Development mechanism of aging depth of bitumen with increasing UV aging time
The UV aging of bitumen has a significant influence on the pavement service life, therefore, the research on UV aging has attracted increasing attention recently. It is known that the aging of bituminous pavements does not occur instantly through the full depth, instead, the aging depth of the bitum...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-12-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509522001899 |
| _version_ | 1818232445918511104 |
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| author | Yuanyuan Li Jianlin Feng Anqi Chen Shaopeng Wu Tao Bai Quantao Liu Hongbin Zhu |
| author_facet | Yuanyuan Li Jianlin Feng Anqi Chen Shaopeng Wu Tao Bai Quantao Liu Hongbin Zhu |
| author_sort | Yuanyuan Li |
| collection | DOAJ |
| description | The UV aging of bitumen has a significant influence on the pavement service life, therefore, the research on UV aging has attracted increasing attention recently. It is known that the aging of bituminous pavements does not occur instantly through the full depth, instead, the aging depth of the bitumen increases gradually with the increasing aging time. The limitation of the research is that the development mechanism of the aging depth of bitumen is not clearly known. Various thicknesses of bituminous membranes were prepared and the UV light transmission and absorption properties of bituminous membranes were investigated by UV–visible spectrophotometric, aiming to determine the penetration depth of UV light in bitumen after UV aging. It is concluded that, for the same bituminous membrane, the transmittance of UV light increases with the increase of the light wavelength; while the transmittance of UV light decreases significantly with the increase of bituminous membrane thickness. The penetration depth of UV light in bitumen increases gradually with increasing UV aging time. The relationship between UV light penetration depth in bitumen and aging depth of bitumen was analyzed, and UV aging models of three parts of bitumen were established to reveal the development mechanism of the UV aging depth of bitumen during UV aging. The increasing aging depth of bitumen is due to the increase of UV light penetration depth in bitumen, and the diffusion action of aging products from surface bitumen to deeper bitumen. During the UV aging, the bitumen actually comprises three parts, namely, the surface direct aging part (UV light can reach), the deeper diffusion aging part (aged by the diffusion action) and the internal unaged part (UV light and diffusion action can not affect). |
| first_indexed | 2024-12-12T11:06:24Z |
| format | Article |
| id | doaj.art-0bb7164792fa4c09a48e56b61f1e3f37 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-12-12T11:06:24Z |
| publishDate | 2022-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-0bb7164792fa4c09a48e56b61f1e3f372022-12-22T00:26:24ZengElsevierCase Studies in Construction Materials2214-50952022-12-0117e01057Development mechanism of aging depth of bitumen with increasing UV aging timeYuanyuan Li0Jianlin Feng1Anqi Chen2Shaopeng Wu3Tao Bai4Quantao Liu5Hongbin Zhu6School of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan 430205, Hubei, ChinaSchool of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan 430205, Hubei, ChinaState Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, Hubei, China; Corresponding author.State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, Hubei, ChinaSchool of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan 430205, Hubei, ChinaState Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, Hubei, ChinaSchool of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan 430205, Hubei, ChinaThe UV aging of bitumen has a significant influence on the pavement service life, therefore, the research on UV aging has attracted increasing attention recently. It is known that the aging of bituminous pavements does not occur instantly through the full depth, instead, the aging depth of the bitumen increases gradually with the increasing aging time. The limitation of the research is that the development mechanism of the aging depth of bitumen is not clearly known. Various thicknesses of bituminous membranes were prepared and the UV light transmission and absorption properties of bituminous membranes were investigated by UV–visible spectrophotometric, aiming to determine the penetration depth of UV light in bitumen after UV aging. It is concluded that, for the same bituminous membrane, the transmittance of UV light increases with the increase of the light wavelength; while the transmittance of UV light decreases significantly with the increase of bituminous membrane thickness. The penetration depth of UV light in bitumen increases gradually with increasing UV aging time. The relationship between UV light penetration depth in bitumen and aging depth of bitumen was analyzed, and UV aging models of three parts of bitumen were established to reveal the development mechanism of the UV aging depth of bitumen during UV aging. The increasing aging depth of bitumen is due to the increase of UV light penetration depth in bitumen, and the diffusion action of aging products from surface bitumen to deeper bitumen. During the UV aging, the bitumen actually comprises three parts, namely, the surface direct aging part (UV light can reach), the deeper diffusion aging part (aged by the diffusion action) and the internal unaged part (UV light and diffusion action can not affect).http://www.sciencedirect.com/science/article/pii/S2214509522001899Aging depthDevelopment mechanismPenetration depthBitumenUV light |
| spellingShingle | Yuanyuan Li Jianlin Feng Anqi Chen Shaopeng Wu Tao Bai Quantao Liu Hongbin Zhu Development mechanism of aging depth of bitumen with increasing UV aging time Case Studies in Construction Materials Aging depth Development mechanism Penetration depth Bitumen UV light |
| title | Development mechanism of aging depth of bitumen with increasing UV aging time |
| title_full | Development mechanism of aging depth of bitumen with increasing UV aging time |
| title_fullStr | Development mechanism of aging depth of bitumen with increasing UV aging time |
| title_full_unstemmed | Development mechanism of aging depth of bitumen with increasing UV aging time |
| title_short | Development mechanism of aging depth of bitumen with increasing UV aging time |
| title_sort | development mechanism of aging depth of bitumen with increasing uv aging time |
| topic | Aging depth Development mechanism Penetration depth Bitumen UV light |
| url | http://www.sciencedirect.com/science/article/pii/S2214509522001899 |
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