FRP-encased concrete as a structural material

Fardis, Michael N.; Khalili, Homayoun H.

doi:10.1680/macr.1982.34.121.191

Cited by 254 publications

(105 citation statements)

References 0 publications

Supporting

Mentioning

102

Contrasting

Unclassified

Order By: Relevance

“…This aspect of behaviour is being further investigated. Figure 15 shows a general comparison of results for glass and carbon FRP confined concrete and confinement models by Eurocode 8, Mander et al [16], Fardis et al [17] and Karbhari et.…”

Section: Failure Modementioning

confidence: 99%

RC column strengthening by lateral pre-tensioning of FRP

Mortazavi

Pilakoutas

Son

2003

Construction and Building Materials

View full text Add to dashboard Cite

This paper presents a unique strengthening technique for existing concrete columns that uses expansive materials to apply lateral pre-tensioning. The technique increases the capacity and ductility of a column as well as achieving better utilisation of the confining FRP (Fibre Reinforced Polymer) material. The confinement material properties and the confined cylinder performance are investigated experimentally. From the results it is shown that it is possible to control the degree of applied pre-tension by controlling the amount of expansive material used. In addition, it is confirmed that jacketing columns by pre-tensioned FRP materials can increase the load bearing capacity up to 35% compared with no pre-tensioning and up to more than 4 times compared with unconfined concrete. The paper presents details of experimental work undertaken for the development of the confinement pressure with different confining materials (Carbon-CFRP, Glass-GFRP and Steel) and makes comparisons with predictive models.

show abstract

Section: Failure Modementioning

confidence: 99%

RC column strengthening by lateral pre-tensioning of FRP

Mortazavi

Pilakoutas

Son

2003

Construction and Building Materials

View full text Add to dashboard Cite

show abstract

“…In the early of 1980s, the concept of FRP tube-encased concrete column was proposed by Fardis and Khalili [17]. Since no direct chemical bond applied in between the tube and concrete, desired loading pattern of the composites elements can be engineered during the prefabrication of the tubes.…”

Section: A Frp Wrap and Tube Encasement Confinement Systemsmentioning

confidence: 99%

“…Therefore, number of confinement models has been developed to model the stressstrain behavior of circular confined concrete [3][4][5][8][9]17,19,[22][23][24][25][26].…”

Section: Shape and Geometries Of Cross-sectionmentioning

confidence: 99%

State-of-the-art Studies on the FRP-confined Concrete

Sun¹,

Luo²

2017

Proceedings of the 2016 International Conference on Architectural Engineering and Civil Engineering

View full text Add to dashboard Cite

Abstract-The application of FRP in civil engineering has emerged as a popular method of column retrofitting and strengthening. Numerous experimental studies have proven that the confinement with FRP-wrap or tube encasement could enhance the strength, ductility and durability of concrete columns. The variation of each distinct experimental test result to its actual mean value is the general cause of modeling inaccuracy, and this appears to be a lack of consensus among the research community. This paper critically reviewed the current experimental studies with the emphasis on the revelation of the mechanical behavior of FRP-confined concrete and analytical study of its behavior. Lastly, some comments are made on the development trends of study on the mechanical behavior of FRP-confined concrete columns.

show abstract

“…This is considered in the analysis of the flexural behaviour of the concrete filled GFRP tubes. The existing design-oriented stress-strain models for FRPconfined concrete typically followed a bilinear stress-strain curve [31][32][33]. The bilinear curve consists of a parabolic ascending branch followed by straight line to describe both the ascending and descending branches of the stress-strain curves of confined concrete [34,35].…”

Section: )mentioning

confidence: 99%

Influence of infill concrete strength on the flexural behaviour of pultruded GFRP square beams

Muttashar

Manalo

Karunasena

et al. 2016

Composite Structures

View full text Add to dashboard Cite

This paper presents experimental and analytical studies on the effect of the compressive strength of the concrete infill on the flexural behaviour of composite beams. Hollow pultruded Glass Fibre Reinforced Polymer (GFRP) square beams (125 mm x125 mm x 6.5 mm) filled with concrete having 10, 37 and 43.5 MPa compressive strength were tested under static four-point bending. The results indicate that filled GFRP beams failed at a load 100 to 141% higher than hollow beams and showed 25% increase in stiffness. However, the increase in concrete compressive strength from 10 to 43.5 MPa increased the ultimate load by only 19% but exhibited almost the same flexural stiffness indicating that a low strength concrete is a practical solution to fill the GFRP profiles to be used as beam applications. Moreover, the concrete infill prevented the premature buckling and web crushing of the GFRP tube. The maximum strain measured at failure is similar to the compressive strain determined from the coupon test indicating the effective utilisation of the GFRP material. Finally, Fibre Model Analysis which considered the partial confined stress -strain curve for the concrete infill gave an accurate prediction of the flexural behaviour of the concrete filled GFRP sections.

show abstract

FRP-encased concrete as a structural material

Cited by 254 publications

References 0 publications

RC column strengthening by lateral pre-tensioning of FRP

RC column strengthening by lateral pre-tensioning of FRP

State-of-the-art Studies on the FRP-confined Concrete

Influence of infill concrete strength on the flexural behaviour of pultruded GFRP square beams

Contact Info

Product

Resources

About