Laboratory Evaluation of Asphalt Binders Containing Styrene-Butadiene-Styrene (SBS) and Processed Oil

Hemmati, Navid; Vigneswaran, Shyaamkrishnan; Kim, Hyun Hwan; Lee, Moon-Sup; Lee, Soon-Jae

doi:10.3390/ma16031235

Cited by 7 publications

(3 citation statements)

References 16 publications

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“…where V t is the settling velocity of dispersed particles, a is the radius of dispersed particles, ∆ρg is the density difference between two different phases, g is gravitational acceleration, and η is the dynamic viscosity of liquid medium [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Effect of Kaolinite and Cloisite Na+ on Storage Stability of Rubberized Binders

et al. 2023

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This study aimed to evaluate the impact of a two-step modification process involving kaolinite and cloisite Na+ on the storage stability of rubberized binders. The process involved the manual combination of virgin binder PG 64-22 with crumb rubber modifier (CRM), which was heated to condition it. The preconditioned rubberized binder was then modified for two hours at a high speed of 8000 rpm using wet mixing. The second stage modification was performed in two parts, with part 1 using only crumb rubber as the modifier and part 2 involving the use of kaolinite and montmorillonite nano clays at a replacement percentage of 3% to the original weight of the binder along with the crumb rubber modifier. The Superpave and multiple shear creep recovery (MSCR) test methods were used to calculate the performance characteristics and separation index % of each modified binder. The results showed that the viscosity properties of kaolinite and montmorillonite improved the performance class of the binder, with montmorillonite demonstrating greater viscosity values than kaolinite even at high temperatures. Additionally, kaolinite with rubberized binders showed higher resistance to rutting, and the % recovery value from multiple shear creep recovery testing indicated that kaolinite with rubberized binders was more effective than montmorillonite with rubberized binders, even at higher load cycles. The use of kaolinite and montmorillonite reduced phase separation between the asphaltene phase and rubber-rich phase at higher temperatures, but the performance of the rubber binder was affected by higher temperatures. Overall, kaolinite with the rubber binder generally demonstrated greater binder performance.

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Section: Introductionmentioning

confidence: 99%

Effect of Kaolinite and Cloisite Na+ on Storage Stability of Rubberized Binders

et al. 2023

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“…On the construction site, workability and handling of modified asphalt should be considered due to its higher viscosity and high melting temperature [7]. The asphalt industry commonly employs several modifiers, including Styrene-Butadiene-Styrene (SBS), Styrene-Butadiene-Rubber (SBR), Crumbed Rubber Modifier (CRM), Polyethylene (PE), and Styrene-Isoprene-Styrene (SIS) [8]. The presence of these modifiers enriches the viscosity; this means an improvement will be achieved in rutting resistance, but it causes difficulties in workability and pumping during the construction of asphalt pavements [9].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Sustainable Asphalt Binders Modified with Styrene–Isoprene–Styrene (SIS) and Processed Oil

et al. 2023

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The current study aims to evaluate the viscosity and rheological properties of PG 64-22 modified with Styrene–Isoprene–Styrene (SIS) and Processed Oil (PO) to enhance asphalt binder properties. Performance properties were measured at high, intermediate, and low temperatures. PG 64-22 was blended with SIS and Processed Oil at three levels (5%, 10%, and 15% by weight of binder) and two concentrations (6% and 12% by weight of binder), respectively. Modified binders underwent two short and long artificial aging processes, through the spinning of the thin film in an RTFO oven and a pressure aging vessel (PAV). The Superpave binder evaluations were carried out using a rotational viscometer (RV), dynamic shear rheometer (DSR), and bending beam rheometer (BBR). According to the findings of the research, the addition of SIS caused higher values of viscosity, but when co-modified with processed oil, there was a substantial decrease in viscosity values. As a result, workability was improved. (1) It was observed that a greater reduction in viscosity was achieved when the processed oil was present at a higher concentration at 135 °C compared to a lower concentration. (2) The study showed that the incorporation of processed oil led to a reduction in rutting performance of the asphalt binder. However, the addition of SIS resulted in a notable enhancement of rutting resistance. (3) The role of processed oil as co-modifier at concentrations of 6% and 12% caused significant decreases in G*sin δ, based on the susceptibility of asphalt molecules to accept oil molecules in their network links. (4) The extracted measurements from the BBR tests indicated that modification with SIS and PO improved the low-temperature cracking resistance significantly. Comparison of asphalt binders modified with 6% and 12% PO and the same SIS content showed significant changes in modification with 12% PO rather than 6%.

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“…There are usually two ways to increase the modulus of asphalt binder: one is to use asphalt with a lower penetration grade, such as 50# or 30# matrix asphalt binder, and the second is to add modified substances in the asphalt binder, such as SBS modifier and various high modulus agents [21]. Styrene-butadiene-styrene (SBS), as a copolymer, is often used as a modifier for asphalt binders to improve the bonding properties of the binder [22]. SBS modifiers can form a cross-linked network that improves the flexibility, elasticity, and durability of the binder; this allows the asphalt to better resist cracking, rutting, and other forms of damage, thereby extending the life of the pavement [23].…”

Section: Introductionmentioning

confidence: 99%

Performance Zoning of Asphalt Pavement and Performance Grade (PG) of Asphalt Binder in Karamay: A Case Study of Xinjiang, China

Dong

Feng

2023

Sustainability

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Asphalt binder is a temperature-sensitive material with a performance that is greatly affected by changing climates. Improper selection of asphalt will cause a lot of damage and affect the durability of the road. The establishment of asphalt pavement performance zoning in Xinjiang, a vast area with great temperature differences, will provide a reference for the selection of asphalt suitability, the refinement of pavement design, and the sustainable development of road engineering. In this study, 11 years of temperature data in the Xinjiang region have been collected and analyzed, and 98% reliability of pavement design temperature has been used to draw a performance grading map of asphalt pavement in the Xinjiang region based on the ArcGIS platform. Finally, the Xinjiang region is divided into nine performance zones. At the same time, the performance grades (PG) of five kinds of asphalt binders in Karamay are explored. The result shows that there is little difference in continuous PG span between different matrix asphalt binders; the lower the penetration grade, the better the high-temperature performance, and the worse the low-temperature performance. After adding the SBS modifier, the continuous PG span can be about 20 °C higher than the matrix asphalt. The indoor test of asphalt mixture also shows that SBS-modified asphalt has better durability. All these provide the basis for a reasonable selection of asphalt binders in different areas of Xinjiang.

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Laboratory Evaluation of Asphalt Binders Containing Styrene-Butadiene-Styrene (SBS) and Processed Oil

Cited by 7 publications

References 16 publications

Effect of Kaolinite and Cloisite Na+ on Storage Stability of Rubberized Binders

Effect of Kaolinite and Cloisite Na+ on Storage Stability of Rubberized Binders

Characterization of Sustainable Asphalt Binders Modified with Styrene–Isoprene–Styrene (SIS) and Processed Oil

Performance Zoning of Asphalt Pavement and Performance Grade (PG) of Asphalt Binder in Karamay: A Case Study of Xinjiang, China

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