This paper aims at presenting the effects of short-term sustained load and temperature on time-dependent deformation of carbon fiber-reinforced polymer (CFRP) bonded to concrete and pull-off strength at room temperature after the sustained loading period. The approach involves experimental and numerical analysis. Single-lap shear specimens were used to evaluate temperature and short-term sustai...

Near-surface mounted (NSM) bars have been used for flexural strengthening of reinforced concrete members. The data available on this type of reinforcement technique are limited and typically, the bars or strips are embedded using an epoxy. Long term durability, abrasion resistance, and compatibility of the repair are important issues with this type of repair. One untested option for embedding t...

For brittle fracture behaviour of carbon fibre reinforced plastics (CFRP) under compression, several approaches exist, which describe different mechanisms during failure, especially at stress intensifications. The failure process is not only initiated by the buckling fibres, but a shear driven fibre compressive failure beneficiaries or initiates the formation of fibres into a kink-band. Startin...

To study the strengthening effect of carbon fiber composite materials (CFRP) on recycled concrete columns subjected to different levels seismic damage, four column specimens were designed for pseudo-static tests. The categorized as non-destructive without (prototype), strengthening, medium damage and severe based replacement rate aggregates level damage. characteristics deformation performance ...

Carbon fiber-reinforced polymer (CFRP) has been used widely in the strengthening of steel structures. Steel/CFRP systems being subjected to elevated temperatures is realistic summer climate events many countries, which leads degradation bond performance between CFRP and steel. Therefore, it critical study behavior CFRP/steel system under temperature. This paper investigates mechanical adhesivel...

in reinforced concrete design, there are situations where transfer of shear across a specific plane needs to be considered. examples of such situation include corbels, bearing shoes, ledger beam bearing, and a host of connection between precast concrete elements. in this study, the shear transfer behavior of reinforced concrete is investigated experimentally by conducting test on 6 precracked p...

In this study, we aim to investigate the effect of galvanic corrosion on mechanical properties aluminum-CFRP adhesive joints. Aluminum-CFRP, aluminum-aluminum, and CFRP-CFRP joint specimens were prepared. Subsequently, subjected accelerated aging treatment in a salt spray environment, tensile shear strength, transition failure surface deposition state components products with time quantitativel...

Debonding problems of externally bonded fiber reinforced polymer (FRP) sheets in flexurally FRP-strengthened reinforced concrete (RC) beams have been a concern and a research challenge since their application of this strengthening technique. Intermediate crack induced debonding is the most common failure mode which is that the debonding initiates at the critical flexural-shear or flexural crack...

We have developed an optical frequency domain reflectometry (OFDR) system which is capable of conducting distributed strain measurements with a sampling rate of 150 Hz, a spatial resolution of less than 1 mm and a sensing range of 20 m. In this study, we applied this technique to monitor dynamic strain distributions along a 5.5 m helicopter blade structure with carbon fiber reinforced plastics ...