Mechanical properties of fibre reinforced concrete with recycled fibres

Grzymski, Filip; Musiał, Michał; Trapko, Tomasz

doi:10.1016/j.conbuildmat.2018.11.183

Cited by 106 publications

(43 citation statements)

References 34 publications

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“…around 13%). This could be also attributed to the non-uniform dimension of RTSF, which might affect the internal structure of RSFRAM leading to reduced performance (Grzymski et al, 2019). This can be observed from Fig.…”

Section: Residual Strength Factormentioning

confidence: 96%

“…In recent years, recycled tyre steel fibre (RTSF) was introduced into cementitious materials to maximise the usage of recycled materials and further promote the sustainable development. The effect of RTSF on mechanical and durability performances of fibre reinforced concrete (FRC) has been extensively investigated (Aiello et al, 2009;Bjegovic et al, 2014;Centonze et al, 2012;Frazão et al, 2019;Grzymski et al, 2019;Neocleous et al, 2008;Skarżyński and Suchorzewski, 2018;Zamanzadeh et al, 2015). However, very limited study can be found in literature regarding the effect of RTSF on the properties of CRC.…”

Section: Introductionmentioning

confidence: 99%

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Engineering properties of crumb rubber alkali-activated mortar reinforced with recycled steel fibres

Zhong

Poon

Chen

et al. 2019

Journal of Cleaner Production

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To mitigate the potential problems of waste tyres and Portland cement greenhouse gas emissions while further promote the sustainable development of construction industry, this paper, for the first time, explores the workability and mechanical properties of crumb rubber alkali-activated fly ash-slag mortar reinforced with recycled tyre steel fibre (RSFRAM) considering different contents of crumb rubber (CR, i.e. 5%, 10% and 15% replacement by volume of fine aggregate) and recycled tyre steel fibre (RTSF, i.e. 0.5% and 1.0% by volume). The results indicate that the inclusion of CR led to a 4.7% to 26.7% improvement in workability of RSFRAM when the RTSF content was low, while the addition of RTSF compensated the strength loss caused by the addition of CR. The combination of CR and RTSF created a synergistic effect on the flexural behaviour of RSFRAM. The optimal mixture was regarded as R5F1.0 (5% CR replacement and 1.0 vol.% RTSF) exhibiting comparable compressive strength, and superior flexural strength (around 171.1% higher), toughness indices (highest among all RSFRAMs) and residual strength factors (higher than 100) compared to the reference mixture without CR and RTSF. In addition, R5F1.0 can meet the strength requirement of concrete (i.e. 28 MPa for basic construction application) and thus suitable for structural applications as a sustainable material.

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Section: Residual Strength Factormentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Engineering properties of crumb rubber alkali-activated mortar reinforced with recycled steel fibres

Zhong

Poon

Chen

et al. 2019

Journal of Cleaner Production

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“…Todas las probetas de la tabla anterior contenían fibra y debe tomarse en cuenta que existe la posibilidad de que el valor obtenido sea en realidad algo menor que el del concreto si estuviese no reforzado. Esto puede deberse a la distorsión generada por las fibras en el concreto, especialmente aquellas orientadas de manera perpendicular a la dirección de aplicación de la carga (Grzymski, Musial, & Trapko, 2019).…”

Section: Fabricación De Las Vigas De Snfrcunclassified

Evaluación de una modificación en la norma ASTM C1609 para el estudio de concreto reforzado con fibras sintéticas sometido a flexión

Villalobos¹,

Murillo

2020

Met. y Mat.

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En el presente trabajo se evalua la viabilidad de una modificación a la norma ASTM C1609 con el fin de sentar evidencia de la conveniencia en la aplicación, o no, de ese estándar para ensayar concreto reforzado con fibras sintéticas (SNFRC) sometido a flexión. Igualmente, se buscó realizar una comparación entre los resultados de tal norma con respecto a los que provee el estándar europeo EN14651. Se determinó un comportamiento pseudodúctil del material en el que la incorporación de fibras le permite resistir cierta carga aun después de alcanzar su módulo de ruptura. La reducción en la velocidad de ensayo aumentó las probabilidades de tener resultados exitosos vía ASTM C1609, especialmente cuando el SNFRC tiene poca fibra añadida. Además, la modificación de velocidad no implicó alteraciones en los resultados del ensayo. Por otra parte, se encontró que la norma europea no produce problemas en la ejecución del ensayo, sin embargo, sus resultados no fueron en todos los casos comparables con lo obtenido a través de la norma norteamericana.

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“…Several problems like clumping of fibers and their non-uniform distribution are associated, if proper care is not taken during mixing of materials as reported by [17,18]. For this reason, first, small amounts of fibers were added to coarse aggregate and mixed until the desired quantity was added.…”

Section: Experimental Programmentioning

confidence: 99%

Fuzzy logic model for investigating the effect of steel fibers on mechanical properties of concrete

2019

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This study aimed to use fuzzy logic model to predict various mechanical properties such as compressive strength, flexural strength and post-peak deformation of steel-fiber reinforced concrete. For this purpose, five different dosages of steel fibers (10 kg/m 3 , 12.5 kg/m 3 , 15 kg/m 3 , 17.5 kg/m 3 and 20 kg/m 3) were used in the mix design. A total of 3 specimens (cylinders and beams) were casted for each fiber dosage and experimentally tested. The experimental results were compared with the simulated results obtained from fuzzy model using fuzzy logic toolbox provided in MATLAB®. It was found that the addition of steel fibers improved the flexural strength and post-peak deformation capability of test specimens by almost 12% and 20% respectively. The compressive strength of specimens also increased by 9.15%, when the amount of steel fibers was increased from 10 to 20 kg/m 3. Overall, the compressive strength reduced with the addition of fibers as compared to specimens with no fibers. Similarly, it was also observed that fuzzy model can predict the study parameters within acceptable accuracy and the percentage difference between the simulated and experimental values was below 7.5%.

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Mechanical properties of fibre reinforced concrete with recycled fibres

Cited by 106 publications

References 34 publications

Engineering properties of crumb rubber alkali-activated mortar reinforced with recycled steel fibres

Engineering properties of crumb rubber alkali-activated mortar reinforced with recycled steel fibres

Evaluación de una modificación en la norma ASTM C1609 para el estudio de concreto reforzado con fibras sintéticas sometido a flexión

Fuzzy logic model for investigating the effect of steel fibers on mechanical properties of concrete

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