| abstract |
(57) [Summary] [Purpose] To provide a simple elasticizing method that allows on-site construction of existing PC sleepers. [Structure] After cleaning the bottom of an existing PC sleeper made of concrete, a primer treatment is applied, and then a levee is formed around the bottom with a mold-releasing frame material so that the bottom becomes the bottom of the pond. , The bottom is held horizontally and the thickness after curing the undiluted urethane elastomer molding solution is 5 to 30 m. A sleeper elasticizing method characterized by injecting so as to be m and curing. |