Mechanical properties of steel fibre reinforced and rubberised cement-based mortars

Nguyen, Thuy-Anh; Toumi, Ahmed; Turatsinze, Anaclet

doi:10.1016/j.matdes.2009.05.006

Cited by 82 publications

(38 citation statements)

References 12 publications

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“…Turatsinze et al (2006) imply that rubber contributes to stress transfer when an external load is applied to the composite. The described behaviour is dependent on the quantity of rubber in the composite, and cannot be correlated with the presence of steel fibres (Nguyen et al 2010) (Fig. 9).…”

Section: Compressive Strengthmentioning

confidence: 97%

“…In their research, Turatsinze et al (2006) imply that as a low modulus aggregate, rubber particles act as crack arresters while steel fibres present a crack control mechanism, which is an indication of positive synergy between rubber particles and industrial steel fibres. It was therefore concluded that the efficiency of industrially produced steel fibres does not change even when cementitious materials are rubberized (Nguyen et al 2010).…”

Section: Application Of Recycled Steel Fibres In Concrete Technologymentioning

confidence: 99%

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Positive Interaction of Industrial and Recycled Steel Fibres in Fibre Reinforced Concrete

Bjegović

Baričević

Lakušić

et al. 2014

Journal of Civil Engineering and Management

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Abstract. In line with current "green" transport initiatives, Croatia plans to build over the next investment period a high speed railway line which will connect central Croatia and its capital with coastal regions of the country. According to design documents, the track system will be built using ballastless concrete solutions. In the scope of the project "Concrete track system -ECOTRACK", researchers from the University of Zagreb -Faculty of Civil Engineering analysed a new material, i.e. the rubberized hybrid fibre reinforced concrete (RHFRC), in order to find out whether its properties are adequate for the proposed concrete track system. The RHFRC contains by-products from mechanical recycling of waste tyres (rubber and steel fibres). The study of fibre and rubber interaction and their contribution to mechanical properties of the fibre reinforced concrete is presented, as extensive research on positive interaction between industrial and recycled steel fibres has not as yet been made. The results show that the RHFRC is an innovative, sustainable and cost-effective concrete, which is fully compliant with criteria prescribed in relevant standards.Keywords: fibre reinforced concrete, industrial steel fibres, recycled steel fibres, mechanical properties, recycled rubber, waste tyre.

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Section: Compressive Strengthmentioning

confidence: 97%

Section: Application Of Recycled Steel Fibres In Concrete Technologymentioning

confidence: 99%

Positive Interaction of Industrial and Recycled Steel Fibres in Fibre Reinforced Concrete

Bjegović

Baričević

Lakušić

et al. 2014

Journal of Civil Engineering and Management

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show abstract

“…This would help protect the environment by reducing disposal impacts and save costs since using these tires as a replacement of aggregate will save natural resources. Researchers (Khatib and Bayomy 1999;Güneyisi et al 2004;Papakonstantinou and Tobolski 2006;Balaha et al 2007;Zheng et al 2007;Khaloo et al 2008;Taha et al 2008;Zheng et al 2008;Topçu and Bilir 2009;Nguyen et al 2010;Pelisser et al 2011;Najim and Hall 2012;Eiras et al 2014) have studied the use of waste tire materials in different types of concrete mixtures as an aggregate replacement in the form of fine, coarse or fine and coarse fractions simultaneously. The results of their assessment indicated, in general, a reduction in mechanical properties, improvement in the energy absorption capacity, reduction in stiffness and enhancement in impact toughness.…”

Section: Introductionmentioning

confidence: 99%

Effect of cementation level on performance of rubberized cement-stabilized aggregate mixtures

2016

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An investigation and comparison is made of the effect of cement content on the performance of rubberized cement-stabilized aggregate mixtures and on cement-stabilized aggregate mixtures containing no rubber (RCSAMs and CSAMs). These materials are intended to be used as a base course for pavement structures. Three cement contents (3%, 5%, and 7% by dry weight of aggregate) were investigated. Rubberized mixtures were manufactured by replacing 30% of one aggregate fraction that has a similar gradation of crumb rubber.Performance was evaluated under static and dynamic testing. The investigated properties are unconfined compressive strength, indirect tensile strength, indirect tensile static modulus, toughness, dynamic modulus of elasticity, dynamic modulus of rigidity and dynamic Poisson's ratio. Increasing cement content increases strength of both types of mixtures, especially in the CSAMs. It is found that using crumb rubber at low cement content is more feasible than with high cement contents. Stiffnesses increased for both types of mixture as cement content increased but decreased on incorporation of crumb rubber. Energy absorption capacity was inversely related to stiffness. Mesostructural investigation revealed that the cracks were propagated through the rubber particles for all cement contents.

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“…In this context, the overlay considered is a cement composite incorporating rubber aggregates and steel fibres. Indeed, on the one hand, recent work pointed out that the use of rubber aggregates obtained from grinding end-of-life tyres is a suitable solution to improve the strain capacity of cement-based materials (Nguyen, Toumi, & Turatsinze, 2010;Nguyen, Toumi, Turatsinze, & Tazi, 2012;Toumi, Nguyen, & Turatsinze, 2013b). On the other hand, it is well known that fibre reinforcement is a suitable solution to control the cracking of cement-based materials.…”

Section: Introductionmentioning

confidence: 99%

Modelling of the debonding of steel fibre reinforced and rubberised cement-based overlays under fatigue loading

Toumi¹,

Nguyen²,

Turatsinze³

2014

European Journal of Environmental and Civil Engineering

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The paper focuses on the propagation of debonding along an interface between a concrete substrate and a cement-based thin-bonded overlay under fatigue loading. The investigated overlay materials were fibre reinforced and rubberised cement-based mortars. Tensile tests were performed to obtain the residual normal stress-crack opening relationship for the overlay materials. The drying shrinkage of the overlay materials was characterised by tests on prismatic specimens that showed the evolution of drying shrinkage vs. the mass loss. The substrate-overlay interface was investigated by static tensile tests to provide the relationship between debonding opening and residual normal tensile stress. Its evolution under fatigue loading was assumed to follow a cyclic bridging law for plain concrete. Three-point bending fatigue tests were then carried out on repaired substrate to obtain information on the structural behaviour of the interface. The debonding propagation was monitored by a video microscope with a magnification of 175×. Relying on the identified and quantified parameters, the above-mentioned fatigue tests were modelled by the finite element method using the CAST3M code developed in France by Atomic Energy Commission. A comparison between model and experimental results shows good agreement and proves the important role of fibre reinforcement and of rubber aggregates on the durability of the repair with respect to debonding.

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Mechanical properties of steel fibre reinforced and rubberised cement-based mortars

Cited by 82 publications

References 12 publications

Positive Interaction of Industrial and Recycled Steel Fibres in Fibre Reinforced Concrete

Positive Interaction of Industrial and Recycled Steel Fibres in Fibre Reinforced Concrete

Effect of cementation level on performance of rubberized cement-stabilized aggregate mixtures

Modelling of the debonding of steel fibre reinforced and rubberised cement-based overlays under fatigue loading

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