Utilization of waste tire rubber powder in concrete

Liu, Rixin; Zhang, Lei

doi:10.1080/09276440.2015.1065619

Cited by 42 publications

(13 citation statements)

References 34 publications

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“…Figure 1 (a) shows the crumb 186 rubber used in this investigation. Pre-treatment of the rubber crumb was carried out in this 187 research based on the recommendations of Segre and Joekes (2000); Segre et al (2002); Chou et al (2007); Liu and Zhang (2015); Mohammadi et al (2016); Guo et al (2017;Zukri et al (2017) by submerging crumb rubber for 30 minutes in "1 N NaOH" solution (one mole concentration of sodium hydroxide solution) at room temperature. After treatment with the NaOH solution, the rubber particles were washed with potable water for a period of 5 minutes until the pH of the washing water became neutral.…”

Section: Crumb Rubber and Treatmentmentioning

confidence: 99%

“…Treatment of crumb rubber with sodium hydroxide (NaOH) solution has been widely used to increase the bond between cement and rubber resulting in increased strength (Segre and Joekes, 2000;Chou et al, 2007;Liu and Zhang, 2015;Guo et al, 2017). Segre et al, (2002) and Mohammadi et al, (2016) suggested that NaOH treatment converts the zinc stearate compound which was used in tyre manufacturing to a soluble form of sodium stearate which can be removed by washing with water.…”

Section: Introduction 79mentioning

confidence: 99%

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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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Section: Crumb Rubber and Treatmentmentioning

confidence: 99%

Section: Introduction 79mentioning

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 addition of waste tire products to concrete has the following effects on the hardened properties of concrete: decrease in compressive strength with the increase in rubber concentrations; mixtures with smaller rubber particles typically have lower reductions in compressive strength than mixtures with larger rubber particles; flexural strength and tensile strength, like compressive strength, typically decrease with increase in rubber concentrations, but at a slower rate of reduction; Modulus of elasticity (MOE) typically decreases with increase in rubber concentration, with dynamic MOE demonstrating a decreased reduction compared with static MOE; and improved toughness and impact resistance with increase in rubber concentrations up to 25% [3,4,7,[17][18][19][20][21]26,27].…”

Section: Literature Reviewmentioning

confidence: 99%

Investigation into Recycled Rubber Aggregates and Steel Wire Fiber for Use in Concrete Subjected to Impact Loading

et al. 2020

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This study investigated the potential use of tire derived rubber aggregates, particularly powdered rubber, and recycled steel-wire fibers in concrete subjected to impact loading. The fibers are approximately 0.4 mm in average diameter and 25 mm in length on average. There are two main portions to this study. The first phase of this study involved small-scale batching to investigate the fresh and hardened properties of concrete mixtures with powdered rubber up to 50% replacement of sand volume and recycled steel fibers up to 0.25% by mixture volume. Additional mixtures containing powdered rubber, crumb rubber, and tire chips were evaluated for their mechanical performance. Based on fresh concrete properties, compressive strength, modulus of rigidity, and impact resilience, mixtures were selected for a second investigative phase. In this phase, static and impact testing were performed on two sets of scaled beams. One beam set was produced with concrete containing 40% powdered rubber as a sand replacement and another beam set with a combination mixture incorporating rubber products of varying sizes (10% powdered rubber, 10% crumb rubber, and 10% tire chip) and 0.25% recycled steel fiber. Flexural performance improved initially with the inclusion of powdered rubber but decreased with increasing concentrations. Mixtures including recycled steel fibers at 0.25% outperformed industrial steel fiber mixtures in both flexural strength and impact resistance. For both the static and impact beams with the recycled powdered rubber and steel fibers in the combination demonstrated improved load distribution and load-carrying capacity, acting as a sufficient replacement for industrial steel fiber reinforcement.

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“…This leads to several kinds of research to mitigate the strength loss in concrete when crumb rubber is used to replace aggregate partially. In some studies, the crumb rubber was first pre-treated in NaOH solution to make its surface rougher, leading to improvement in the bonding between rubber particles and cement paste, while in another study, cement replacement materials were used to improve strength, reduce porosity and densify the microstructure [14,15,[23][24][25][26]. The most recent attempt is the use of nanosilica as cement addition due to its physical properties, pozzolanic reactions and filling ability.…”

Section: Introductionmentioning

confidence: 99%

Investigating the properties of roller-compacted rubberized concrete modified with nanosilica using response surface methodology

Adamu

Haruna

Ibrahim

et al. 2021

Innov. Infrastruct. Solut.

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Globally there is continuous rapid production of waste tires due to an increase in vehicle usage, which is becoming a serious environmental issue as its disposal and reuse affect sustainability negatively. With concrete being the most commonly available man-made construction material, there is a serious concern over the sustainability of natural resources mostly aggregate. One of the ways to address problems related to waste tire disposal and sustainability of natural material is by incorporating the waste tires in concrete production. In this paper, the effect of crumb rubber (CR) particles partially replacing the natural sand at 0 to 30% interval of 10%, modified with nanosilica (NS) added at 0%, 2% and 3% by weight of cement in roller-compacted concrete (RCC) was investigated. Moreover, response surface methodology (RSM) was employed to develop a model for predicting fresh density, Vebe time and compressive strengths. The result showed that 2%NS is effective in mitigating strength loss in concrete containing crumb rubber up to 10%. The addition of 2% NS to RCC with 10% CR improved its strength by 10.3%, 12.7% and 27.4% at 3 days, 7 days and 28 days, respectively. The RSM models developed were significant, and there is a good correlation between the observed values and the predicted variables. Finally, the 28-day compressive strength of RCC incorporated with CR and NS was predicted based on its 3-day and 7-day compressive strengths.

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Utilization of waste tire rubber powder in concrete

Cited by 42 publications

References 34 publications

Mechanical Properties and Air Permeability of Concrete Containing Waste Tires Extracts

Mechanical Properties and Air Permeability of Concrete Containing Waste Tires Extracts

Investigation into Recycled Rubber Aggregates and Steel Wire Fiber for Use in Concrete Subjected to Impact Loading

Investigating the properties of roller-compacted rubberized concrete modified with nanosilica using response surface methodology

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