Energy Evolution Behavior and Mesodamage Mechanism of Crumb Rubber Concrete
The energy evolution behaviour and mesodamage mechanism of CRC (crumb rubber concrete) were investigated by laboratory experiments and numerical simulations. The mesoscopic physical and mechanical parameters of CRC (crumb rubber concrete) materials were analyzed and determined by the discrete elemen...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/9843416 |
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| author | Shengtong Di Chao Jia Weiguo Qiao Kang Li Kai Tong |
| author_facet | Shengtong Di Chao Jia Weiguo Qiao Kang Li Kai Tong |
| author_sort | Shengtong Di |
| collection | DOAJ |
| description | The energy evolution behaviour and mesodamage mechanism of CRC (crumb rubber concrete) were investigated by laboratory experiments and numerical simulations. The mesoscopic physical and mechanical parameters of CRC (crumb rubber concrete) materials were analyzed and determined by the discrete element method and trial-and-error method, and the mechanism and evolution of microcracks propagation during CRC failure were studied based on the parallel-bond model. The relationship among dissipation energy, damage threshold, and rubber content during CRC damage was studied by adopting the method of microscopic energy tracking. The energy release ratio was proposed to analyze the degree of “brittleness” of CRC after reaching its peak strength. The essential mechanism of different failure characteristics of CRC and NC (normal concrete) was analyzed and discussed by referring to their correlation between the microenergy evolution rule and the constitutive curve. The results show that (1) the calibrated mesoscopic physical and mechanical parameters can better reflect the mechanical characteristics of CRC materials, (2) there is a strong correlation between the mesoscopic damage threshold of CRC with different rubber contents and the proportion of dissipation energy at the peak strength, and the damage threshold of the CRC with 25% rubber mass is the largest, (3) the relationship between elastic strain energy release ratio of CRC and rubber particle contents can be fitted by the negative exponential function, and (4) the essential reasons for the different destruction characteristics of CRC and NC is that the addition of rubber particles makes more external input energy to be converted into dissipative energy required for microcracks propagation and sliding friction between particles and released step by step. |
| format | Article |
| id | doaj-art-d5c88ef966ae4d45a3f9e9ba1e8f3ad4 |
| institution | OA Journals |
| issn | 1687-8442 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-d5c88ef966ae4d45a3f9e9ba1e8f3ad42025-08-20T02:19:38ZengWileyAdvances in Materials Science and Engineering1687-84422018-01-01201810.1155/2018/98434169843416Energy Evolution Behavior and Mesodamage Mechanism of Crumb Rubber ConcreteShengtong Di0Chao Jia1Weiguo Qiao2Kang Li3Kai Tong4School of Civil EngineeringInstitute of Marine Science and TechnologyKey Laboratory of Disaster Prevention and Reduction of Civil Engineering in Shandong ProvinceSchool of Civil EngineeringSchool of Civil EngineeringThe energy evolution behaviour and mesodamage mechanism of CRC (crumb rubber concrete) were investigated by laboratory experiments and numerical simulations. The mesoscopic physical and mechanical parameters of CRC (crumb rubber concrete) materials were analyzed and determined by the discrete element method and trial-and-error method, and the mechanism and evolution of microcracks propagation during CRC failure were studied based on the parallel-bond model. The relationship among dissipation energy, damage threshold, and rubber content during CRC damage was studied by adopting the method of microscopic energy tracking. The energy release ratio was proposed to analyze the degree of “brittleness” of CRC after reaching its peak strength. The essential mechanism of different failure characteristics of CRC and NC (normal concrete) was analyzed and discussed by referring to their correlation between the microenergy evolution rule and the constitutive curve. The results show that (1) the calibrated mesoscopic physical and mechanical parameters can better reflect the mechanical characteristics of CRC materials, (2) there is a strong correlation between the mesoscopic damage threshold of CRC with different rubber contents and the proportion of dissipation energy at the peak strength, and the damage threshold of the CRC with 25% rubber mass is the largest, (3) the relationship between elastic strain energy release ratio of CRC and rubber particle contents can be fitted by the negative exponential function, and (4) the essential reasons for the different destruction characteristics of CRC and NC is that the addition of rubber particles makes more external input energy to be converted into dissipative energy required for microcracks propagation and sliding friction between particles and released step by step.http://dx.doi.org/10.1155/2018/9843416 |
| spellingShingle | Shengtong Di Chao Jia Weiguo Qiao Kang Li Kai Tong Energy Evolution Behavior and Mesodamage Mechanism of Crumb Rubber Concrete Advances in Materials Science and Engineering |
| title | Energy Evolution Behavior and Mesodamage Mechanism of Crumb Rubber Concrete |
| title_full | Energy Evolution Behavior and Mesodamage Mechanism of Crumb Rubber Concrete |
| title_fullStr | Energy Evolution Behavior and Mesodamage Mechanism of Crumb Rubber Concrete |
| title_full_unstemmed | Energy Evolution Behavior and Mesodamage Mechanism of Crumb Rubber Concrete |
| title_short | Energy Evolution Behavior and Mesodamage Mechanism of Crumb Rubber Concrete |
| title_sort | energy evolution behavior and mesodamage mechanism of crumb rubber concrete |
| url | http://dx.doi.org/10.1155/2018/9843416 |
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