Abstract
Recent increases of the traffic volume and load provide a severe condition to the bridge slab, which results in replacement of the deteriorated bridge slab to a stronger slab.
The present study aims to obtain the behavioral information of the precast slab system subjected to bending, and focuses to the statical strength and crack width of the joint part of precast slabs. Test results indicated that some of the reinforcing joint systems, especially a vertical loop system, have both sufficient strength and less crack width, and that prestressing joint systems have also more strength than the strength evaluated from the JSCE Concrete Standard Specification.
