Partial repair method for concrete slabs
1. Overview
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This method is used in the reconstruction of RC floor slabs for PC composite girders, which are becoming increasingly apparent in recent years, underneath bridges.
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Compared with conventional methods, this method shortens the period during which traffic restrictions are in place.
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This method is suited to replacing just localized deterioration rather than total replacement.
2. NETIS Registration / Patent
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Patent No. 5958907 Partial repair method for existing concrete floor slabs (joint patent of West Nippon Expressway Company Limited and West Nippon Expressway Engineering Chugoku Co., Ltd.)
3. Key Features
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Ensures work can be performed safely by temporarily restoring the removed floor slab with a temporary covering panel.
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Fully capitalizes on ability to carry out work from underneath the bridge, thereby minimizing the impact on traffic.
4. Catalogs & Technical Reports
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[Paper] Masaki SUGIE, Toshinori YASUZATO, Masato FUKUDA, Suguru TOKUMITSU: Construction Test of Partial Rebuild of Concrete Slab from the Bottom Side; Proceedings of the Concrete Structure Scenarios, JSMS, Vol. 19, pp. 527-530, 2019.10
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[Paper] Fumika NAKAMURA, Masato FUKUDA, Toshinori YASUZATO, Suguru TOKUMITSU: Experimental Study of Temporary Covering Plate Joined by Prestress for Repair Road Bridge Deck Slab; Proceedings of the 27th JPCI Symposium on Development in Prestressed Concrete, pp73-78, 2018.11
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[Paper] Suguru TOKUMITSU, Takayuki MATSUI, Kazuaki YOKOYAMA, Masanori SUZUKI: Study of Concrete Floor Slab Partial Replacement Methods Utilizing Covering Panels, Japan Society of Civil Engineers 69th Annual Meeting, pp161-162, 2014.9