Assessment of Outdoor Exposure Effects on the Long-term Durability of Epoxy Resin Adhesives Used for Steel-plate Bonding
Source abstract
Abstract
The steel-plate bonding method used to reinforce concrete slabs in bridges has a long record of adoption, and has played an important role for many years. Favorable conditions have been observed with this method in periodic inspections; however, as part of durability tests, decreases in strength of the epoxy resin adhesive (which is one of its component materials) have been observed following over time outdoor exposure under standard environmental conditions. Investigations into the causes of decreased strength of epoxy resin adhesive are useful for increasing long-term durability in future infrastructure maintenance. The estimation of environmental factors that incorporate exposure conditions and the results of conducting accelerated tests revealed that the performance of epoxy resin adhesive was influenced by humidity. Additionally, decreases in strength accompanying reaction progress of epoxy resin were also observed. These results indicate that the degradation due to water absorption and the generation of internal stress due to the progress of the curing reaction of the epoxy resin are the causes of the decrease in the strength of the epoxy resin.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Concrete Corrosion and Durability · Infrastructure Maintenance and Monitoring · Advanced machining processes and optimization
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Civil and Environmental Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan.
Repair Engineering Laboratory, Sho-Bond Corporation, 1-17 Sakura, Tsukuba, Ibaraki, 305-0003, Japan.
Engineering Promotion Office, Engineering Department, Hanshin Expressway Company, Ltd., Nakanoshima Festival Tower West, 3-2-4 Nakanoshima, Kita-ku, Osaka 530-0005, Japan.
References (14)
Show source-provided references
1. 2) Ando, Y., Urata, M., Yamamoto, K. and Matsuda, H., (2008). “Study of the peeling edge of steel plate bonded width.” Proceedings of the Japan Concrete Institute, 30(3), 1603-1608. (in Japanese)
2. 3) ASTM, (2013). “ASTM E837-13a: Standard test method for determining residual stresses by the hole-drilling strain-gage method.” West Conshohocken, PA, USA: ASTM International.
3. 4) Fujita, R., Sakamoto, N. and Suzuki, H., (2012). “Quality changes in epoxy resin used for RC deck repair work over time.” In: Proceedings of the 44th Hanshin Expressway Engineering Research Conference, Osaka, Japan May 2012. Osaka: Hanshin Expressway Company Limited, 333-336. (in Japanese)
4. 5) Himuro, K., Sadai, M., Matsui, K., Sumita, H. and Yamamoto, K., (2012). “Clarification of deterioration mechanism of structural adhesives by water absorption.” Transactions of the Society of Automotive Engineers of Japan, (43). 2, 543-548. (in Japanese)
5. 6) Honma, S., (2004). “Applied strength and durability of plastic.” Plastics, 55(4), 143-152. (in Japanese)
6. 7) Kishima, Y. and Nishiyama, I., (2005). “Characteristic evaluation for interface of different materials by SAICAS system.” Journal of the Adhesion Society of Japan, (41)6, 234-240. (in Japanese)10.11618/adhesion.41.234 ↗
7. 10) Sano, M. and Miura, T., (1996). “A study on a design method for strengthening concrete members by steel-plate-bonding.” Journal of Materials, Concrete Structures and Pavements, JSCE, 550/V-33, 117-129. (in Japanese)10.2208/jscej.1996.550_117 ↗
8. 11) Shimbo, M., (1987). “Epoxy resin handbook.” Tokyo: Nikkan Kogyo Shimbun. (in Japanese)
9. 14) Yamazaki, D., Katayama, M. and Maruyama, K., (2015). “Follow-up test report of the ‘Showa Bridge’ 50 years after the Niigata Earthquake and restoration.” Proceedings of the 70th Annual Meeting of JSCE, 70/V-575, 149-1150. (in Japanese)
10. 1) Allen, N, S. and Edge, M., (1992). “Fundamentals of polymer degradation and stabilization.” Essex: Elsevier Science Publishers Ltd.
11. 8) Ladner, M. and Weder, Ch., (1981). “Concrete Structures with Bonded External Reinforcement.” EMPA-Report 206, Dübendorf: EMPA.
12. 9) Nagai, N., Imai, T., Terada, K., Seki, H., Okumura, H., Fujino, H., Yamamoto, T., Nishiyama, I. and Hatta, A., (2002). “Depth profile analysis of ion-implanted photoresist by infrared spectroscopy.” SURFACE and INTERFACE ANALYSIS, 33(7), 545-551.10.1002/sia.1415 ↗
13. 12) Sousa, M. J., Correia, R. J. and Cabral-Fonseca, S., (2018) “Durability of an epoxy adhesive used in civil structural applications.” Construction and Building Materials, 161, 618-633.10.1016/j.conbuildmat.2017.11.168 ↗
14. 13) Takeshi, T. and Sawaide, M., (1993). “Physical properties of epoxy resin after lapse of twenty years.” In: S. Nagataki, T. Nireki and F. Tomosawa, Eds. Durability of Building Materials and Components 6, Omiya 26-29 October 1993. London: E & FN Spon, 1211-1220.