Performance of externally bonded GFRP sheets on concrete in tropical environments. Part I: Structural scale tests

Mukherjee, Abhijit; Arwikar, S. J.

doi:10.1016/j.compstruct.2006.05.013

Cited by 20 publications

(9 citation statements)

References 13 publications

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“…Such composites are also subjected to dramatically varying climatic conditions. It has been observed that the composites can degrade considerably in tropical climate [1,2]. It is important to understand the moisture diffusion through clustered microstructure to realisticallly estimate the life of such composites.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Numerical modelling of moisture diffusion in FRP with clustered microstructures

Jain

Mukherjee

Kwatra

2016

Applied Mathematical Modelling

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Highlights Moisture propagation in fibre reinforced polymers with spatial tortuosity is presented  An algorithm for creation and control of microstructures is developed  Statistical descriptors of geometry have been used to quantify clustering  Correlation between the statistical descriptor and moisture diffusion has been established  The results should serve as a guideline for moisture absorption and durability of FRPs AbstractThis paper presents a numerical study of moisture propagation in fibre reinforced polymer (FRP) materials with spatial tortuosity. An algorithm for creation of microstructures with clustered fibre architecture is presented. Several controls for different characteristics of the clusters are described. Different statistical descriptors of geometry are used to quantify the clustering. A Fickian diffusion process has been modelled. The effect of clustering on moisture diffusion through the FRP is reported. It is observed that microstructures greatly affect the diffusion behaviour of the FRP.Correlation between moisture diffusion and the statistical descriptors has been examined. The statistical measures that depict the global characteristics of the microstructure are found to have a better correlation with time to saturate the representative volume element. The results should help in prediction of macroscopic response and durability of FRPs.

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Section: Accepted Manuscriptmentioning

confidence: 99%

Numerical modelling of moisture diffusion in FRP with clustered microstructures

Jain

Mukherjee

Kwatra

2016

Applied Mathematical Modelling

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“…FRP is increasingly being used in the repair and strengthening of deteriorated and under-strengthened concrete structures. FRP has gained this popularity over conventional materials by its high strength to weight ratio, fatigue resistance, non-corrosiveness and ease of handling and application at site [1,2]. Also, advances in FRP suggest that FRP have enormous future potentials in the construction industry [3].…”

Section: Introductionmentioning

confidence: 97%

“…Accelerated testing is used to provide predictive equations for long-term performance [2,6,8], as longterm testing are associated with high cost and impractical. In accelerated degradation tests are designed using accelerated factors which determine the rate at which the degradation processes is accelerated.…”

Section: Introductionmentioning

confidence: 99%

Long-Term Performance of RC Members Externally Strengthened by FRP Exposed to Different Environments

et al. 2012

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Environmental conditions in the Gulf region are considered to be very aggressive to most structures. The main objective of the paper is to study the performance of RC elements (beams and slabs) strengthened by externally bonded FRP using carbon fiber-reinforced polymer (CFRP) sheets and strips and exposed to different environmental conditions. Six exposure conditions were used in the investigation to represent the Gulf region various environments. The exposure conditions used are laboratory, site, high temperature and humidity, cyclic drinking water, cyclic sea water and being embedded in Sabkha soil. The results presented in this paper are a part of a 36-month study program to evaluate the performance of different strengthened RC elements. This paper includes the 18-month test results after exposing the specimens to different environmental conditions. Comparison of the test results with the virgin elements (i.e. at 28 days of age and not exposed to the different environments) is carried out to quantify the change in performance of the elements. The performance of the structural elements is evaluated by measuring various deformations such as deflections, concrete strain, reinforcing steel strain and strain in the CFRP sheets and strips. Also, the mode of failure is reported. It was found that beams and slabs strengthened with CFRP strips were greatly affected by the exposure conditions compared with those strengthened by CFRP sheets. Sabkha soil and sea water were found to be the most aggressive environments.

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“…The effectiveness of FRP in improving bending and shear capacities in flexural elements and confinement in compression elements is well established in literature [10][11][12]. Their effectiveness in the tropical climate of India is also studied in detail [13][14][15][16]. A spin-off from FRP wrapping can be that it creates a barrier layer against the ingress of moisture and other deleterious matter.…”

Section: Introductionmentioning

confidence: 98%

Ultrasonic guided waves for monitoring corrosion of FRP wrapped concrete structures

Sharma

et al. 2015

Construction and Building Materials

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Performance of externally bonded GFRP sheets on concrete in tropical environments. Part I: Structural scale tests

Cited by 20 publications

References 13 publications

Numerical modelling of moisture diffusion in FRP with clustered microstructures

Numerical modelling of moisture diffusion in FRP with clustered microstructures

Long-Term Performance of RC Members Externally Strengthened by FRP Exposed to Different Environments

Ultrasonic guided waves for monitoring corrosion of FRP wrapped concrete structures

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