TR 55: Design guidance for stengthening concrete structures using fibre composite materials: a review

Arya, Chanakya; Clarke, John; Kay, EA; O'Regan, PD

doi:10.1016/s0141-0296(02)00027-5

Cited by 51 publications

(43 citation statements)

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“…To be used as a raw material for concrete is also considered as a promising application for the NMFs. Over recent years, an appreciable number of structures around the world have been strengthened using fiber reinforced polymer materials, and the rate at which the technique is being used is increasing rapidly [39]. The addition of the NMFs to concrete can enhance the engineering properties of concrete such as strength, durability, shrinkage and permeability.…”

Section: Physical Recycling Of Non-metallic Fractions From Waste Pcbsmentioning

confidence: 99%

Recycling of non-metallic fractions from waste printed circuit boards: A review

Guo

2009

Journal of Hazardous Materials

342

141

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Section: Physical Recycling Of Non-metallic Fractions From Waste Pcbsmentioning

confidence: 99%

Recycling of non-metallic fractions from waste printed circuit boards: A review

Guo

2009

Journal of Hazardous Materials

342

141

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“…A number of aged RC structures have been evaluated to be below either the serviceable level or structural safety level, and thus the repair and strengthening of RC structures are needed for improving the durability and load carrying capacity (ACI 1982;Arya et al 2002). Generally, the traditional method used is section replacement (Kim et al 2007), mainly including removal and replacement of old concrete with new concrete, shotcrete, ferrocement, increase in area of reinforcement, and attachment of steel plate.…”

Section: Introductionmentioning

confidence: 99%

Flexural and Interface Behaviors of Reinforced Concrete/Ultra-high Toughness Cementitious Composite (RC/UHTCC) Beams

Hou

Hong

et al. 2015

ACT

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This paper presents an experimental investigation on the response of reinforced concrete (RC) beams with the use of ultra-high toughness cementitious composite (UHTCC) in the tension zone. Two parameters, the longitudinal reinforcement ratio and the depth of UHTCC layer, were varied. The failure mechanism, flexural behavior, interface performance, and cracking pattern were compared between RC and RC/UHTCC beams as well as between RC/UHTCC beams with different depths of the UHTCC layer. The experimental results revealed that the yielding load was improved apparently for beams with a reinforcement ratio of 0.67%, and the macro wide cracks in concrete turned into multiple tight cracks in the UHTCC layer depending on the prominent crack dispersion capacity of the UHTCC. However, RC/UHTCC beams with 1.0% and 1.73% reinforcement ratios showed shear-interface debonding failure prior to the yielding of reinforcement, and the failure resulted from the accumulated interface crack extension up to the support and the crush of concrete. Moreover, the theoretical analysis indicates that the interface cracking strength and ultimate interface bonding strength are related with the reinforcement ratio and UHTCC depth. The tensile stress difference of reinforcement in the UHTCC layer plays a controlling role in the interface debonding between concrete and UHTCC. The present study provides significant insights for the engineering application of hot-casting RC/UHTCC composite beam.

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“…Many investigations 2,3 showed that the bonded-type strengthening procedures are effective in enhancing the strength and ductility of existing reinforced concrete columns. However, few drawbacks were also identified 4,5 such as, debonding of external laminates from concrete surface, high cost, and poor long-term behavior of the system owing to different coefficients of thermal expansion of concrete, adhesive, and non-metallic fiber laminates.…”

Section: Introductionmentioning

confidence: 99%

Axial behaviour of reinforced concrete short columns strengthened with wire rope and T-shaped steel plate units

Yang¹,

Ashour²,

Lee³

2009

Magazine of Concrete Research

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This paper presents a relatively simple column strengthening procedure using unbonded wire rope and T-shaped steel plate units. Twelve strengthened columns and an unstrengthened control column were tested to failure under concentric axial load to explore the significance and shortcomings of the proposed strengthening technique. The main variables investigated were the volume ratio of wire ropes as well as geometrical size and configuration of T-shaped steel plates. Axial load capacity and ductility ratio of columns tested were compared with predictions obtained from the equation specified in ACI 318-05 and models developed for conventionally tied columns, respectively. The measured axial load capacities of all strengthened columns were higher than predictions obtained from ACI 318-05, indicating that the ratio of the measured and predicted values increased with the increase of volume ratio of wire ropes and flange width of T-shaped steel plates. In addition, at the same lateral reinforcement index, a much higher ductility ratio was exhibited by strengthened columns having a volume ratio of wire ropes above 0·0039 than tied columns. The ductility ratio of strengthened columns tested increased with the increase of flange width, thickness, and web height of T-shaped steel plates. A mathematical model for the prediction of stress–strain characteristics of confined concrete using the proposed strengthening technique is developed, that was in good agreement with test results.

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TR 55: Design guidance for stengthening concrete structures using fibre composite materials: a review

Cited by 51 publications

References 1 publication

Recycling of non-metallic fractions from waste printed circuit boards: A review

Recycling of non-metallic fractions from waste printed circuit boards: A review

Flexural and Interface Behaviors of Reinforced Concrete/Ultra-high Toughness Cementitious Composite (RC/UHTCC) Beams

Axial behaviour of reinforced concrete short columns strengthened with wire rope and T-shaped steel plate units

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