Textile-reinforced mortar: Durability in salty environment

Alatawna, Amr; Nahum, Lior; Sripada, Raghu; Birenboim, Matan; Regev, Oren; Peled, Alva

doi:10.1016/j.cemconcomp.2022.104534

Cited by 10 publications

(2 citation statements)

References 30 publications

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“…The mechanical properties of TRC materials in a chloride salt environment were investigated by Alatawna et al (2022), and it was found that the bond strength of CTRC reinforced slabs showed enhanced due to the growth of salt crystals at the matrix-textile interface. Li et al (2019Li et al ( , 2020 examined the axial seismic behavior of CTRC-confined columns under chloride salt attack.…”

Section: Introductionmentioning

confidence: 99%

Study on the Axial Load Response of RC Columns Confined by CTRC Subjected to Dry-Wet Cycles

Zhang

Zheng

et al. 2023

ACT

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To investigate the axial load response of reinforced concrete (RC) columns confined by carbon textile-reinforced concrete (CTRC) under chloride attack, 24 CTRC-confined square columns and 12 unconfined columns were tested under axial load, while considering the influences of dry-wet cycles, textile ratios, stirrup ratios, and section sizes. The experimental results indicate that the corrosion resistance and compression performance of RC columns under chloride ion erosion were significantly improved by CTRC. The corrosion of the RC column with CTRC confinement was remarkably reduced with a maximum of 63.9% in the chloride salt environment. The maximum increments of bearing capacity and ductility of CTRC-confined columns were 30.9% and 87.7%, respectively, compared with unconfined columns. In addition, bearing capacity, ductility, and deformation energy were also affected by stirrup ratios and section sizes. Finally, the semiempirical and semi-theoretical analytical models of the stress-strain relationship and axial-bearing capacity were proposed based on the experimental data and theoretical analysis. The compound confinement effects of CTRC and corroded stirrups on core concrete was considered in the proposed models. The models correlated well with the experimental data.

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Section: Introductionmentioning

confidence: 99%

Study on the Axial Load Response of RC Columns Confined by CTRC Subjected to Dry-Wet Cycles

Zhang

Zheng

et al. 2023

ACT

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“…In recent years, textile-reinforced concrete (TRC), consisting of a textile grid and cement-based matrix, was widely used for the repair and strengthening of deteriorated or structurally deficient concrete elements under various environmental conditions [8][9][10][11]. RC beams [9,12] and RC slabs [13,14] were successfully strengthened with a cast-in-place (CIP) TRC system.…”

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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