Directions for material recovery of used tires and their use in the production of new products intended for the industry of civil construction and pavements

Bulei, C; Todor, M P; Hepuţ, Teodor; Kiss, I

doi:10.1088/1757-899x/294/1/012064

Cited by 55 publications

(38 citation statements)

References 6 publications

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“…Considering all this, recycling of waste plastics in new applications is highly desirable and has a beneficial impact on the environment and the economy. Some other alternatives for the reuse of waste tires include their use as a fuel in cement kilns [6], to produce carbon black [7,8], in asphalt pavements [9] or as aggregates in concrete [2,3,10].…”

Section: Introductionmentioning

confidence: 99%

High yield and simple one-step production of carbon black nanoparticles from waste tires

Gómez-Hernández

Panecatl‐Bernal

Méndez‐Rojas

2019

Heliyon

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Carbon black (CB), a material consisting of finely divided particles, can be obtained by the partial combustion of heavy petroleum feedstock. The commercial preparation of CB nanoparticles require sophisticated equipment, chemical pre-treatment, and combination of complex separation and purification techniques. CB nanoparticles can also be recovered from scrubbed rubber, but yields are modest and the process is technically complex. Here, we report the development of a simple and inexpensive method for the preparation of CB nanoparticles from waste tires. Under optimal conditions, the yield of recovered CB nanoparticles (∼22 nm) was of approximately 81%; the nanomaterial presents good thermal stability and conductivity, and forms chain-like agglomerates; chemical composition analysis and solubility tests indicates that it is partly oxidized (C, 84.9%; S, 10.21%; O, 4.9%). The product was fully characterized by FTIR, Raman, TGA, BET, SEM and TEM. This preparation method could become a viable alternative to reduce the large amount of waste tires and decreasing their negative environmental impact, producing good quality CB nanoparticles useful for batteries, sensors, electronic devices, catalysis, pigments, concrete, and plastics, among many other applications.

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Section: Introductionmentioning

confidence: 99%

High yield and simple one-step production of carbon black nanoparticles from waste tires

Gómez-Hernández

Panecatl‐Bernal

Méndez‐Rojas

2019

Heliyon

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“…There are three main lines of action aimed at solving the problem of used tires: extension of service life through increased durability and retreading, material recycling, and energy recovery. A certain number of tires can also be used in full [22][23][24].…”

Section: The End Of Life Managementmentioning

confidence: 99%

“…For this purpose, the most frequently used methods are the ones involving product or material recycling. Whole, compressed, or cut worn tires have many applications, including their shape, material characteristics, and ability to absorb impacts or noise are used [22,25]. Used car tires can be also used by burning them in cement plants or other energy installations.…”

Section: The End Of Life Managementmentioning

confidence: 99%

LCA as a Tool for the Environmental Management of Car Tire Manufacturing

et al. 2020

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Car tire manufacturing can be the cause of numerous environmental hazards. Harmful emissions from the production process are an acute danger to human health as well as the environment. To mitigate these unwanted consequences, manufacturers employ the eco-balance analysis at the product designing and development stage, when formulating general development strategies, and increasingly when investigating the entire product lifecycle management process. Since the negative effects of products are considered in a broader range of implications, it has become necessary to extend the traditional scope of analytical interest onto the production, use, and end-of-life stages. This work investigates the manufacturing of passenger car tires executed with traditional and modern manufacturing technologies. The Life Cycle Assessment (LCA) of tires reported in this study involved three LCA methods: Eco-Indicator 99, Cumulative Energy Demand (CED) and the scientific assessment methods developed by the Intergovernmental Panel on Climate Change, Global Warming Potential (IPCC). LCA as a tool for environmental analysis can be carried out for the entire life cycle or its individual phases. The implementation of the work made it possible to demonstrate that as a result of the identification of the main sources of negative impacts, it is possible to propose ways to minimize these impacts in the car tire manufacturing process. The results indicate that the most damaging impact is the depletion of natural resources, which play a key role in the production process of car tires.

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“…Tires are made of flexible rubber material whose construction is reinforced with textile and metal materials. Figure 1 shows the percentage composition of tires used for passenger and freight transport [12,13].…”

Section: Geoscience Engineeringmentioning

confidence: 99%

The Properties of Recycled Rubber From Waste Tires in the Production of Cement Composites

Svoboda¹,

Václavík²,

Dvorský³

et al. 2020

GSE

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This article presents the results of a study dealing with the use of a combination of recycled rubber from waste tires as a 100% substitute in the production of cement composites. Aggregate was replaced with recycled rubber in two ratios, namely the ratio of 50/50 and the ratio of 40/60 of the share of fraction 0/1 mm and fraction 1/3 mm. The designed formulas of cement composites were subjected to the tests of their physical and mechanical properties in order to determine the properties of the used recycled rubber combination. The tests included the consistency of the grain curve, mixing water properties, consistency of cement mortar, and strength characteristics (tensile flexural strength and compressive strength). The study presents results that are fundamentally different from the comparative samples and their use in the building industry; however, at the same time, they open up new possibilities of their utilization as a building material.The consistency of fresh mortar was determined by means of a diffusion test carried out according to ČSN EN 1015-3 [18] using a flow table. Determination of tensile flexural strength and compressive strengthThe determination of tensile flexural and compressive strengths was performed after 3, 7 and 28 days of age of the test specimens according to . The testing was carried out using the prepared test specimens with the dimensions of 40x40x160 mm, which were stored in a water bath prior to the test. Formtest instrument with a compressive force of 100KN and 300KN was used as the testing equipment. Determination of hardened mortar densityThe test specimens prepared according to formulas Z2 and Z3 were dried to a stable weight and subsequently tested to determine the density of hardened mortar according to ČSN EN 1015-10 standard [20]. RESULTS AND DISCUSSION Determination of grain-size curve of recycled rubberSieves with mesh sizes of 0.063, 0.125, 0.25, 0.5, 1.0, 1.6, 2.0, 2.5, 3.0, 4.0, and 5.0 mm were used to determine the grain-size curve of rubber granulate with the fractions of 0/1 and 1/3 mm. The resulting grain-size curves are shown in Figure 2. by using admixtures (e.g. plasticizers). At the same time, these results open up new possibilities for the utilization of this material as an environmentally friendly building material. The modifications of this cement compound and further testing of its physical and mechanical properties will be the subject of further research.

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Directions for material recovery of used tires and their use in the production of new products intended for the industry of civil construction and pavements

Cited by 55 publications

References 6 publications

High yield and simple one-step production of carbon black nanoparticles from waste tires

High yield and simple one-step production of carbon black nanoparticles from waste tires

LCA as a Tool for the Environmental Management of Car Tire Manufacturing

The Properties of Recycled Rubber From Waste Tires in the Production of Cement Composites

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