RefDoc
Haut

Faire une nouvelle recherche
Make a new search
Lancer la recherche


Titre du document / Document title

Groove and embedding techniques using CFRP trapezoidal bars for strengthening of concrete structures

Auteur(s) / Author(s)

HA Gee-Joo (1) ; KIM Yun-Yong (2) ; CHO Chang-Geun (3) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Department ofArchitectural Engineering, Kyungil University, Kyungbuk, COREE, REPUBLIQUE DE
(2) Department of Civil Engineering, Chungnam National University, Daejeon, COREE, REPUBLIQUE DE
(3) E2-118, School of Architecture and Civil Engineering, KyungPook National University, Sangkyuk-Dong 1370, Puk-Ku, Daegu, 702-170, COREE, REPUBLIQUE DE

Résumé / Abstract

An experimental program to apply a new retrofit technology using high performance carbon fiber reinforced polymer (CFRP) bars with a trapezoidal cross section to reinforce concrete beams has been investigated. The proposed method has two important advantages in the retrofit of concrete beams: the failure mode of the beam is controlled by flexural failures before reaching local failures and the retrofitting process in the construction field is simple and easy to apply in aged reinforced concrete beams or beam-column members. The new methodology has been proposed based on a system where geometrically modulated CFRP trapezoidal bars are embedded into grooved concrete with additional assistance from externally applied U-type metal fittings. The proposed retrofit method is validated by comparing it with the experimental results of conventionally strengthened beams and showing that the proposed method gives good improvement in ductility and load-carrying capacities of concrete beams. When compared with conventional retrofit methods using steel plates or FRP sheets, the proposed method is effective in preventing local failures before reaching the flexural failure of retrofitted beams, due to the superior composite action between the concrete and embedded CFRP trapezoidal bars.

Revue / Journal Title

Engineering structures    ISSN  0141-0296   CODEN ENSTDF 

Source / Source

2008, vol. 30, no4, pp. 1067-1078 [12 page(s) (article)] (26 ref.)

Langue / Language

Anglais

Editeur / Publisher

Elsevier, Kidlington, ROYAUME-UNI  (1978) (Revue)

Mots-clés anglais / English Keywords

Crack

;

Properties of materials

;

System description

;

Construction technology

;

Ductility

;

Loadbearing capacity

;

Rehabilitation

;

Trapezoidal shape

;

Reinforcing bar

;

Experimental study

;

Embedment

;

Carbon fiber

;

Fibre reinforced plastics

;

Strengthening

;

Concrete construction

;

Mots-clés français / French Keywords

Fissure

;

Propriété matériau

;

Description système

;

Technologie construction

;

Ductilité

;

Capacité portante

;

Réhabilitation

;

Forme trapézoïdale

;

Rond béton

;

Etude expérimentale

;

Encastrement

;

Fibre carbone

;

Plastique renforcé fibre

;

Renforcement mécanique

;

Construction béton

;

Mots-clés espagnols / Spanish Keywords

Fisura

;

Propiedad material

;

Descripción sistema

;

Tecnología construcción

;

Ductilidad

;

Capacidad soporte

;

Rehabilitación

;

Forma trapezoidal

;

Círculo hormigón

;

Estudio experimental

;

Encaje

;

Fibra carbón

;

Plástico reforzado fibra

;

Refuerzo mecánico

;

Construcción de hormigon

;

Mots-clés d'auteur / Author Keywords

Carbon fiber reinforced polymer (CFRP) trapezoidal bar

;

Metal fittings

;

Retrofit of concrete structures

;

Load-carrying capacity

;

Ductility

;

Localisation / Location

INIST-CNRS, Cote INIST : 18784, 35400018328410.0170

Nº notice refdoc (ud4) : 20196677



Faire une nouvelle recherche
Make a new search
Lancer la recherche
Bas