Analysis of Coupling Effect and Heavy Load of High-Temperature Stability of Asphalt Mixture
To study the variation in the high-temperature stability of asphalt mixtures under extreme high temperature and heavy load, rut tests and analyses were carried out with both the APA (asphalt pavement analyzer) test and CLWT (Chinese wheel load test). In this paper, the relationship model between the...
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2022/5722752 |
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| author | Lu Bai Yong-sheng Zhang Dai-song Luo |
| author_facet | Lu Bai Yong-sheng Zhang Dai-song Luo |
| author_sort | Lu Bai |
| collection | DOAJ |
| description | To study the variation in the high-temperature stability of asphalt mixtures under extreme high temperature and heavy load, rut tests and analyses were carried out with both the APA (asphalt pavement analyzer) test and CLWT (Chinese wheel load test). In this paper, the relationship model between the dynamic stability of asphalt mixtures and the temperature, load, and binder viscosity is established; this model provides a method for evaluating the temperature stability of asphalt mixtures under nonstandard temperature conditions. The results revealed that the dynamic viscosity of an SBS-modified asphalt binder showed an exponential relationship with temperatures varying from 55°C to 70°C. Under a temperature condition from 55°C to 70°C and a pressure of 0.7 MPa, the dynamic stability of the asphalt mixture increased linearly with increasing temperature. The dynamic stability of the asphalt mixture exhibited a temperature inflection point at 65°C, and the decay rate was increased. The APA test results, which were used to evaluate the anti-rutting performance of the asphalt mixture on the basis of the ratio of the rutting depth difference to action times from 6000 to 8000, showed a good correlation with the CLWT test results. With a high temperature of 65°C and the pressure increasing from 0.7 MPa to 1.3 MPa, the dynamic stability of the asphalt mixture exhibited exponential decay. The variation laws of dynamic stability with temperature, load, and asphalt binder viscosity were revealed by complex logarithmic variation. |
| format | Article |
| id | doaj-art-176664bcb9254461b7171ca68d5a88a3 |
| institution | Kabale University |
| issn | 1687-8442 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-176664bcb9254461b7171ca68d5a88a32025-02-03T01:10:36ZengWileyAdvances in Materials Science and Engineering1687-84422022-01-01202210.1155/2022/5722752Analysis of Coupling Effect and Heavy Load of High-Temperature Stability of Asphalt MixtureLu Bai0Yong-sheng Zhang1Dai-song Luo2School of Civil EngineeringChina Academy of Transportation ScienceChina Academy of Transportation ScienceTo study the variation in the high-temperature stability of asphalt mixtures under extreme high temperature and heavy load, rut tests and analyses were carried out with both the APA (asphalt pavement analyzer) test and CLWT (Chinese wheel load test). In this paper, the relationship model between the dynamic stability of asphalt mixtures and the temperature, load, and binder viscosity is established; this model provides a method for evaluating the temperature stability of asphalt mixtures under nonstandard temperature conditions. The results revealed that the dynamic viscosity of an SBS-modified asphalt binder showed an exponential relationship with temperatures varying from 55°C to 70°C. Under a temperature condition from 55°C to 70°C and a pressure of 0.7 MPa, the dynamic stability of the asphalt mixture increased linearly with increasing temperature. The dynamic stability of the asphalt mixture exhibited a temperature inflection point at 65°C, and the decay rate was increased. The APA test results, which were used to evaluate the anti-rutting performance of the asphalt mixture on the basis of the ratio of the rutting depth difference to action times from 6000 to 8000, showed a good correlation with the CLWT test results. With a high temperature of 65°C and the pressure increasing from 0.7 MPa to 1.3 MPa, the dynamic stability of the asphalt mixture exhibited exponential decay. The variation laws of dynamic stability with temperature, load, and asphalt binder viscosity were revealed by complex logarithmic variation.http://dx.doi.org/10.1155/2022/5722752 |
| spellingShingle | Lu Bai Yong-sheng Zhang Dai-song Luo Analysis of Coupling Effect and Heavy Load of High-Temperature Stability of Asphalt Mixture Advances in Materials Science and Engineering |
| title | Analysis of Coupling Effect and Heavy Load of High-Temperature Stability of Asphalt Mixture |
| title_full | Analysis of Coupling Effect and Heavy Load of High-Temperature Stability of Asphalt Mixture |
| title_fullStr | Analysis of Coupling Effect and Heavy Load of High-Temperature Stability of Asphalt Mixture |
| title_full_unstemmed | Analysis of Coupling Effect and Heavy Load of High-Temperature Stability of Asphalt Mixture |
| title_short | Analysis of Coupling Effect and Heavy Load of High-Temperature Stability of Asphalt Mixture |
| title_sort | analysis of coupling effect and heavy load of high temperature stability of asphalt mixture |
| url | http://dx.doi.org/10.1155/2022/5722752 |
| work_keys_str_mv | AT lubai analysisofcouplingeffectandheavyloadofhightemperaturestabilityofasphaltmixture AT yongshengzhang analysisofcouplingeffectandheavyloadofhightemperaturestabilityofasphaltmixture AT daisongluo analysisofcouplingeffectandheavyloadofhightemperaturestabilityofasphaltmixture |