Study on Relaxation Damage Properties of High Viscosity Asphalt Sand under Uniaxial Compression
Laboratory investigations of relaxation damage properties of high viscosity asphalt sand (HVAS) by uniaxial compression tests and modified generalized Maxwell model (GMM) to simulate viscoelastic characteristics coupling damage were carried out. A series of uniaxial compression relaxation tests were...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/1498480 |
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| author | Yazhen Sun Zhangyi Gu Jinchang Wang Chenze Fang Xuezhong Yuan |
| author_facet | Yazhen Sun Zhangyi Gu Jinchang Wang Chenze Fang Xuezhong Yuan |
| author_sort | Yazhen Sun |
| collection | DOAJ |
| description | Laboratory investigations of relaxation damage properties of high viscosity asphalt sand (HVAS) by uniaxial compression tests and modified generalized Maxwell model (GMM) to simulate viscoelastic characteristics coupling damage were carried out. A series of uniaxial compression relaxation tests were performed on HVAS specimens at different temperatures, loading rates, and constant levels of input strain. The results of the tests show that the peak point of relaxation modulus is highly influenced by the loading rate in the first half of an L-shaped curve, while the relaxation modulus is almost constant in the second half of the curve. It is suggested that for the HVAS relaxation tests, the temperature should be no less than −15°C. The GMM is used to determine the viscoelastic responses, the Weibull distribution function is used to characterize the damage of the HVAS and its evolution, and the modified GMM is a coupling of the two models. In this paper, the modified GMM is implemented through a secondary development with the USDFLD subroutine to analyze the relaxation damage process and improve the linear viscoelastic model in ABAQUS. Results show that the numerical method of coupling damage provides a better approximation of the test curve over almost the whole range. The results also show that the USDFLD subroutine can effectively predict the relaxation damage process of HVAS and can provide a theoretical support for crack control of asphalt pavements. |
| format | Article |
| id | doaj-art-1aac0fddba1d4182be95a5b413eaa6dd |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-1aac0fddba1d4182be95a5b413eaa6dd2025-02-03T01:22:55ZengWileyAdvances in Civil Engineering1687-80861687-80942018-01-01201810.1155/2018/14984801498480Study on Relaxation Damage Properties of High Viscosity Asphalt Sand under Uniaxial CompressionYazhen Sun0Zhangyi Gu1Jinchang Wang2Chenze Fang3Xuezhong Yuan4School of Transportation Engineering, Shenyang Jianzhu University, Shenyang, ChinaSchool of Science, Shenyang Jianzhu University, Shenyang, ChinaInstitute of Transportation Engineering, Zhejiang University, Hangzhou, ChinaSchool of Transportation Engineering, Shenyang Jianzhu University, Shenyang, ChinaSchool of Science, Shenyang Jianzhu University, Shenyang, ChinaLaboratory investigations of relaxation damage properties of high viscosity asphalt sand (HVAS) by uniaxial compression tests and modified generalized Maxwell model (GMM) to simulate viscoelastic characteristics coupling damage were carried out. A series of uniaxial compression relaxation tests were performed on HVAS specimens at different temperatures, loading rates, and constant levels of input strain. The results of the tests show that the peak point of relaxation modulus is highly influenced by the loading rate in the first half of an L-shaped curve, while the relaxation modulus is almost constant in the second half of the curve. It is suggested that for the HVAS relaxation tests, the temperature should be no less than −15°C. The GMM is used to determine the viscoelastic responses, the Weibull distribution function is used to characterize the damage of the HVAS and its evolution, and the modified GMM is a coupling of the two models. In this paper, the modified GMM is implemented through a secondary development with the USDFLD subroutine to analyze the relaxation damage process and improve the linear viscoelastic model in ABAQUS. Results show that the numerical method of coupling damage provides a better approximation of the test curve over almost the whole range. The results also show that the USDFLD subroutine can effectively predict the relaxation damage process of HVAS and can provide a theoretical support for crack control of asphalt pavements.http://dx.doi.org/10.1155/2018/1498480 |
| spellingShingle | Yazhen Sun Zhangyi Gu Jinchang Wang Chenze Fang Xuezhong Yuan Study on Relaxation Damage Properties of High Viscosity Asphalt Sand under Uniaxial Compression Advances in Civil Engineering |
| title | Study on Relaxation Damage Properties of High Viscosity Asphalt Sand under Uniaxial Compression |
| title_full | Study on Relaxation Damage Properties of High Viscosity Asphalt Sand under Uniaxial Compression |
| title_fullStr | Study on Relaxation Damage Properties of High Viscosity Asphalt Sand under Uniaxial Compression |
| title_full_unstemmed | Study on Relaxation Damage Properties of High Viscosity Asphalt Sand under Uniaxial Compression |
| title_short | Study on Relaxation Damage Properties of High Viscosity Asphalt Sand under Uniaxial Compression |
| title_sort | study on relaxation damage properties of high viscosity asphalt sand under uniaxial compression |
| url | http://dx.doi.org/10.1155/2018/1498480 |
| work_keys_str_mv | AT yazhensun studyonrelaxationdamagepropertiesofhighviscosityasphaltsandunderuniaxialcompression AT zhangyigu studyonrelaxationdamagepropertiesofhighviscosityasphaltsandunderuniaxialcompression AT jinchangwang studyonrelaxationdamagepropertiesofhighviscosityasphaltsandunderuniaxialcompression AT chenzefang studyonrelaxationdamagepropertiesofhighviscosityasphaltsandunderuniaxialcompression AT xuezhongyuan studyonrelaxationdamagepropertiesofhighviscosityasphaltsandunderuniaxialcompression |