Interfacial bonding of fine aggregate concrete to low modulus fibers

Jamshidi, Masoud; Pakravan, Hamid Reza; Latifi, Masoud

doi:10.1016/j.conbuildmat.2015.07.024

Cited by 13 publications

(2 citation statements)

References 18 publications

(21 reference statements)

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“…Moreover, as mentioned before, RTSF may experience breakage or rupture during the fibre pull-out process due to its higher bonding strength with the cementitious matrix or its irregular geometry (Frazão et al, 2019). Thus, the ultimate deflection or area under the load-deflection curve would be lower resulting in reduced toughness properties (Halvaei et al, 2015). If RTSF and PPF can be well orientated within the mixture, a positive synergy can be formed, which increases the toughening mechanism of FRC.…”

Section: Flexural Toughness and Residual Strength Factormentioning

confidence: 99%

“…especially when the fibre concentration dosage is exceeded). The weak interaction with the cementitious matrix led to the reduced load-carrying capacity of the whole composite, but the slippage and de-bonding of the PPF at the continuously opening crack still contributed to the enhanced energy absorption (Halvaei et al, 2015;Ranjbar and Zhang, 2020). Splitting tensile strength and flexural strength are commonly used to indirectly evaluate the tensile strength of concrete.…”

Section: Load-deflection Behaviourmentioning

confidence: 99%

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Experimental study on engineering properties of concrete reinforced with hybrid recycled tyre steel and polypropylene fibres

Zhong

Zhang

2020

Journal of Cleaner Production

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Recycled tyre steel fibre (RTSF) is considered as a potential and sustainable alternative to manufactured steel fibre (MSF), while RTSF resulted in lower energy absorption capacity and more serious corrosion problem in concrete compared to MSF. This paper presents an experimental study on engineering properties of concrete reinforced with hybrid RTSF (0.5%e0.9% V f ) and polypropylene fibre (PPF, 0.1% e0.5% V f ). Results show that combining RTSF with PPF could compensate the serious workability loss caused by RTSF and the workability was improved by 38.9%e66.7%. However, the compressive, splitting tensile and flexural strengths were weakened significantly when PPF was over 0.3% V f in hybrid fibre reinforcement (total content of 1.0% V f ). The strain field shown in digital image correlation images suggests that hybrid RTSF and PPF can create a synergistic effect in restraining the crack growth and the post-cracking behaviour of concrete especially toughness that was enhanced with the presence of PPF. RTSF was more effective in restraining shrinkage of concrete than PPF. With the increase of PPF content in hybrid fibre reinforcement, the chloride migration coefficient of concrete was reduced by 4.9%e6.8% as compared with the mixture reinforced with only RTSF.

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Section: Flexural Toughness and Residual Strength Factormentioning

confidence: 99%

Section: Load-deflection Behaviourmentioning

confidence: 99%

Experimental study on engineering properties of concrete reinforced with hybrid recycled tyre steel and polypropylene fibres

Zhong

Zhang

2020

Journal of Cleaner Production

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Experimental study on the mechanical properties and the microstructure of hybrid‐fiber‐reinforced concrete under an early stage

Huang

Yuan

Zhang

et al. 2019

Structural Concrete

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Based on the fixed aspect ratio of 650 for carbon fiber (CF) in hybrid‐fiber‐reinforced concrete (HFRC), this study investigated the effect of polypropylene fiber (PPF) and the aramid fiber (AF) aspect ratio on the mechanical properties of HFRC under the early stage. For this purpose, compressive, splitting tensile, and flexural tests were carried out to obtain the optimal hybridization parameters with respect to the aspect ratio of polypropylene fiber (PPF‐AR) and aramid fiber (AF‐AR) in HFRC. Additionally, the microstructure of HFRC was also examined by scanning electron microscope method to investigate the bond properties between fiber and a concrete matrix. It can be found from the results that the failure modes of overall tests are a ductile failure. The enhancement of tensile strength is attributed to PPF‐AR, whereas AF‐AR mainly tends to improve the performance in compressive and flexural strength. Meanwhile, the aspect ratio of fibers has little effect on the tensile‐to‐compressive‐strength ratio (TC‐R) or the flexural‐to‐compressive‐strength ratio (FC‐R) of early‐stage HFRC.

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Recent developments in pullout behaviors and tensile properties of ultra-high-performance concrete reinforced with steel fiber

Wu,

Zang,

Deng

et al. 2023

Archiv.Civ.Mech.Eng

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Interfacial bonding of fine aggregate concrete to low modulus fibers

Cited by 13 publications

References 18 publications

Experimental study on engineering properties of concrete reinforced with hybrid recycled tyre steel and polypropylene fibres

Experimental study on engineering properties of concrete reinforced with hybrid recycled tyre steel and polypropylene fibres

Experimental study on the mechanical properties and the microstructure of hybrid‐fiber‐reinforced concrete under an early stage

Recent developments in pullout behaviors and tensile properties of ultra-high-performance concrete reinforced with steel fiber

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