Effect of Harsh Conditions on the Tensile Behaviour of Lap-Spliced Carbon Fiber Textile-Reinforced Mortar (TRM) with Different Surface Treatment Methods

Tran, Hai Van; Truong, Gia Toai; Choi, Kyoung‐Kyu

doi:10.3390/app9153087

Cited by 6 publications

(7 citation statements)

References 40 publications

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“…Distilled water, hydrochloric acid, and freeze-thaw cycles had a lesser impact on the performances. Tran et al (2019) evidenced that the lap-splice performances of carbon textiles can be affected by harsh conditions (saline, high temperature, humidity, sustained load). High temperatures affected the textile bonding, due to modifications in the organic resins used for impregnation (Liu et al 2019;Silva et al 2014; however, within certain temperature limits (≤200°C), TRM preheated and then tested at room temperature showed just small alterations (Colombo et al 2011;.…”

Section: Experimental Evidencesmentioning

confidence: 99%

Characterization of Textile-Reinforced Mortar: State of the Art and Detail-Level Modeling with a Free Open-Source Finite-Element Code

Boem

2022

J. Compos. Constr.

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The research addressed in the paper is aimed at calibrating a numerical model developed by using a free open-source finite-element code for the assessment of the structural performances of historical masonry buildings strengthened using the textile-reinforced mortar (TRM) technique. TRM is a near-surface-mounted system, which couples inorganic matrices with fiber-based textile or meshes. The main purpose is to develop a multiple-level numerical approach, starting with the detailed modeling of components and interfaces, followed by a computationally efficient intermediate level model, using layered elements, for the calibration of a lumped plasticity-based model suitable for the global analysis of structures. In this paper, the first research results are presented. In particular, a broad literature review concerning the mechanical characterization and analysis of TRM systems is collected. Then, the calibration of the numerical model, the validation through comparison with the results of experimental characterization tests available in the literature (tensile, shear bond, and in-plane shear tests) and a sensitivity analysis are reported. Nonlinear static analyses were performed, considering the nonlinearity of the composite material components and interfaces. The model was capable of accounting for the main parameters affecting the behavior of the composite material, such as the reinforcement ratio and orientation, the mortar characteristics and the wire-mortar interaction and proved to be a valid tool to investigate the optimization of TRM applicative details.

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Section: Experimental Evidencesmentioning

confidence: 99%

Characterization of Textile-Reinforced Mortar: State of the Art and Detail-Level Modeling with a Free Open-Source Finite-Element Code

Boem

2022

J. Compos. Constr.

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“…Table 1 summarises the mechanical properties of the grid, which is sand-coated (grain size of 0.3-0.8 mm) [29]. The sand-coated textile is employed in this study, as the surface coated textiles showed better bonding performance than uncoated textiles [15][16][17][23][24][25]. The mix composition of the mortar [16] is summarised in Table 2.…”

Section: Methodsmentioning

confidence: 99%

“…The minimum lap splice length of the textile grid is usually evaluated by a tensile test in accordance with a testing protocol, such as that specified in [ 22 ]. Numerous research groups [ 23 , 24 , 25 ] conducted direct tensile tests for TRC coupon specimens fabricated with lap-spliced textile grids. Overall, longer lap-spliced length of the textile grid gave better tensile performance than the shorter length.…”

Section: Introductionmentioning

confidence: 99%

Reinforced Concrete Slabs Strengthened with Lap-Spliced Carbon TRC System

2021

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Construction with precast or prefabricated elements requires the connecting of structural joints. This study presents an accelerated construction method to strengthen reinforced concrete (RC) slab-type elements in flexure using precast lap-spliced textile-reinforced concrete (TRC) panels. The objectives of this study are to identify the tensile behavior of a TRC system with lap-spliced textile, and to experimentally validate the performance of the proposed connecting method by flexural failure test for the concrete slabs strengthened by TRC panels with lap-spliced textile. Twenty-one coupon specimens were tested in tension with two different matrix systems and three different lap splice lengths. The influence of the lap splice length and matrix properties on the tensile performance of the TRC system was significant. Five full-scale RC slabs were strengthened by the precast TRC panels with and without the lap splice, and was tested in flexure. The results of the failure test for the strengthened specimens showed that the ultimate load of the strengthened specimen with the TRC panel increased by a maximum of 24%, compared to that of the unstrengthened specimen. Moreover, the failure-tested specimens were re-strengthened by a new TRC panel system and tested again in flexure. The objective of the re-strengthening of the damaged RC slabs by the TRC panel is to investigate whether the yielded steel reinforcement can be replaced by the TRC panel. The initial cracking load and the stiffness of the re-strengthened specimens were significantly increased by re-strengthening.

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“…Research on the effect of humidity on behaviour of TRC is limited [ 1 , 140 , 141 ]. The tensile properties of alumina cement-based mortar reinforced with uncoated CFRP mesh (TRC-ALC) under a high temperature and humidity environment (50 °C and 95% relative humidity) were investigated.…”

Section: Durability Of Trcmentioning

confidence: 99%

“…The tensile properties of alumina cement-based mortar reinforced with uncoated CFRP mesh (TRC-ALC) under a high temperature and humidity environment (50 °C and 95% relative humidity) were investigated. TRC coupons were stored at a constant temperature of 50 °C and relative humidity of 95% in a chamber for 60 days, then the direct tensile test was performed one day later [ 141 ]. The stiffness of TRC-ALC under the temperature of 50 °C and relative humidity of 95% decreased obviously, compared with the specimens exposed at room temperature and humidity (COM).…”

Section: Durability Of Trcmentioning

confidence: 99%

Mechanical Properties and Durability of Textile Reinforced Concrete (TRC)—A Review

Wu,

Pan,

Yan

2023

Polymers

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Textile reinforced concrete (TRC) is an innovative structure type of reinforced concrete in which the conventional steel reinforcement is replaced with fibre textile materials. The thin, cost-effective and lightweight nature enable TRC to be used to create different types of structural components for architectural and civil engineering applications. This paper presents a review of recent developments of TRC. In this review, firstly, the concept and the composition of TRC are discussed. Next, interfacial bond behaviour between fibre textile (dry and/saturated with polymer) and concrete was analysed considering the effects of polymer saturation, geometry and additives in polymer of the textile. Then, the mechanical properties (including static and dynamic properties) of TRC were reviewed. For static properties, the mechanical properties including compression, tension, flexural, shear and bond properties are discussed. For dynamic properties, the impact, seismic and cyclic properties were investigated. Furthermore, the durability of TRC under different environmental conditions, i.e., temperature/fire, humidity and wet–dry cycles, freeze–thaw, chemical and fatigue were discussed. Finally, typical engineering applications of TRC were presented. The research gaps which need to be addressed in the future for TRC research were identified as well. This review aims to present the recent advancement of TRC and inspire future research of this advanced material.

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Effect of Harsh Conditions on the Tensile Behaviour of Lap-Spliced Carbon Fiber Textile-Reinforced Mortar (TRM) with Different Surface Treatment Methods

Cited by 6 publications

References 40 publications

Characterization of Textile-Reinforced Mortar: State of the Art and Detail-Level Modeling with a Free Open-Source Finite-Element Code

Characterization of Textile-Reinforced Mortar: State of the Art and Detail-Level Modeling with a Free Open-Source Finite-Element Code

Reinforced Concrete Slabs Strengthened with Lap-Spliced Carbon TRC System

Mechanical Properties and Durability of Textile Reinforced Concrete (TRC)—A Review

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