Effects of Water Immersion on the Adhesion between Adhesive Layer and Concrete Block
The effectiveness of load transfer in the CFRP-adhesive-concrete system highly relies on the integrity of the interfacial bond between adhesive layer and concrete. In the present paper, the effects of water immersion on the mode I fracture energy of the adhesion between CFRP adhesive and concrete we...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/7069757 |
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| _version_ | 1832555881612443648 |
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| author | Jiajun Shi Yunfeng Pan Hedong Li Jun Fu |
| author_facet | Jiajun Shi Yunfeng Pan Hedong Li Jun Fu |
| author_sort | Jiajun Shi |
| collection | DOAJ |
| description | The effectiveness of load transfer in the CFRP-adhesive-concrete system highly relies on the integrity of the interfacial bond between adhesive layer and concrete. In the present paper, the effects of water immersion on the mode I fracture energy of the adhesion between CFRP adhesive and concrete were investigated experimentally and numerically. Four-point bending test was conducted to measure the mode I fracture energy of the interfacial layer between adhesive and concrete. The moisture content distribution and the hygrothermal stress were determined by using the finite element method (FEM). The mode I fracture energy was found decreasing with increasing immersion time. The difference between the mode I fracture energy at 2 weeks and 4 weeks is rare. The failure mode of the four-point bending test specimen shifts from concrete failure to interfacial debonding. The moisture content at the adhesive/concrete interface reaches equilibrium after 2 weeks of water immersion. The hygrothermal stress between adhesive and concrete is smaller than the tensile strength of concrete. Deterioration of the physical bond leads to the degradation of bonding strength. The reduction of the mode I fracture energy is more severe than that of the mode II fracture energy. |
| format | Article |
| id | doaj-art-c72dae0000604cd28a46f71656a54e1b |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-c72dae0000604cd28a46f71656a54e1b2025-02-03T05:46:57ZengWileyAdvances in Civil Engineering1687-80861687-80942019-01-01201910.1155/2019/70697577069757Effects of Water Immersion on the Adhesion between Adhesive Layer and Concrete BlockJiajun Shi0Yunfeng Pan1Hedong Li2Jun Fu3School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou, ChinaSchool of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou, ChinaSchool of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou, ChinaSchool of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou, ChinaThe effectiveness of load transfer in the CFRP-adhesive-concrete system highly relies on the integrity of the interfacial bond between adhesive layer and concrete. In the present paper, the effects of water immersion on the mode I fracture energy of the adhesion between CFRP adhesive and concrete were investigated experimentally and numerically. Four-point bending test was conducted to measure the mode I fracture energy of the interfacial layer between adhesive and concrete. The moisture content distribution and the hygrothermal stress were determined by using the finite element method (FEM). The mode I fracture energy was found decreasing with increasing immersion time. The difference between the mode I fracture energy at 2 weeks and 4 weeks is rare. The failure mode of the four-point bending test specimen shifts from concrete failure to interfacial debonding. The moisture content at the adhesive/concrete interface reaches equilibrium after 2 weeks of water immersion. The hygrothermal stress between adhesive and concrete is smaller than the tensile strength of concrete. Deterioration of the physical bond leads to the degradation of bonding strength. The reduction of the mode I fracture energy is more severe than that of the mode II fracture energy.http://dx.doi.org/10.1155/2019/7069757 |
| spellingShingle | Jiajun Shi Yunfeng Pan Hedong Li Jun Fu Effects of Water Immersion on the Adhesion between Adhesive Layer and Concrete Block Advances in Civil Engineering |
| title | Effects of Water Immersion on the Adhesion between Adhesive Layer and Concrete Block |
| title_full | Effects of Water Immersion on the Adhesion between Adhesive Layer and Concrete Block |
| title_fullStr | Effects of Water Immersion on the Adhesion between Adhesive Layer and Concrete Block |
| title_full_unstemmed | Effects of Water Immersion on the Adhesion between Adhesive Layer and Concrete Block |
| title_short | Effects of Water Immersion on the Adhesion between Adhesive Layer and Concrete Block |
| title_sort | effects of water immersion on the adhesion between adhesive layer and concrete block |
| url | http://dx.doi.org/10.1155/2019/7069757 |
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