Strengthening of Unreinforced Brick Masonry Panel Using Cast-in-Place and Precast Textile-Reinforced Concrete

Gopinath, Smitha; Madheswaran, C. K.; Prabhakar, J. V.; Devi, K. G. Thivya; Anuhya, C. Lakshmi

doi:10.1080/13632469.2020.1713926

Cited by 10 publications

(4 citation statements)

References 30 publications

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“…This led to the development of a new class of materials, named textile reinforced concrete (TRC), textile reinforced mortar (TRM), or fabric reinforced cementitious matrix (FRCM). Such material was successfully used to strengthen both masonry [2][3][4][5][6] and reinforced concrete (RC) [7][8][9][10] structures.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on shear strengthening with fiber/textile reinforced concrete

Rossi,

Randl,

Mészöly

et al. 2023

Structural Concrete

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The use of textile reinforced concrete (TRC) as a shear strengthening solution for reinforced concrete (RC) structures is a viable and effective strategy. The low tensile strength of the cementitious matrix used to produce TRC, however, can strongly limit the performance achievable by such material. Using fiber/textile reinforced concrete (F/TRC), that is, TRC where short‐dispersed fibers were admixed to the cementitious matrix, has proven to overcome such limitations. An experimental campaign, aimed at assessing the influence of the fiber‐reinforced cementitious matrix, the number of layers, and their anchoring, was performed at the structural laboratory of Carinthia University of Applied Sciences. F/TRC strengthening configurations were tested on real‐scale T‐beams without internal transversal reinforcement. The results highlight the contribution of the cementitious matrix and hint at the possibility of simply summing its contribution to the one of the textile fabrics, while appropriate end‐anchorage seems to improve the performance of both elements.

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Section: Introductionmentioning

confidence: 99%

Experimental investigation on shear strengthening with fiber/textile reinforced concrete

Rossi,

Randl,

Mészöly

et al. 2023

Structural Concrete

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“…Several researchers reported the merits and demerits observed under different reinforcing techniques. The use of fiber-reinforced polymer with organic (epoxy-resin-based) composites for applications in masonry structures is discouraged because of the drawbacks pertaining to diminished performance at elevated temperatures, requirements of protective coatings, degradation of mechanical properties after continuous exposure to certain environmental surroundings [5], lack of Buildings 2023, 13,1495 2 of 21 compatibility between the resin and masonry surface, production of toxic gases associated with the use of FRP resin in epoxy application and relatively higher level of care and supervision required in application [6,7]. To overcome these drawbacks, environmentally friendly, thermal-resistant, non-corrosive composite material is used to reinforce walls by replacing FRPs with geo-fabric materials [8][9][10], and results showed that these geo-fabrics help to increase the shear and flexural capacity [11,12].…”

Section: Introductionmentioning

confidence: 99%

Response of Masonry-Infilled Reinforced Concrete Frames Strengthened at Interfaces with Geo-Fabric under In-Plane Loads

2023

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The interfaces between masonry infill and reinforced concrete (MI-RC) frames are identified as the weakest regions under lateral loads. Hence, the behavior of such frames under lateral loads can be understood mainly through experimental investigations. The deformation demands induced by horizontal loads on RC frames with infill masonry walls change due to contact losses between the infill masonry and the RC frames. This can be controlled by providing proper reinforcements at the interfaces. In the present experimental investigation, three half-scaled models subjected to reversed cyclic lateral in-plane loads were tested. In detail, the specimens considered are the MI-RC frame model, an MI-RC frame with geo-fabric reinforcement at the interface and an MI-RC frame with geo-fabric reinforcement at interfaces with an open ground story. The models were subjected to reversed cyclic lateral in-plane loads, and the post-yield responses of the models with respect to stiffness degradation, drift, energy dissipation, ductility and failure mode have been discussed.

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“…RC beams [9,12] and RC slabs [13,14] were successfully strengthened with a cast-in-place (CIP) TRC system. Precast TRC panels were used in new construction [15,16], and in strengthening existing structures [17]. A lack of design guidelines and testing methods for TRC systems was one shortcoming of the TRC systems over the conventional system in earlier applications.…”

Section: Introductionmentioning

confidence: 99%

Underwater Repair of Concrete Elements with TRC Grouting System

2022

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The repair of underwater concrete structures is usually difficult work, requiring specialized materials and installation systems. This paper presents a carbon-textile-reinforced concrete (TRC) grouting system for underwater repair of concrete structures. One multi-purpose grout and two types of underwater grouts were considered in this study, and the bond performance between the substrate and grout was evaluated by a bi-surface shear test with cubic specimens. The bond strength of the repair material is greatly affected by the casting and curing conditions. When the multi-purpose grout is used, the average bond strength of the specimens cast and cured in dry conditions is only 22% of the specimens cast and cured in underwater conditions. On the other hand, the maximum difference in bond strength is, at most, 15.8% when non-dispersive, anti-washout grouts are used. Two types of installation methods were proposed and four full-scale RC slab specimens were repaired with the TRC grouting method, two for each installation method. Regardless of the installation method, the load levels that causes concrete cracking, steel yield, and the failure of specimens repaired with the TRC grouting system are at least 37.5%, 16.6%, and 21.7% greater than those of the unrepaired specimen, respectively. The test results further indicate that the influence of the grouting materials on the ultimate load-carrying capacity of the specimens repaired with the TRC grouting system is insignificant, and the maximum difference is, at most, 4%.

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Strengthening of Unreinforced Brick Masonry Panel Using Cast-in-Place and Precast Textile-Reinforced Concrete

Cited by 10 publications

References 30 publications

Experimental investigation on shear strengthening with fiber/textile reinforced concrete

Experimental investigation on shear strengthening with fiber/textile reinforced concrete

Response of Masonry-Infilled Reinforced Concrete Frames Strengthened at Interfaces with Geo-Fabric under In-Plane Loads

Underwater Repair of Concrete Elements with TRC Grouting System

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