Multi-Scale Decay Mechanism of Emulsified Asphalt Cold Recycled Mixture Under Freeze-Thaw
The road performance decay law of EACRM under freeze-thaw cycles was studied using laboratory tests on the macroscopic scale in order to comprehensively analyze the serious performance damage mechanism of emulsified asphalt cold recycled mixture (EACRM) in cold regions during the service period. The...
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| Format: | Article |
| Language: | English |
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Riga Technical University Press
2023-09-01
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| Series: | The Baltic Journal of Road and Bridge Engineering |
| Subjects: | |
| Online Access: | https://bjrbe-journals.rtu.lv/article/view/7884 |
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| _version_ | 1841564075051450368 |
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| author | Yanhai Yang Liang Yue Ye Yang Guanliang Chen |
| author_facet | Yanhai Yang Liang Yue Ye Yang Guanliang Chen |
| author_sort | Yanhai Yang |
| collection | DOAJ |
| description | The road performance decay law of EACRM under freeze-thaw cycles was studied using laboratory tests on the macroscopic scale in order to comprehensively analyze the serious performance damage mechanism of emulsified asphalt cold recycled mixture (EACRM) in cold regions during the service period. The surface cracking behavior, internal void evolution characteristics, and asphalt mortar morphology damage of EACRM under freeze-thaw cycles were studied by means of digital speckle, industrial CT, and scanning electron microscope (SEM) on the mesoscopic and microscopic scale. The results show that along with the increase in the number of freeze-thaw cycles, the road performance of EACRM decreases significantly. The surface of EACRM obviously cracks, and the width and number of main cracks increase significantly. The fatigue times of the maximum horizontal strain in the whole field gradually decrease. Air voids and the average volume of meso-void visibly increase. The microcracks of cement-emulsified asphalt mortar constantly emerge at the interface. The serious damage of the “three-dimensional network structure” is the fundamental reason for the performance decay of EACRM in cold regions. The performance damage of EACRM in cold regions is aggravated by water seeping into voids from cracks. Eventually, EACRM shows serious freeze-thaw inflicted damage. |
| format | Article |
| id | doaj-art-0cc4c83117a2497794ee5d5db47a9b06 |
| institution | Kabale University |
| issn | 1822-427X 1822-4288 |
| language | English |
| publishDate | 2023-09-01 |
| publisher | Riga Technical University Press |
| record_format | Article |
| series | The Baltic Journal of Road and Bridge Engineering |
| spelling | doaj-art-0cc4c83117a2497794ee5d5db47a9b062025-01-02T23:17:19ZengRiga Technical University PressThe Baltic Journal of Road and Bridge Engineering1822-427X1822-42882023-09-01183506910.7250/bjrbe.2023-18.6083368Multi-Scale Decay Mechanism of Emulsified Asphalt Cold Recycled Mixture Under Freeze-ThawYanhai Yang0Liang Yue1Ye Yang2Guanliang Chen3School of Transportation and Geomatics Engineering, Shenyang Jianzhu University, Shenyang, ChinaSchool of Transportation and Geomatics Engineering, Shenyang Jianzhu University, Shenyang, ChinaSchool of Transportation and Geomatics Engineering, Shenyang Jianzhu University, Shenyang, China College of Transportation Engineering, Dalian Maritime University, Dalian, ChinaSchool of Transportation and Geomatics Engineering, Shenyang Jianzhu University, Shenyang, ChinaThe road performance decay law of EACRM under freeze-thaw cycles was studied using laboratory tests on the macroscopic scale in order to comprehensively analyze the serious performance damage mechanism of emulsified asphalt cold recycled mixture (EACRM) in cold regions during the service period. The surface cracking behavior, internal void evolution characteristics, and asphalt mortar morphology damage of EACRM under freeze-thaw cycles were studied by means of digital speckle, industrial CT, and scanning electron microscope (SEM) on the mesoscopic and microscopic scale. The results show that along with the increase in the number of freeze-thaw cycles, the road performance of EACRM decreases significantly. The surface of EACRM obviously cracks, and the width and number of main cracks increase significantly. The fatigue times of the maximum horizontal strain in the whole field gradually decrease. Air voids and the average volume of meso-void visibly increase. The microcracks of cement-emulsified asphalt mortar constantly emerge at the interface. The serious damage of the “three-dimensional network structure” is the fundamental reason for the performance decay of EACRM in cold regions. The performance damage of EACRM in cold regions is aggravated by water seeping into voids from cracks. Eventually, EACRM shows serious freeze-thaw inflicted damage.https://bjrbe-journals.rtu.lv/article/view/7884damage evolution behavioremulsified asphalt cold recycled mixture (eacrm)freeze-thaw cyclesmulti-scale researchroad engineeringroad performance decay |
| spellingShingle | Yanhai Yang Liang Yue Ye Yang Guanliang Chen Multi-Scale Decay Mechanism of Emulsified Asphalt Cold Recycled Mixture Under Freeze-Thaw The Baltic Journal of Road and Bridge Engineering damage evolution behavior emulsified asphalt cold recycled mixture (eacrm) freeze-thaw cycles multi-scale research road engineering road performance decay |
| title | Multi-Scale Decay Mechanism of Emulsified Asphalt Cold Recycled Mixture Under Freeze-Thaw |
| title_full | Multi-Scale Decay Mechanism of Emulsified Asphalt Cold Recycled Mixture Under Freeze-Thaw |
| title_fullStr | Multi-Scale Decay Mechanism of Emulsified Asphalt Cold Recycled Mixture Under Freeze-Thaw |
| title_full_unstemmed | Multi-Scale Decay Mechanism of Emulsified Asphalt Cold Recycled Mixture Under Freeze-Thaw |
| title_short | Multi-Scale Decay Mechanism of Emulsified Asphalt Cold Recycled Mixture Under Freeze-Thaw |
| title_sort | multi scale decay mechanism of emulsified asphalt cold recycled mixture under freeze thaw |
| topic | damage evolution behavior emulsified asphalt cold recycled mixture (eacrm) freeze-thaw cycles multi-scale research road engineering road performance decay |
| url | https://bjrbe-journals.rtu.lv/article/view/7884 |
| work_keys_str_mv | AT yanhaiyang multiscaledecaymechanismofemulsifiedasphaltcoldrecycledmixtureunderfreezethaw AT liangyue multiscaledecaymechanismofemulsifiedasphaltcoldrecycledmixtureunderfreezethaw AT yeyang multiscaledecaymechanismofemulsifiedasphaltcoldrecycledmixtureunderfreezethaw AT guanliangchen multiscaledecaymechanismofemulsifiedasphaltcoldrecycledmixtureunderfreezethaw |