Flexural behavior of concrete slabs strengthened with textile reinforced geopolymer mortar

Zhang, Hai Yan; Liu, Haoyu; Kodur, Venkatesh; Li, Meng Yuan; Zhou, Yun

doi:10.1016/j.compstruct.2022.115220

Cited by 36 publications

(19 citation statements)

References 37 publications

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“…The supports and the loading plates were modelled as C3D8R solid elements having similar properties as rebars. Generally, most finite element models utilise solid elements to model cementitious polymer mortars (Adheem et al, 2021;Kadhim et al, 2022) and alkali-activated mortars (Zhang et al, 2022). Textiles can be modelled as two-node truss elements and there are instances where textiles have been modelled as shell elements in the literature (Zhang et al, 2022).…”

Section: Finite Element Types Adoptedmentioning

confidence: 99%

“…Generally, most finite element models utilise solid elements to model cementitious polymer mortars (Adheem et al, 2021;Kadhim et al, 2022) and alkali-activated mortars (Zhang et al, 2022). Textiles can be modelled as two-node truss elements and there are instances where textiles have been modelled as shell elements in the literature (Zhang et al, 2022). When textiles are modelled as linear two-dimensional rather than three-dimensional elements, it can be tedious to run owing to the type of finite element chosen.…”

Section: Finite Element Types Adoptedmentioning

confidence: 99%

“…, 2022). Textiles can be modelled as two-node truss elements and there are instances where textiles have been modelled as shell elements in the literature (Zhang et al. , 2022).…”

Section: Finite Element Model Developmentmentioning

confidence: 99%

“…Similarly, Carbon Textile Reinforced Mortars (CTRM) textiles were combined with a geopolymer matrix to strengthen one-way slabs using geopolymer mortar. CTRM performances were compared with polymer mortar strengthened one-way slabs (Zhang et al, 2022). One, two and three layers were applied with 10 mm and 100 mm textile spacing, with one specimen having an anchorage made of the same textile fibres.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Finite element modelling of reinforced concrete one-way slabs strengthened using basalt textile reinforced mortars

Revanna

Moy

2022

MMMS

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PurposeThis paper employs a textile reinforcement strain comparison to study the response of Textile Reinforced Mortars (TRM) strengthened reinforced concrete one-way slab members in flexure using the finite element method. Basalt TRM (BTRM) is a relatively new composite in structural strengthening applications. Experimental data on BTRMs are limited in the literature and numerical analyses can help further the understanding of this composite. With this notion, Abaqus finite element software is utilised to create a numerical method to capture the mechanical response of strengthened slab members instead of time-consuming laboratory experiments.Design/methodology/approachA numerical method is developed and validated using existing experimental data set on one-way slabs strengthened using Basalt TRMs from the literature. An explicit solver is utilised to analyse the finite element model created using calibrated Concrete Damage Plasticity (CDP) parameters according to the experimental requirements. The generated model is applied to extract load, deflection and rebar strains sustained by strengthened reinforced concrete slabs as observed from the experimental reference chosen. The applicability of the developed model was studied beyond parametric studies by comparing the generated finite element tensile strain by the textile fibre with available formulae.FindingsCDP calibration done has shown its adaptability. The predicted results in the form of load versus deflection, tensile and compressive damage patterns from the numerical analysis showed good agreement with the experimental data. A parametric study on various concrete strength, textile spacing and TRM bond length obtained shows TRM’s advantages and its favourability for external strengthening applications. A set of five formulae considered to predict the experimental strain showed varied accuracy.Originality/valueThe developed numerical model considers strain sustained by the textile fibre to make results more robust and reliable. The obtained strain from the numerical study showed good agreement with the experiment results.

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Section: Finite Element Types Adoptedmentioning

confidence: 99%

Section: Finite Element Types Adoptedmentioning

confidence: 99%

“…, 2022). Textiles can be modelled as two-node truss elements and there are instances where textiles have been modelled as shell elements in the literature (Zhang et al. , 2022).…”

Section: Finite Element Model Developmentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Finite element modelling of reinforced concrete one-way slabs strengthened using basalt textile reinforced mortars

Revanna

Moy

2022

MMMS

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Experimental investigation on the effect of geopolymer adhesive on the bond behavior between CFRP and concretes

Liu

Yan

2022

Polymer Composites

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The application of geopolymer adhesive to CFRP-strengthened the RC structure is a new green reinforcement method, and the bonding behavior of geopolymer adhesive was studied in this paper. The geopolymer mechanical properties orthogonal test was conducted and the optimal proportion was obtained, which summarized the influence of slag powder content, liquid-solid ratio, and water glass modulus. A total of 15 adhesively bonded CFRP-concrete double-lap joints were fabricated and tested under shear loading to investigate the effect of geopolymer adhesive on the bonding behaviors. Modified bondslip models of the geopolymer adhesive specimens were developed and compared with the test date. The results showed that the failure models of epoxy adhesive and geopolymer adhesive are different. The bond strength, interface stiffness, and maximum shear stress of the geopolymer adhesive specimen can reach 93.6% ~97.6%, 95.7% ~132.9%, and 91% ~94% of the bond strength of epoxy adhesive respectively. The predicted τ max and s 0 of the proposed model are in excellent agreement with the experimental data, and the maximum deviation is À9.58%. This study proposes that geopolymer could be applied as an effective adhesive in the strengthening of RC structures.

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An Experimental Study on the Thermo-mechanical Properties of Cement Mortar with Textile Fibers for Building Applications

Ayed¹,

Borri

Gasa

et al. 2023

RILEM Bookseries

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Flexural behavior of concrete slabs strengthened with textile reinforced geopolymer mortar

Cited by 36 publications

References 37 publications

Finite element modelling of reinforced concrete one-way slabs strengthened using basalt textile reinforced mortars

Finite element modelling of reinforced concrete one-way slabs strengthened using basalt textile reinforced mortars

Experimental investigation on the effect of geopolymer adhesive on the bond behavior between CFRP and concretes

An Experimental Study on the Thermo-mechanical Properties of Cement Mortar with Textile Fibers for Building Applications

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