Potential use of waste tire rubber as aggregate in cement concrete – A comprehensive review

Li, Yang; Zhang, Shuai; Wang, Ruijun; Dang, Faning

doi:10.1016/j.conbuildmat.2019.07.198

Cited by 136 publications

(44 citation statements)

References 89 publications

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“…Crumb rubber is proven to have lower strength, water absorption, and stiffness [ 9 , 10 ]. According to Siad et al [ 11 ], it was found that coarse rubber sand significantly increases the deflection capacity of ECC mixtures at the optimum content of 20%.…”

Section: Introductionmentioning

confidence: 99%

Deformation Properties of Rubberized ECC Incorporating Nano Graphene Using Response Surface Methodology

et al. 2020

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Engineered cementitious composite (ECC) was discovered as a new substitute of conventional concrete as it provides better results in terms of tensile strain, reaching beyond 3%. From then, more studies were done to partially replace crumb rubber with sand to achieve a more sustainable and eco-friendlier composite from the original ECC. However, the elastic modulus of ECC was noticeably degraded. This could bring potential unseen dangerous consequences as the fatigue might happen at any time without any sign. The replacement of crumb rubber was then found to not only bring a more sustainable and eco-friendlier result but also increase the ductility and the durability of the composite, with lighter specific gravity compared to conventional concrete. This study investigated the effects of crumb rubber (CR) and graphene oxide (GO) toward the deformable properties of rubberized ECC, including the compressive strength, elastic modulus, Poisson’s ratio, and drying shrinkage. Central composite design (CCD) was utilized to provide 13 reasonable trial mixtures with the ranging level of CR replacement from 0–30% and that of GO from 0.01–0.08%. The results show that GO increased the strength of the developed GO-RECC. It was also found that the addition of CR and GO to ECC brought a notable improvement in mechanical and deformable properties. The predicted model that was developed using response surface methodology (RSM) shows that the variables (compression strength, elastic modulus, Poisson’s ratio, and drying shrinkage) rely on the independent (CR and GO) variables and are highly correlated.

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Section: Introductionmentioning

confidence: 99%

Deformation Properties of Rubberized ECC Incorporating Nano Graphene Using Response Surface Methodology

et al. 2020

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“…The results in this study show that concrete mixes with crumb rubber and steel fibres extracted from waste tyres may not be suitable for tension applications under high temperature. Similarly, Li et al, (2019) reported that rubberized concrete could improve the thermal insulation of building enclosures saving energy and reduce CO2 emissions, but was unsuitable for elevated temperature applications in tension.…”

Section: Effect Of Heating On Tensile Strengthmentioning

confidence: 99%

Mechanical Properties and Air Permeability of Concrete Containing Waste Tires Extracts

Shaaban

Rizzuto

El-Nemr

et al. 2021

J. Mater. Civ. Eng.

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The safe disposal of waste tyres has been seen as having a negative impact on the environment. To mitigate this impact, the components of waste tyres can be used in the production of green concrete. This study explores the effects of the curing and drying regime on the mechanical properties and permeation characteristics of concrete containing both crumbed rubber and steel fibres that are removed from waste tyres. Five concrete mixes were designed and concrete cubes, cylinders, and prisms were cast using waste tyres extracts. Crumb rubber was treated by submersion in sodium hydroxide and then used to partially replace 10% and 30% of fine aggregates in the concrete mix. Extracted steel fibres were added at the rate of 1% and 2% per volume of each mix. Compressive, indirect splitting tensile as well as flexural strengths were conducted after normal curing while observing several drying conditions. Additionally, air permeability was assessed using a portable apparatus which was developed to assess permeability easily. For the concrete test specimens containing 10% partial replacement of fine aggregate by crumb rubber and 1% steel fibres, it was discovered that the splitting tensile strength and flexural strength were higher than that of the control mix by 21% and 22.6%, respectively. For specimens, that included the 10% crumb rubber and 1% steel fibres, when exposed to oven drying at 105°C for 12 hours, the compressive strength results increased by 17% compared to the control specimens exposed to the same conditions. Unlike the compressive strength results, the splitting tensile and flexural strength results decreased after exposing the specimens to elevated temperature. The addition of crumb rubber and steel fibres as a partial fine aggregate replacement resulted in increasing the air permeability of the concrete to different degrees depending on the percentages used. The oven drying curing regime improved the permeability by reducing it in specimens containing the 10% crumb rubber and 1% steel fibres as indicated by increasing their permeability time index by 15% when compared to air-dried specimens. Using waste tyre extracts as a partial replacement of concrete fine aggregate can be recommended for both indoor and outdoor applications. This study showed that this was a viable, economic and environmentally friendly method for reducing carbon footprint.

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“…WCR has been widely used in road engineering for its high toughness and antiaging properties. e application of WCR in ordinary concrete shows that WCR can effectively improve the deformation property, F-T resistance, toughness, vibration, and noise reduction performance of concrete, but it has a negative impact on its strength [24][25][26][27][28]. SF, as a byproduct of the smelting industry with abundant silica, is an excellent cement-based modified material and has a broad application prospect in cement concrete [29,30].…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Waste Crumb Rubber/Silica Fume Composite Modified Pervious Concrete in Seasonal Frozen Regions

Luo

Zhao

Zhang³

et al. 2021

Advances in Materials Science and Engineering

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The waste crumb rubber (WCR) and silica fume (SF), as industrial waste and byproduct, are widely used as additives in road construction materials, which can not only realize waste utilization and protect the environment but also reduce the consumption of building material resources. At present, most of the research has focused on the properties of concrete modified only by WCR or SF; there are few studies concentrated on composite modified concrete by the two, especially the study on pervious concrete (PC). This article aims to study the mechanical strength, deformability, and freeze-thaw (F-T) resistance of waste crumb rubber/silica fume composite modified pervious concrete (RSFPC). The RSFPC and control specimens were manufactured in the lab. The experiments of compressive strength, flexural strength, flexural failure strain, flexural elastic modulus, and F-T cycles were conducted. In addition, the properties of RSFPC were compared with WCR and SF single modification PC. The results indicate that the composite modification of WCR and SF can give full play to the advantages of the two materials so that the strength property and elastic modulus of PC will not be decreased and the F-T resistance and deformability can be greatly improved. Compared to a single modification group by WCR or SF, RSFPC has a more balanced and comprehensive performance, which will greatly expand the application of PC.

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Potential use of waste tire rubber as aggregate in cement concrete – A comprehensive review

Cited by 136 publications

References 89 publications

Deformation Properties of Rubberized ECC Incorporating Nano Graphene Using Response Surface Methodology

Deformation Properties of Rubberized ECC Incorporating Nano Graphene Using Response Surface Methodology

Mechanical Properties and Air Permeability of Concrete Containing Waste Tires Extracts

Performance Evaluation of Waste Crumb Rubber/Silica Fume Composite Modified Pervious Concrete in Seasonal Frozen Regions

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