Title: Textile reinforced mortars (TRM) as strengthening technique for reinforced concrete structures
Original Title: Tkaninom armirani mortovi (TRM) kao tehnika pojačavanja AB konstrukcija
Authors: Martina Carić
DOI: https://doi.org/10.5592/CO/ZT.2017.15
First page: 139 Last page: 145
Publish date: 18.9.2017 Publish date online: 18.9.2017
Abstract: In the last years, textile reinforced mortars (TRM) have been studied for the strengthening of structures. TRM are composites made of fibres (glass, carbon, basalt, PBO) embedded in inorganic (cementitious) matrix. They have been developed due to fibre reinforced polymers (FRP) epoxy matrix´s disadvantages. Inorganic matrix has higher thermal capacity and tensile behavior of material is non linear elastic. Fibre rovings form fabric grids in order to achieve the bond with the matrix through penetration of mortar through the fabric. Several studies have been carried out on the strengthening of reinforced concrete and masonry structures. Strengthening of reinforced concrete (RC) slabs, beams and columns is presented in this paper. Parameters that affect the effectiveness of composite action, and thus the effectiveness of strengthened elements are highlighted.
Sažetak: Posljednjih se godina za pojačanja konstrukcija istražuju tkaninom armirani mortovi (TRM). To su kompoziti koji se sastoje od vlakana (staklenih, ugljičnih, bazaltnih, PBO) i anorganske (cementne) matrice. Nastali su iz potrebe za rješavanjem nedostataka epoksidne matrice kod vlaknima armiranih polimera (FRP-a). Anorganska matrica ima veći toplinski kapacitet, a ponašanje elementa u vlaku nije linearno elastično. Snopovi vlakana su formirani u mreže kako bi se ostvarila povezanost s matricom. Provedeno je više istraživanja pojačanja armiranobetonskih i zidanih konstrukcija, a u ovom radu prikazana su pojačanja armiranobetonskih (AB) ploča, greda i stupova. Istaknuti su parametri koji utječu na učinkovitost kompozitnog djelovanja, a time i učinkovitost pojačanja te ponašanje pojačanih elemenata.