Moisture Susceptibility of Warm Mix Asphalt (WMA) with an Organic Wax Additive Based on X-Ray Computed Tomography (CT) Technology
The warm mix asphalt was fabricated with different moisture contents (0%, 1%, 2%, and 3%) of limestone aggregates using the Superpave gyratory compactor. The moisture susceptibility of asphalt mixtures with an organic wax additive RH was studied. The samples were compacted and tested using the modif...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/7101982 |
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| author | Jie Ji Hui Yao Zhikai Yuan Zhi Suo Ying Xu Pengfei Li Zhanping You |
| author_facet | Jie Ji Hui Yao Zhikai Yuan Zhi Suo Ying Xu Pengfei Li Zhanping You |
| author_sort | Jie Ji |
| collection | DOAJ |
| description | The warm mix asphalt was fabricated with different moisture contents (0%, 1%, 2%, and 3%) of limestone aggregates using the Superpave gyratory compactor. The moisture susceptibility of asphalt mixtures with an organic wax additive RH was studied. The samples were compacted and tested using the modified Lottman test AASHTO T283, and the X-ray computed tomography technology was used to capture the internal structure images before and after the freeze-thaw cycles. The test results show that the air voids were distributed in the size range of 0–5 mm3 and 5–10 mm3. The number of air voids decreased with the increase of air void size and increased after freeze-thaw cycles. The air void content can be influenced by the residual moisture in aggregates. The higher the moisture content of aggregates is, the larger the air void content is. So, the air void content is likely to be sensitive to moisture damage. The increase ratio of the air void and moisture content of aggregates had good correlation with the indirect tensile strength and tensile strength ratio of the samples. The indirect tensile strength and tensile strength ratio of the samples decreased linearly, and the samples were sensitive to the moisture damage with the increases of increase ratio of the air void/moisture content in aggregates. |
| format | Article |
| id | doaj-art-5eae50a87fe14248a59edcf738c755fb |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-5eae50a87fe14248a59edcf738c755fb2025-02-03T01:30:59ZengWileyAdvances in Civil Engineering1687-80861687-80942019-01-01201910.1155/2019/71019827101982Moisture Susceptibility of Warm Mix Asphalt (WMA) with an Organic Wax Additive Based on X-Ray Computed Tomography (CT) TechnologyJie Ji0Hui Yao1Zhikai Yuan2Zhi Suo3Ying Xu4Pengfei Li5Zhanping You6School of Civil Engineering and Transportation, Beijing University of Civil Engineering and Architecture, No. 1, Zhanlanguan Rd., Xicheng District, Beijing 100044, ChinaBeijing Key Laboratory of Traffic Engineering, College of Metropolitan Transportation, Beijing University of Technology, No. 100, Pingleyuan, Chaoyang, Beijing 100124, ChinaSchool of Civil Engineering and Transportation, Beijing University of Civil Engineering and Architecture, No. 1, Zhanlanguan Rd., Xicheng District, Beijing 100044, ChinaBeijing Advanced Innovation Center for Future Urban Design, Beijing University of Civil Engineering and Architecture, No. 1, Zhanlanguan Rd., Xicheng District, Beijing 100044, ChinaBeijing Advanced Innovation Center for Future Urban Design, Beijing University of Civil Engineering and Architecture, No. 1, Zhanlanguan Rd., Xicheng District, Beijing 100044, ChinaBeijing Guodaotong Highway Design and Research Institute Co., Ltd., No. 23, Huaibaishu Rd., Xicheng District, Beijing 100053, ChinaDepartment of Civil and Environmental Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931, USAThe warm mix asphalt was fabricated with different moisture contents (0%, 1%, 2%, and 3%) of limestone aggregates using the Superpave gyratory compactor. The moisture susceptibility of asphalt mixtures with an organic wax additive RH was studied. The samples were compacted and tested using the modified Lottman test AASHTO T283, and the X-ray computed tomography technology was used to capture the internal structure images before and after the freeze-thaw cycles. The test results show that the air voids were distributed in the size range of 0–5 mm3 and 5–10 mm3. The number of air voids decreased with the increase of air void size and increased after freeze-thaw cycles. The air void content can be influenced by the residual moisture in aggregates. The higher the moisture content of aggregates is, the larger the air void content is. So, the air void content is likely to be sensitive to moisture damage. The increase ratio of the air void and moisture content of aggregates had good correlation with the indirect tensile strength and tensile strength ratio of the samples. The indirect tensile strength and tensile strength ratio of the samples decreased linearly, and the samples were sensitive to the moisture damage with the increases of increase ratio of the air void/moisture content in aggregates.http://dx.doi.org/10.1155/2019/7101982 |
| spellingShingle | Jie Ji Hui Yao Zhikai Yuan Zhi Suo Ying Xu Pengfei Li Zhanping You Moisture Susceptibility of Warm Mix Asphalt (WMA) with an Organic Wax Additive Based on X-Ray Computed Tomography (CT) Technology Advances in Civil Engineering |
| title | Moisture Susceptibility of Warm Mix Asphalt (WMA) with an Organic Wax Additive Based on X-Ray Computed Tomography (CT) Technology |
| title_full | Moisture Susceptibility of Warm Mix Asphalt (WMA) with an Organic Wax Additive Based on X-Ray Computed Tomography (CT) Technology |
| title_fullStr | Moisture Susceptibility of Warm Mix Asphalt (WMA) with an Organic Wax Additive Based on X-Ray Computed Tomography (CT) Technology |
| title_full_unstemmed | Moisture Susceptibility of Warm Mix Asphalt (WMA) with an Organic Wax Additive Based on X-Ray Computed Tomography (CT) Technology |
| title_short | Moisture Susceptibility of Warm Mix Asphalt (WMA) with an Organic Wax Additive Based on X-Ray Computed Tomography (CT) Technology |
| title_sort | moisture susceptibility of warm mix asphalt wma with an organic wax additive based on x ray computed tomography ct technology |
| url | http://dx.doi.org/10.1155/2019/7101982 |
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