Shear Strength of Synthetic Fiber-Reinforced Concrete Box Culverts

Mostafazadeh, M.; Abolmaali, Ali; Ghahremannejad, Masoud

doi:10.1061/(asce)be.1943-5592.0001402

Cited by 8 publications

(2 citation statements)

References 5 publications

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“…Similar results were obtained by Mostafazadeh et al [12,13] in 2016 who studied box culverts of MSFRC. For this, the authors performed 30 shear tests using the Japanese direct shear test [11] as Figure 4 shows.…”

Section: Direct Shear Tests Using Syfrcsupporting

confidence: 86%

State-of-the-Art Review of Synthetic Fibres as Shear Reinforcement in Concrete Elements

Navarro‐Gregori¹

2023

hya

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Shear failure is considered one of the most critical modes of failure in concrete structures, especially for those elements without shear reinforcement. In the last sixty years, the research community has shown much interest to solve this problem. In fact, since the 80's years, the use of fibres dispersed in the matrix as shear reinforcement has been explored as an alternative of traditional reinforcement. Several investigations have shown that the addition of fibres in correct proportions, enhances the shear behaviour in concrete elements with and without shear reinforcement. Most of this knowledge has been built using steel fibres. However, macro-synthetic fibres have also been introduced for structural applications in concrete. Some recent publications have reported the success of macro-synthetic fibres to be used as shear reinforcement in structural elements. Within this framework, the present paper aims to review the existing literature about the use of synthetic fibres as shear reinforcement in structural concrete elements.

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Section: Direct Shear Tests Using Syfrcsupporting

confidence: 86%

State-of-the-Art Review of Synthetic Fibres as Shear Reinforcement in Concrete Elements

Navarro‐Gregori¹

2023

hya

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“… Box culverts, where polypropylene fibres increase shear capacity and ductility [33].  Building applications like structure retrofitting.…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of polypropylene fibres as shear reinforcement in structural elements

Navas¹,

Roberto²

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Several efforts have been made in experimental and theoretical research about shear to understand all the variables that influence the phenomenon. Nowadays, however, due to its complexity, the shear performance of structural concrete elements, especially those without any traditional transversal reinforcement, continue with no clear explanation of the problem. Uncertainty about the problem grows when new variables like fibres are incorporated into the shear study.Research works have demonstrated the effectiveness of steel fibre in improving the mechanical properties of concrete elements. Experimental results reveal that steel fibres have proven effective in improving shear resistance, and they confer some concrete elements more ductility. In adequate amounts, steel fibres can completely or partially substitute traditional shear reinforcements. This is why international codes have included some requirements to take into account the action of fibres on the shear response of concrete elements. However, most recommendations and requirements for steel fibre-reinforced concrete (SFRC) were originally created.New fibres with different materials properties and shapes, such as macrosynthetic fibres, are now available on the market. These fibres, some of which are made of polypropylene, are an alternative in the construction industry given their properties and final cost. Initially, polypropylene fibres were used to control shrinkage cracking. Nevertheless, in the last decade the chemical industry has created larger fibres with better surface shapes, which allows polypropylene fibres to meet the requirements of international codes so they can be used in structural elements.Per avaluar l'efectivitat de les fibres de polipropilè en el tallant, es realitzaran tres campanyes experimentals. Cada campanya representa un nivell d'estudi diferent. El primer és a nivell material on s'avalua el comportament a tallant a través d'espècimens tipus Push-off. El segon nivell, correspon a l'estudi del tallant en elements a escala real. Per això es fabriquen i assagen bigues esveltes crítiques a tallant. L'últim nivell correspon a una aplicació real de fibres de polipropilè actuant com a reforç a tallant. En aquesta campanya, es fabriquen i assagen plaques alveolars de gran cantell amb seccions i condicions de suports reals.

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Mechanical, flexural and microstructural properties of cement-tailings matrix composites: Effects of fiber type and dosage

Xue

Yilmaz

Song

et al. 2019

Composites Part B: Engineering

144

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Shear Strength of Synthetic Fiber-Reinforced Concrete Box Culverts

Cited by 8 publications

References 5 publications

State-of-the-Art Review of Synthetic Fibres as Shear Reinforcement in Concrete Elements

State-of-the-Art Review of Synthetic Fibres as Shear Reinforcement in Concrete Elements

Effectiveness of polypropylene fibres as shear reinforcement in structural elements

Mechanical, flexural and microstructural properties of cement-tailings matrix composites: Effects of fiber type and dosage

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