000004896 001__ 4896
000004896 005__ 20141119144602.0
000004896 04107 $$aeng
000004896 046__ $$k2002-06-02
000004896 100__ $$aWu, Hwai-Chung
000004896 24500 $$aRETROFIT EFFICIENCY USING FRP SHEETS: MECHANICS VIEWPOINT

000004896 24630 $$n15.$$pProceedings of the 15th ASCE Engineering Mechanics Division Conference
000004896 260__ $$bColumbia University in the City of New York
000004896 506__ $$arestricted
000004896 520__ $$2eng$$aFiber Reinforced Plastics (FRP) are currently gaining a rapid momentum in finding their way into civil engineering structural applications. The greatest potential of FRPs in the near future will be in the areas of repair, strengthening, and rehabilitation of existing structures, such as externally bonded composite fabrics or jackets on beams, columns, and bridge decks. Significant improvements in compressive, shear, and flexural behavior of bonded concrete elements are obtained. In an effective retrofit with external FRP sheets, a layer of dry fiber sheet (usually unidirectional tape) is placed on the top of a coat of polymer resin that will harden to bond the fiber sheet to the concrete structure. In this paper, a fracture mechanics based micromechanical model is presented to describe the retrofit effect of using FRP sheets on concrete structures. The interaction between concrete crack and applied FRP sheets is treated by creating opposing bridging stress acting across the concrete crack flanks as a result of the FRP stretching. Such interactions depending on loading conditions will be discussed in terms of retrofit efficiency in this paper.

000004896 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004896 653__ $$aFRP, retrofit, compression, flexure, shear, concrete

000004896 7112_ $$a15th ASCE Engineering Mechanics Division Conference$$cNew York (US)$$d2002-06-02 / 2002-06-05$$gEM2002
000004896 720__ $$aWu, Hwai-Chung
000004896 8560_ $$ffischerc@itam.cas.cz
000004896 8564_ $$s89618$$uhttps://invenio.itam.cas.cz/record/4896/files/505.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004896 962__ $$r4594
000004896 980__ $$aPAPER