Experimental investigation and analytical prediction of flexural behaviour of reinforced concrete beams with steel fibres extracted from waste tyres

Yıldızel, Sadık Alper; Özkılıç, Yasin Onuralp; Bahrami, Alireza; Aksoylu, Ceyhun; Başaran, Boğaçhan; Hakamy, A.; Arslan, Musa Hakan

doi:10.1016/j.cscm.2023.e02227

Cited by 13 publications

(4 citation statements)

References 78 publications

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“…Several researchers developed numerous strategies for enhancing and assessing several significant aspects of the behavior of RC beams [4]. However, most of these methods are centered on additives [8][9][10][11][12], partial or complete replacement of basic concrete materials [6], [13][14][15][16][17][18][19][20][21], recycling materials [22][23][24], or research on the size impact of RC beams [5]. On the other hand, modifying the configurations of the typical shear reinforcement of RC beams in terms of inclination and geometry is a new challenge and promising technique for improving RC beam strength [14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Finite Element Simulation and Analysis of RC Beams with Modified Stirrups

Bello,

Dela Cruz

2024

MATEC Web Conf.

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This paper uses the finite element simulation to examine the effects of modified stirrups on RC beams. There are seventeen (17) FE models, including various stirrup configurations such as traditional, spiral, and truss systems, as well as advanced modifications, were thoroughly analyzed using Abaqus software to evaluate parameters such as loaddeflection relationship, ductility, strength, failure modes, and crack patterns. Among these models, the BT-X design with a 125 mm spacing inclination of 72.10° demonstrated a remarkable load capacity of 110.856 kN, outperforming BN by 7.637%. Notably, throughout the simulation, the BT-R and BT-X designs were shown to be effective at increasing load-carrying capacity. Stirrup spacing and inclination angles are essential influences on RC beam performance. Specifically, the BT-X 125 design significantly improved flexural capacity and ductility. Furthermore, a uniform failure mode was identified across all models, highlighting the positive effect of modified stirrups on RC beam behavior. These findings highlight the importance of changing the stirrup design and selecting spacing and inclinations to improve RC beam performance.

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Section: Introductionmentioning

confidence: 99%

Finite Element Simulation and Analysis of RC Beams with Modified Stirrups

Bello,

Dela Cruz

2024

MATEC Web Conf.

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“…Furthermore, new methods have been employed to enhance the sustainability of concrete [16][17][18][19][20]. One of these methods is the application of waste materials as a replacement for aggregate or cement [21][22][23][24][25][26][27][28][29][30]. The use of waste materials as a replacement for aggregate significantly reduces the utilization of raw materials [31][32][33][34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Influence of pozzolanic addition on strength and microstructure of metakaolin-based concrete

Bansal,

Bahrami

et al. 2024

PLoS ONE

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The intent of this study is to explore the physical properties and long-term performance of concrete made with metakaolin (MK) as a binder, using microsilica (MS) and nanosilica (NS) as substitutes for a portion of the ordinary Portland cement (OPC) content. The dosage of MS was varied from 5% to 15% for OPC-MK-MS blends, and the dosage of NS was varied from 0.5% to 1.5% for OPC-MK-NS blends. Incorporation of these pozzolans accelerated the hardening process and reduced the flowability, consistency, and setting time of the cement paste. In addition, it produced a denser matrix, improving the strength of the concrete matrix, as confirmed by scanning electron microscopy and X-ray diffraction analysis. The use of MS enhanced the strength by 10.37%, and the utilization of NS increased the strength by 11.48% at 28 days. It also reduced the penetrability of the matrix with a maximum reduction in the water absorption (35.82%) and improved the resistance to the sulfate attack for specimens containing 1% NS in the presence of 10% MK. Based on these results, NS in the presence of MK can be used to obtain cementitious structures with the enhanced strength and durability.

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“…In addition, waste tire rubber is also widely used in the construction field [6,7]. For example, Yıldızel et al [8] mixed waste steel wire (RWSWs) recovered from waste rubber tires into concrete for newly designed reinforced concrete buildings to improve the performance of building components. Zeybek et al [9] extracted steel fibers from waste tires to prepare fiber-reinforced concrete for improving the mechanical properties of concrete.…”

Section: Introductionmentioning

confidence: 99%

Innovative Use of Waste PET-Derived Additive to Enhance Application Potentials of Recycled Concrete Aggregates in Asphalt Rubber

Chen,

Peng,

Yang

et al. 2023

Polymers

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Polyethylene terephthalate (PET) drinking bottles, rubber tires, and concrete are the very common municipal solid wastes, which are usually disposed of at landfills and stockpiles and cause continuous damage to the environment. Some studies have indicated that waste PET can be chemically converted into an additive for improving the overall properties of asphalt pavement incorporating natural aggregates, especially the moisture-induced damage resistance. However, it is not clear whether this PET additive still works for asphalt rubber containing recycled concrete aggregates (RCA). To well reveal this issue, this study first adopted a similar way to chemically recycle waste PET into the additive for modifying crumb rubber modified asphalt (CRMA) binder and then mixed the binder with the 13 mm maximum aggregate stone matrix asphalt containing 100% coarse RCA for preparing the mixtures. After a series of physicochemical characterizations of the PET additive, the moisture resistance, rutting resistance, low-temperature cracking resistance, and fatigue resistance of the mixture were systematically evaluated. The results showed that the PET additive is capable of improving the resistance to moisture and high-temperature deformation of asphalt rubber and helps greatly reduce the moisture-induced damage to the interfacial bonding layer. To be more detailed, the residual Marshall stability (RMS) value of RCA-CRMAM/1PET after 72 h of immersion is higher than 85% by contrast to that of RCA-CRMAM (77.1%), while the tensile strength ratio (TSR) value of RCA-CRMAM/1PET shows more than 80% compared to that of 65.2%. In addition, only 1% PET additive can enhance the high-temperature resistance of asphalt rubber containing RCA to rut and allow it to maintain higher resistance to rut after moisture-induced damage. 1% PET additive can help improve the bearing capacity of RCA-CRMAM under a low-temperature environment and delay its fatigue life at small stresses. Generally, with the successful introduction of PET additives to asphalt rubber containing RCA, more durable and sustainable highway pavement can be produced and applied in practice to alleviate the negative impacts caused by waste PET, waste tire rubber, and waste concrete.

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Experimental investigation and analytical prediction of flexural behaviour of reinforced concrete beams with steel fibres extracted from waste tyres

Cited by 13 publications

References 78 publications

Finite Element Simulation and Analysis of RC Beams with Modified Stirrups

Finite Element Simulation and Analysis of RC Beams with Modified Stirrups

Influence of pozzolanic addition on strength and microstructure of metakaolin-based concrete

Innovative Use of Waste PET-Derived Additive to Enhance Application Potentials of Recycled Concrete Aggregates in Asphalt Rubber

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