Strengthening and Repair of Reinforced Concrete Beams Using External Steel Plates

Aykaç, Sabahattin; Kalkan, İlker; Aykaç, Bengi; Karahan, Servet; Kayar, Sinan

doi:10.1061/(asce)st.1943-541x.0000714

Cited by 79 publications

(48 citation statements)

References 12 publications

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“…This may due to the steel plates were not thick enough to prevent out of plane wrapping at high loads result in plate delamination. This is also highlighted by [8] that the minimum thickness of steel plates is 1.5mm. Also, the steel plate bearing capacity at the bolt's hole was not high enough to resist the transverse force in the bolts.…”

Section: Beam Capacitiesmentioning

confidence: 85%

“…Anchored bolts placed at shear span shorten the steel plates' buckling length and contribute significant effects on ultimate shear strength [2,4]. Aykac et al [8] studied that using bolts to embed thin steel plates to the soffit of RC beams did not contribute ductility and load capacity. Su et al [9] and Li et al [10] studied the shear transfer in bolted side plated RC beams and proposed a new design approach to calculate shear transfer profile and the critical bolts shear force in bolted side-plated RC beams.…”

Section: Introductionmentioning

confidence: 99%

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Applications of bolted steel plates to shear strengthening of RC beams

2019

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Many reinforced concrete beams have been found deficiencies in shear due to lack of shear reinforcement. Few researches have been done to investigate shear strengthening of low concrete strength of RC beams using bolted steel plates. This paper presents experimental results on the behaviour of RC beams strengthening using full steel plates along the shear span fixed with bolts. Nine RC beams having dimension of 150x200x1500mm were tested to failure on simply supports with four point loadings setup. The beams were reinforced with tension rebars area of 289.8 mm 2 (2D10+1D13) and transvers reinforcement of Ø6-125. Two dial gauges were installed at the beam middle span to measure beam deflection during the test. The results show that the applications of steel plate and bolts as external reinforcement increase beam shear capacity, stiffness and delay the occurrence of first diagonal cracks. Beams stregnthened with U-shape plates gave better performances than the beams with two pieces of L-shape plates due to better achorages.

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Section: Beam Capacitiesmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Applications of bolted steel plates to shear strengthening of RC beams

2019

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“…El refuerzo por adición externa de chapas metálicas coladas es caracterizado por la unión de la superficie de concreto con chapas de acero a través de una resina con alta capacidad de adhesión y resistencia mecánica. Es una opción para el refuerzo de elementos de concreto, de rápida y simple ejecución, recomendada principalmente cuando es necesario reforzar la estructura en un tiempo corto, o cuando no es posible hacer grandes alteraciones en la geometría de la pieza (Campagnolo et al, 1994;Santos, 2008;Aykac et al, 2013). Al final del proceso se tiene un elemento estructural compuesto por concreto-resina-acero, lo que provee a la estructura una resistencia mayos a los esfuerzos solicitantes.…”

Section: Introductionunclassified

Análisis experimental de distintas configuraciones de chapa metálica en el refuerzo a flexión de vigas de concreto armado

Deghenhard

Teixeira

Vargas

et al. 2016

Revista de la Asociación Latinoamericana de Control de Calidad,

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Análisis experimental de distintas configuraciones de chapa metálica en el refuerzo a flexión de vigas de concreto armadoRESUMENEl acero de refuerzo estructural externo a través de chapas de acero pegadas con adhesivo epóxico es una opción para incrementar la capacidad de carga de elementos de concreto reforzado. En este estudio se evaluaron vigas de concreto reforzadas con chapas de acero SAE 1020 de diferentes espesores (0.75, 1.50 y 2.25 mm), longitudes (80 and 150 cm) y configuración (en forma de U o plana) con el propósito de revisar y comparar las mejores prácticas con chapas pegadas al refuerzo estructural. Se elaboraron 21 vigas construídas con una sección trasversal de 12 x 20 cm y una longitud de 200 cm, con concreto C25 y armadura de flexión con 2 Ø10 mm. Las vigas fueron sometidas a ensayos de flexión en 4 puntos, lo que permitió analizar las cargas últimas y desplazamientos verticales. Como resultado, se presenta una comparación relativa al desempeño de las vigas.Palabras clave: refuerzo estructural; placas de acero coladas, vigas de concreto reforzado. Experimental analysis of various configurations of metal sheets in the reinforcement of flexion of reinforced concrete beamsABSTRACT The external structural reinforcing steel in the way of steel sheets attached with epoxy adhesive is an option to increase the load capacity of reinforced concrete elements. This study evaluated concrete beams reinforced with steel sheets SAE 1020 of different thicknesses (0.75, 1.50, and 2.25 mm), longitudes (80 and 150 cm), and configurations (U-shape or flat) with the purpose of reviewing and comparing the best practices with sheets adhered to the structural reinforcement. Twenty-one beams were built with a cross-section of 12 x 20 cm and a longitude of 200 cm, with C25 concrete, and flexion frame with 2 Ø10 mm. The beams where subject to a four-point flexural test, which allowed analyzing the optimal loads and vertical displacements. Thus, a comparison relative to the performance of the beams is presented.Keywords: structural reinforcement; cast steel plates; reinforced concrete beams. Análise experimental de distintas configurações de chapa metálica no reforço à flexão em vigas de concreto armadoRESUMO O reforço estrutural externo com chapa metálica colada com adesivo epóxi é uma opção que possibilita aumentar a capacidade de carga em elementos de concreto armado. Este trabalho avaliou experimentalmente vigas de concreto armado com reforço de chapas de aço SAE 1020 de diferentes espessuras (0,75; 1,50 e 2,25 mm), comprimentos (80 e 150 cm) e configurações (perfil U ou simplesmente plana) com intuito de revisar e comparar as melhores práticas de reforço estrutural com chapa colada. Foram fabricadas 21 vigas com seções transversais de 12x20 cm e comprimento de 200 cm, utilizando concreto C25 e armadura de flexão com 2 Ø10 mm. As vigas foram submetidas a ensaios de flexão em 4 pontos, o que permitiu analisar as cargas últimas e deslocamentos verticais. Como resultado, apresenta-se um comparativo de desempenho das vigas.Palavras-chave: Reforço estrutural; chapa de aço colada; vigas de concreto armado.

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“…Traditional techniques using steel plates have been used in the past to improve flexural and shear capacities of damaged concrete beams [5][6][7]. However, high installation cost and corrosion of the plates focused the attention on using fiberreinforced polymers, suitable in terms of low costs and fast in execution, as new repair materials.…”

mentioning

confidence: 99%

Repair of Pre-Cracked RC Beams Using Several Cementitious Materials

Shihada

2013

JSRR

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Strengthening and Repair of Reinforced Concrete Beams Using External Steel Plates

Cited by 79 publications

References 12 publications

Applications of bolted steel plates to shear strengthening of RC beams

Applications of bolted steel plates to shear strengthening of RC beams

Análisis experimental de distintas configuraciones de chapa metálica en el refuerzo a flexión de vigas de concreto armado

Repair of Pre-Cracked RC Beams Using Several Cementitious Materials

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