Textile Reinforced Mortars (TRM)versus Fiber ReinforcedPolymers (FRP) as StrengtheningMaterials of Concrete Structures

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Title: Textile Reinforced Mortars (TRM)versus Fiber ReinforcedPolymers (FRP) as StrengtheningMaterials of Concrete Structures

Author(s): T.C. Triantafillou and C.G. Papanicolaou

Publication: Special Publication

Volume: 230

Issue:

Appears on pages(s): 99-118

Keywords: concrete; confinement; FRP; mortars; shear strengthening;textiles

Date: 10/1/2005

Abstract:
Fiber reinforced polymers (FRP) are investigated in this study in comparisonwith a new class of materials, textile reinforced mortars (TRM), for shear strengtheningand/or seismic retrofitting of concrete structures. Textiles comprise fabric meshesmade of long woven, knitted or even unwoven fiber rovings in at least two (typicallyorthogonal) directions. Mortars – serving as binders – contain polymeric additives inorder to have improved strength properties. In this study, experimental investigationswere carried out in order to provide a better understanding on the effectiveness of TRMversus FRP jackets as a means of increasing: (i) the axial capacity of concrete throughconfinement; and (ii) the load-carrying capacity of shear-critical reinforced concreteflexural members. From the results obtained it is strongly believed that the proposedTRM strengthening technique is a viable alternative to the already successful FRPstrengthening technique.