Flexural Behavior of Slab Repaired and Rehabilitated with Strand and Polymer Mortar

강연선과 폴리머 모르터에 의해 보수ㆍ보강된 슬래브의 휨거동 특성

With deterioration of the nation's infrastructure comes the growing, need for effective means of rehabilitating structures. Possibly one for the most challenging tasks is to upgrade the overall capacity of concrete structure. This study focused on the flexural behavior of reinforced concrete slabs strengthened by PS strand and polymer mortar in the tension zone. The properties of slabs are 70×12㎝ rectangular and over a 220㎝ span. Test parameters in this experimental study were placing thickness, chipping, the number of strand, the kind of mortar. Attention is concentrated upon overall bending capacity, deflection, ductility index, failure mode and crack development of repaired and rehabilitated slabs.