Repair, Strengthening and Conservation of Reinforced Concrete Buildings over the Limit State due to Deterioration in Gunkanjima Island
By T. Noguchi
Concrete Journal, Vol.56, No.3, Mar. 2018
- Synopsis
- "Technical Committee on Repair, Rehabilitation and Retrofitting of Concrete Structures over the Limit State due to Deterioration" commissioned by Nagasaki City was established in FY2015-FY2016. Following the designation of Gunkanjima as a historic site of Japan, its coal mining facilities were registered as a World Cultural Heritage component in 2015. For this reason, the Committee carried out various investigations from technological and cultural asset viewpoints concerning conservation measures for remarkably deteriorated reinforced concrete buildings that remain as ruins. In particular, specific repair methods, strengthening methods, and repair work/strengthening work execution methods were investigated with regard to buildings No.3, No.16, and No.65 (south wing). This paper gives an overview of the activities of the Committee.
- Keywords:
- cultural heritage, authenticity, reversibility, chloride attack, rebar corrosion, execution scheme
