FraMCoS 3 1998 Gifu, Japan

Fracture and Fatigue Strength of Slabs Repaired with D-Rap Method

Reinforced concrete slabs on the steel girders of old highway bridge get damage occasionally. Various repairing methods of damaged deck slab have been developed and adopted in site. A new repairing method of the damaged RC slabs named D-RAP method…

First page of: Fracture and Fatigue Strength of Slabs Repaired with D-Rap Method
Year 1998
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Abstract

Reinforced concrete slabs on the steel girders of old highway bridge get damage occasionally. Various repairing methods of damaged deck slab have been developed and adopted in site. A new repairing method of the damaged RC slabs named D-RAP method was developed where double layered pre-fabricated panels were glued on the top surface of concrete by epoxy resin mortar. Though it is not clear how they can be fractured under static and dynamic load. However, various tests were made on the mechanical behavior of beams and slabs reinforced by this method. It were also made by fatigue tests of full scale model slabs on two alternative points. It was found that D-RAP method increased load-carrying capacity and fatigue strength as high as newly constructed slabs. These test results showed that D-RAP method is an effective reinforcing method of deteriorated slabs.