Experimental Study on Freeze-Thaw Effects on Creep Characteristics of Rubber Concrete
Crumb Rubber Concrete (CRC) can exhibit high freeze-thaw resistance, but its long-term creep behavior under various freeze-thaw conditions remains unclear, which is essential for the safety of pavement engineering in the severe cold zone. In this study, the freeze-thaw effects on the creep behavior...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-01-01
|
| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2022/9182729 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832556660353138688 |
|---|---|
| author | Qi Li Fei Xu Hemin Zheng Junhao Shi Jianyu Zhang |
| author_facet | Qi Li Fei Xu Hemin Zheng Junhao Shi Jianyu Zhang |
| author_sort | Qi Li |
| collection | DOAJ |
| description | Crumb Rubber Concrete (CRC) can exhibit high freeze-thaw resistance, but its long-term creep behavior under various freeze-thaw conditions remains unclear, which is essential for the safety of pavement engineering in the severe cold zone. In this study, the freeze-thaw effects on the creep behavior of CRC under different stress levels were systematically analyzed by testing the compressive strength, the uniaxial creep under different stress levels, and the dynamic elastic modulus. To simulate real conditions of the road environment in the cold area, the lowest temperature of −20°C, six freeze-thaw cycles of 0, 30, 60, 90, 120, and 150, and seven different stress levels of 0.4, 0.5, 0.6, 0.7, 0.8, and 0.9 of the compressive strength were employed in this study. The test results showed that the mass loss rate was 6%–11.2% and the compressive strength decreased by 6.51%–47% after 30–150 freeze-thaw cycles. When the stress level reached its critical value, the relative dynamic elastic modulus decreased with the number of freeze-thaw cycles. After 150 freeze-thaw cycles, failure did not appear when the stress level was lower than 50%, above which the creep failure was determined by the stress level and the number of the freeze-thaw cycles. Meanwhile, it was found that the cracking and interfacial debonding between the matrix and the crumb rubber particle were the main reasons for the degradation of CRC creep performance. Finally, a Weibull distribution-based empirical creep damage model was established to predict the failure of CRC, which can enhance its application to related engineering. |
| format | Article |
| id | doaj-art-251648c8f784444f9fca92ab658592a9 |
| 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-251648c8f784444f9fca92ab658592a92025-02-03T05:44:38ZengWileyAdvances in Materials Science and Engineering1687-84422022-01-01202210.1155/2022/9182729Experimental Study on Freeze-Thaw Effects on Creep Characteristics of Rubber ConcreteQi Li0Fei Xu1Hemin Zheng2Junhao Shi3Jianyu Zhang4School of Civil EngineeringState Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil MechanicsChina Railway Design Group Co.,Ltd.School of Civil EngineeringKey Laboratory of Large Structure Health Monitoring and ControlCrumb Rubber Concrete (CRC) can exhibit high freeze-thaw resistance, but its long-term creep behavior under various freeze-thaw conditions remains unclear, which is essential for the safety of pavement engineering in the severe cold zone. In this study, the freeze-thaw effects on the creep behavior of CRC under different stress levels were systematically analyzed by testing the compressive strength, the uniaxial creep under different stress levels, and the dynamic elastic modulus. To simulate real conditions of the road environment in the cold area, the lowest temperature of −20°C, six freeze-thaw cycles of 0, 30, 60, 90, 120, and 150, and seven different stress levels of 0.4, 0.5, 0.6, 0.7, 0.8, and 0.9 of the compressive strength were employed in this study. The test results showed that the mass loss rate was 6%–11.2% and the compressive strength decreased by 6.51%–47% after 30–150 freeze-thaw cycles. When the stress level reached its critical value, the relative dynamic elastic modulus decreased with the number of freeze-thaw cycles. After 150 freeze-thaw cycles, failure did not appear when the stress level was lower than 50%, above which the creep failure was determined by the stress level and the number of the freeze-thaw cycles. Meanwhile, it was found that the cracking and interfacial debonding between the matrix and the crumb rubber particle were the main reasons for the degradation of CRC creep performance. Finally, a Weibull distribution-based empirical creep damage model was established to predict the failure of CRC, which can enhance its application to related engineering.http://dx.doi.org/10.1155/2022/9182729 |
| spellingShingle | Qi Li Fei Xu Hemin Zheng Junhao Shi Jianyu Zhang Experimental Study on Freeze-Thaw Effects on Creep Characteristics of Rubber Concrete Advances in Materials Science and Engineering |
| title | Experimental Study on Freeze-Thaw Effects on Creep Characteristics of Rubber Concrete |
| title_full | Experimental Study on Freeze-Thaw Effects on Creep Characteristics of Rubber Concrete |
| title_fullStr | Experimental Study on Freeze-Thaw Effects on Creep Characteristics of Rubber Concrete |
| title_full_unstemmed | Experimental Study on Freeze-Thaw Effects on Creep Characteristics of Rubber Concrete |
| title_short | Experimental Study on Freeze-Thaw Effects on Creep Characteristics of Rubber Concrete |
| title_sort | experimental study on freeze thaw effects on creep characteristics of rubber concrete |
| url | http://dx.doi.org/10.1155/2022/9182729 |
| work_keys_str_mv | AT qili experimentalstudyonfreezethaweffectsoncreepcharacteristicsofrubberconcrete AT feixu experimentalstudyonfreezethaweffectsoncreepcharacteristicsofrubberconcrete AT heminzheng experimentalstudyonfreezethaweffectsoncreepcharacteristicsofrubberconcrete AT junhaoshi experimentalstudyonfreezethaweffectsoncreepcharacteristicsofrubberconcrete AT jianyuzhang experimentalstudyonfreezethaweffectsoncreepcharacteristicsofrubberconcrete |