Fresh and Hardened Properties of Fiber-Reinforced Rubber Concrete

Carroll, J. Chris; Helminger, Nicholas P.

doi:10.1061/(asce)mt.1943-5533.0001541

Cited by 42 publications

(18 citation statements)

References 11 publications

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“…Proposed model of tensile strength for steel fiber reinforced SCRC and rubberised concrete is presented in Equation (4). As can be seen from Figure which includes this study experimental results and results from, the model proposed for tensile strength in rubberised concrete with steel fibers is very similar to that of non‐rubberised SCC. The major observation from this data points to rubber aggregates having a positive relationship with steel fibers, where the fibers increase the tensile strength of all forms of concrete, adding fiber to rubberised concrete has an even greater positive effect.…”

Section: Analytical Studysupporting

confidence: 65%

“…Proposed model of compressive strength for steel fiber reinforced SCRC and rubberised concrete is presented in Equation (3). As can be seen from Figure which includes this study experimental results and results from, the effect of steel fibers on the compressive strength of concrete is, in general, minor, yet the difference in models when rubber is added is quite diverse. This shows that when rubber is used in conjunction with steel fibers, the positive effect of fibers is counteracted by the rubber aggregates.

{f^{'}}_{cf} / {f^{'}}_{c} = 0.1863 normalR . normalI . + 0.9483,

…”

Section: Analytical Studymentioning

confidence: 79%

“…Figure which includes this study experimental results and results from shows the relationship between the modulus of elasticity and the volume fraction of steel fibers. Compared to non‐rubberised concrete, the MOE of concrete with rubber is lower, but as the volume fraction of fibers increase, there is a stronger positive relationship, with the normalized MOE value becoming larger with rubber at a steel reinforcing index of 1.6.…”

Section: Analytical Studymentioning

confidence: 99%

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Experimental investigation into the properties of self‐compacting rubberised concrete incorporating polypropylene and steel fibers

Aslani

Gedeon

2018

Structural Concrete

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Adding a waste tyre rubber aggregate to the self-compacting concrete forms a new type of concrete call self-compacting rubberise concrete, which is used as a way of reducing waste and increasing sustainability in terms of the waste rubber, and changing the properties of the concrete to be more beneficial under certain circumstances and applications. In addition to adding rubber aggregates, polypropylene (PP) fibers and steel fibers are added into the concrete mix as well to create fiber reinforced self-compacting rubberised concrete (FRSCRC). This experimental investigation is using waste tyre rubber as a replacement for the aggregate in the FRSCRC. Using crumb rubber sizes of 2-5 mm, a replacement of 20% of fine aggregates was integrated. The amount of fibers varied depending on the type of fiber. In the case of PP fibers, 0.1, 0.15, 0.2, and 0.25% by total volume were tested, and for steel, 0.25, 0.5, 0.75, and 1% were tested. These mixes were tested for their fresh properties using the slump test and the J-ring test, and hardened properties including compressive strength, splitting tensile strength and compressive stress-strain tests. The results indicated that as more fiber is added, the larger the negative impact on the rheological properties of the FRSCRC and steel fibers having a much larger detrimental effect than PP fibers. In terms of mechanical properties, PP fibers reduced the compressive strength of the concrete as a higher percentage of fiber was added, but had no major effect on the splitting tensile strength. Steel fibers, on the other hand, showed a minor increase to compressive strength, as well as an increase to splitting tensile strength as more fibers were added.

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Section: Analytical Studysupporting

confidence: 65%

{f^{'}}_{cf} / {f^{'}}_{c} = 0.1863 normalR . normalI . + 0.9483,

…”

Section: Analytical Studymentioning

confidence: 79%

Section: Analytical Studymentioning

confidence: 99%

See 1 more Smart Citation

Experimental investigation into the properties of self‐compacting rubberised concrete incorporating polypropylene and steel fibers

Aslani

Gedeon

2018

Structural Concrete

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“…Based on the test data from this paper and previous research [22,23,30,32,33,43,[45][46][47][48], the relationship between the ratio of (f cu − f c0 )/f c0 and λ f and v N is shown in Figure 10, where f cu and f c0 are the cube compressive strength of SFNS-CRC and CRC and λ f is the characteristic coefficient of steel fibers. Although the experimental data look like dispersed, the ratio of (f cu − f c0 )/f c0 has an increasing tendency with the increasing λ f and v N , respectively.…”

Section: Compressive Strengthmentioning

confidence: 93%

Analysis and Prediction of Compressive Properties for Steel Fiber‐and‐Nanosilica‐Reinforced Crumb Rubber Concrete

Zhang

Wang

Kong

et al. 2020

Advances in Civil Engineering

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The disposal of waste tire rubber has gained more attention from the viewpoint of green, environmental protection, and sustainability. Numerous attempts have been stated on the properties of crumb rubber concrete (CRC) and observed that there is a large reduction of compressive strength and elastic modulus of CRC with the increase of the rubber substitution rate. Based on the CRC with the crumb rubber volume content of 5%, the steel fibers and nanosilica were added to CRC to make steel fiber-and-nanosilica-reinforced crumb rubber concrete (SFNS-CRC) in this paper. The effects of the steel fiber volume content and nanosilica content on the compressive properties of SFNS-CRC were studied, including compressive strength, elastic modulus, peak strain, compression toughness, and failure pattern. The test results indicated that the modulus of elasticity and compressive strength of SFNS-CRC have the increasing tendency with the addition of steel fibers and nanosilica. Moreover, the peak strains have a significant increase with the increase of the steel fiber content and nanosilica replacement ratio. The compressive stress-strain curves of SFNS-CRC gradually plump with the increase of the steel fibers and nanosilica. Finally, the prediction formulas for the compressive strength, elastic modulus, and peak strain of SFNS-CRC were set up. A simple predicted model of the stress-strain curve for SFNS-CRC was proposed, which considers the effect of steel fibers and nanosilica.

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“…The mechanical properties of rubberised concrete have therefore been investigated in many previous studies, with particular focus on the compressive strength properties [e.g. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. In order to use such modified concrete materials in structural applications there is, however, a need for a reliable characterisation of the bond interaction with the embedded reinforcement bars.…”

Section: Introductionmentioning

confidence: 99%

Bond-slip response of deformed bars in rubberised concrete

Bompa

Elghazouli

2017

Construction and Building Materials

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This paper is concerned with examining the complete bond-slip behaviour between deformed reinforcement bars and concrete incorporating rubber particles from recycled tyres as partial replacement for mineral aggregates. An experimental study consisting of fifty-four pull-out tests on cylindrical rubberised and normal concrete specimens, in conjunction with two reinforcement sizes with short embedment lengths, is described. In addition to a detailed assessment of the full bondslip relationship, the test results offer a direct interpretation of bond behaviour under practical levels of confinement and its influence on the failure modes. Particular emphasis is given to the characteristic bond behaviour of rubberised concrete in terms of maximum bond strength and splitting strength as well bond stiffness and slip parameters. The detailed test measurements and observations provided in this study enable the definition of key bond parameters depicting the interfacial behaviour between rubberised concrete and deformed bars. The findings also permit the development of modified approaches for reliable representation of the failure modes and bond capacities for the concrete materials considered in this investigation.

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Fresh and Hardened Properties of Fiber-Reinforced Rubber Concrete

Cited by 42 publications

References 11 publications

Experimental investigation into the properties of self‐compacting rubberised concrete incorporating polypropylene and steel fibers

Experimental investigation into the properties of self‐compacting rubberised concrete incorporating polypropylene and steel fibers

Analysis and Prediction of Compressive Properties for Steel Fiber‐and‐Nanosilica‐Reinforced Crumb Rubber Concrete

Bond-slip response of deformed bars in rubberised concrete

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