recent years, the use of materials derived from recycled asphalt has attracted the attention of airfield and highway construction researchers. Since the making of these products is economically cost-effective, one idea about how to use them is to use coarse-grained crumbs from recycled Asphalt Pavement (RAP), which are agglomerates that can be found in coarse RAP, as a replacement for virgin asphalt.The goal of the current study is to investigate the performance of hot mix asphalt created with various percents of RAP. The punching shear strength of cylindrical specimens versus the penetration of steel rods with fixed and determined diameters into an asphalt specimen is one of the tests used to study the shear strength of asphalt. Other typical tests include a test of the structural strength and resilient modulus with two rectangular and sinusoidal loading shapes, respectively, as well as the specimen's strength against different temperatures of asphalt mixtures containing 10, 20, and 30% coarse-grained RAP. The results show that the resilient strength of the samples with a maximum 30% coarse-grained RAP is within reasonable limits. Furthermore, the semi-sinusoidal loading has a higher resilience modulus than rectangular loading. It is also observed during uniaxial penetration testing (UPT) that increasing the RAP increases the penetration of the steel rod, thereby implying that the shear strength of the asphalt has decreased.https://doi.org/10.2478/sjce-2023-0014sustainable developmentreclaimed asphalt pavement (rap)uniaxial shear-strength penetrationairfield and road pavements |
| spellingShingle | Khabiri Mohammad Mehdi Saboohi Meysam Effects of Coarse Aggregate Rap Content on the Mechanical and Shear Performance of HMA by the UPT Method Slovak Journal of Civil Engineering sustainable development reclaimed asphalt pavement (rap) uniaxial shear-strength penetration airfield and road pavements |
| title | Effects of Coarse Aggregate Rap Content on the Mechanical and Shear Performance of HMA by the UPT Method |
| title_full | Effects of Coarse Aggregate Rap Content on the Mechanical and Shear Performance of HMA by the UPT Method |
| title_fullStr | Effects of Coarse Aggregate Rap Content on the Mechanical and Shear Performance of HMA by the UPT Method |
| title_full_unstemmed | Effects of Coarse Aggregate Rap Content on the Mechanical and Shear Performance of HMA by the UPT Method |
| title_short | Effects of Coarse Aggregate Rap Content on the Mechanical and Shear Performance of HMA by the UPT Method |
| title_sort | effects of coarse aggregate rap content on the mechanical and shear performance of hma by the upt method |
| topic | sustainable development reclaimed asphalt pavement (rap) uniaxial shear-strength penetration airfield and road pavements |
| url | https://doi.org/10.2478/sjce-2023-0014 |
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