Characterization of Air Void in Porous Asphalt Mixture Using Image Techniques and Permeability Test
In this study, air void contents and distributions of porous asphalt mixtures along the vertical and horizontal directions were quantitatively measured on planar images. Air void contents were determined using some image techniques; while the permeability was measured by the falling head test. Two a...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/4560727 |
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| author | Zhongping Tang Fanglin Huang |
| author_facet | Zhongping Tang Fanglin Huang |
| author_sort | Zhongping Tang |
| collection | DOAJ |
| description | In this study, air void contents and distributions of porous asphalt mixtures along the vertical and horizontal directions were quantitatively measured on planar images. Air void contents were determined using some image techniques; while the permeability was measured by the falling head test. Two aggregate gradations (G1 and G2) and three blow numbers (30, 40, and 50) were chosen to explore the effects of gradation and compaction effort on the porosity and permeability. Results showed that porosities and permeabilities are symmetrically distributed along the middle of the specimens; the porosities and permeabilities got the minimum values around the middle zone. A finer gradation or a significant compaction effort generally led to a lower porosity and permeability coefficient. In the horizontal direction, the air void content showed an increasing trend from the outside layer to the inner layer, indicating the nonuniformity of porosity distribution. |
| format | Article |
| id | doaj-art-701ddd9e88df4cc0b12a1a0e5e6ef0e1 |
| institution | OA Journals |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-701ddd9e88df4cc0b12a1a0e5e6ef0e12025-08-20T02:06:15ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422021-01-01202110.1155/2021/45607274560727Characterization of Air Void in Porous Asphalt Mixture Using Image Techniques and Permeability TestZhongping Tang0Fanglin Huang1School of Civil Engineering, Central South University, 22 South Shaoshan Rd, Changsha, Hunan 410075, ChinaSchool of Civil Engineering, Central South University, 22 South Shaoshan Rd, Changsha, Hunan 410075, ChinaIn this study, air void contents and distributions of porous asphalt mixtures along the vertical and horizontal directions were quantitatively measured on planar images. Air void contents were determined using some image techniques; while the permeability was measured by the falling head test. Two aggregate gradations (G1 and G2) and three blow numbers (30, 40, and 50) were chosen to explore the effects of gradation and compaction effort on the porosity and permeability. Results showed that porosities and permeabilities are symmetrically distributed along the middle of the specimens; the porosities and permeabilities got the minimum values around the middle zone. A finer gradation or a significant compaction effort generally led to a lower porosity and permeability coefficient. In the horizontal direction, the air void content showed an increasing trend from the outside layer to the inner layer, indicating the nonuniformity of porosity distribution.http://dx.doi.org/10.1155/2021/4560727 |
| spellingShingle | Zhongping Tang Fanglin Huang Characterization of Air Void in Porous Asphalt Mixture Using Image Techniques and Permeability Test Advances in Materials Science and Engineering |
| title | Characterization of Air Void in Porous Asphalt Mixture Using Image Techniques and Permeability Test |
| title_full | Characterization of Air Void in Porous Asphalt Mixture Using Image Techniques and Permeability Test |
| title_fullStr | Characterization of Air Void in Porous Asphalt Mixture Using Image Techniques and Permeability Test |
| title_full_unstemmed | Characterization of Air Void in Porous Asphalt Mixture Using Image Techniques and Permeability Test |
| title_short | Characterization of Air Void in Porous Asphalt Mixture Using Image Techniques and Permeability Test |
| title_sort | characterization of air void in porous asphalt mixture using image techniques and permeability test |
| url | http://dx.doi.org/10.1155/2021/4560727 |
| work_keys_str_mv | AT zhongpingtang characterizationofairvoidinporousasphaltmixtureusingimagetechniquesandpermeabilitytest AT fanglinhuang characterizationofairvoidinporousasphaltmixtureusingimagetechniquesandpermeabilitytest |