Evaluating Properties of Asphalt Mixtures Containing polymers of Styrene Butadiene Rubber (SBR) and recycled Polyethylene Terephthalate (rPET) against Failures Caused by Rutting, Moisture and Fatigue

Ameri, Mahmoud; Mohammadi, Robab; Mousavinezhad, Milad; Ameri, Amirhossein; Shaker, Hamid; Fasihpour, Arash

doi:10.3221/igf-esis.53.15

Cited by 14 publications

(3 citation statements)

References 19 publications

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“…[38] Wrapping aggregates with PET particles during the dry process in which PETs are mixed with hot aggregates improves the adhesion forces at the bitumen-aggregate interface. [39][40][41] Many studies have acknowledged that the optimum dosage of PET must be determined to have more efficacy at improving bitumen's properties. The addition of 12% PET by weight of bitumen increased the asphalt's service life by about three times and saved ≈20% of the asphalt layer's thickness.…”

Section: Introductionmentioning

confidence: 99%

Bio‐Carbon as a Means of Carbon Management in Roads

Pahlavan

Aldagari

Park

et al. 2023

Advanced Sustainable Systems

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This paper introduces biocarbon, referred to as biochar, as a novel eco‐friendly and cost‐effective additive to increase interactions among bitumen components while facilitating carbon management in roadway infrastructures. It is hypothesized that functional groups on biochar surfaces enhance interactions between biochar and bitumen constituents. This in turn enhances mechanical properties and durability of asphalt pavements. This study uses biochars derived from six different types of woody biomass and one type of algae, and polyethylene terephthalate granules as a carrier to introduce biochar to bitumen. Quantum‐based molecular modeling and noncovalent interaction analysis show that algal biochar interacts more effectively with bitumen components. The enhanced interaction of algal biochar is attributed to its surface functional groups including reactive nitrogen‐ and oxygen‐carrying functional groups. The rheological characterization of bitumen doped with different biochars confirms that the lowest separation index occurs for bitumen containing algal biochar, which also exhibits the highest percent of elastic recovery and resistance to permanent deformation. The study suggests that asphalt pavement durability can be enhanced by selection of the proper biochar to increase intermolecular interactions. Promising results for the algae biochar promote its use in carbon management for roadway infrastructure by sequestering CO2 from air through photosynthesis of algae biomass.

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Section: Introductionmentioning

confidence: 99%

Bio‐Carbon as a Means of Carbon Management in Roads

Pahlavan

Aldagari

Park

et al. 2023

Advanced Sustainable Systems

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“…Over the years, researchers have tried to improve the properties of bitumen with a variety of additives, which can be generally classifed into four groups: polymer-based materials, nanomaterials, recycled materials, and biological materials [8][9][10][11]. Some researchers have used a class of materials called lignin to improve the properties of bitumen and the resulting mixtures.…”

Section: Introductionmentioning

confidence: 99%

Optimization of CLS Content of Asphalt Mixtures Based on Balanced Mix Design Approach

Ziaee

Fatemi

Shaker

et al. 2023

Advances in Civil Engineering

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Over the years, there have been many studies on the performance improvement of asphalt mixtures using different materials and additives, especially those of the recycled variety, because of the environmental benefits they bring to the design. This study investigated the properties of asphalt mixtures made with different amounts of calcium lignosulfonate (CLS), which is a waste product, and used the Balanced Mix Design (BMD) approach to determine the appropriate mix design for CLS-containing mixtures. In this process, the results of the dynamic creep test were used as a measure of rutting resistance, the results of the indirect tensile test were used as a measure of moisture susceptibility, and the results of the Illinois Flexibility Index Test (IFIT) and Indirect Tensile Cracking Test (IDEAL-CT) were used independently as a measure of cracking resistance. On the other hand, since previous studies have suggested that CLS has antiaging properties, the specimens were made and tested in two groups: those with long-term aging and without long-term aging. So the objective was to determine the amount of CLS that should ideally be used as a bitumen additive in aged and unaged asphalt mixtures. The results showed that using 15% or 20% CLS will always yield acceptable outcomes in terms of BMD criteria for both aged and unaged conditions. However, a CLS content of 10% may also be acceptable for both aged and unaged conditions if IDEAL-CT results are used as the measure of cracking resistance.

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“…This modification of bitumen is done exclusively using polymers, which are macromolecules synthesized through a chemical reaction between smaller molecules (monomers) to form long chains. The physical properties of the resulting polymer are determined by the chemical structure of the monomers and by their sequence inside the polymer [22,23]. Currently, the growing development and use of polymer materials in construction roads are observed [24,25].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of rheological performance of a local modified bitumen by Styrene Butadiene Styrene polymer used in wearing course

Kebaili

Boucherba²,

Djouhri

et al. 2021

Frattura Ed Integrità Strutturale

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In road construction, bitumen is the binder that gathered the different aggregates of road pavements. Bitumen, as a viscoelastic material, influences considerably the rheological behavior of bitumen concrete. The bitumen used in Algeria, showed its limits face to the traffic, which is increasing continuously. This research aims to valorize SBS polymer in wearing course by modifying a pure 35/50 bitumen. The present paper aims to study the polymer derived from styrene and butadiene (SBS) from the company Kraton Polymers International Ltd in the modification of a bitumen to improve its mechanical characteristics.To this end, the incorporation of SBS polymer was carried out according to two contents: 5.0 and 7.5% (by weight of asphalt), the objective being to evaluate the influence of this type of polymer on the rheological properties of the bitumen ordinary road including viscosity and modulus.The results reveal that the bitumen modified with 7.5% of SBS has better mechanical performance on the rigidity and the elasticity compared to the conventional bitumen. Recommendations have been made to implement a bitumen modification system to improve its quality and therefore the durability of bituminous pavements in the south of Algeria.

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Evaluating Properties of Asphalt Mixtures Containing polymers of Styrene Butadiene Rubber (SBR) and recycled Polyethylene Terephthalate (rPET) against Failures Caused by Rutting, Moisture and Fatigue

Cited by 14 publications

References 19 publications

Bio‐Carbon as a Means of Carbon Management in Roads

Bio‐Carbon as a Means of Carbon Management in Roads

Optimization of CLS Content of Asphalt Mixtures Based on Balanced Mix Design Approach

Evaluation of rheological performance of a local modified bitumen by Styrene Butadiene Styrene polymer used in wearing course

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