Effect of blending protocol on the performance of SBS/sulfur/soybean-derived additive composite modified hard asphalt

Chen, Conglin; Williams, R. Christopher; Podolsky, Joseph H.; Hohmann, Austin; Cochran, Eric W.

doi:10.1080/10298436.2019.1698741

Cited by 19 publications

(3 citation statements)

References 35 publications

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“…After 200 h UV, the doublet moves closer together (from 617/577 cm −1 to 595/580 cm −1 ) suggesting a change in chemical identity with aging. Sulfonates (6) and sulfates (7) exhibit bands due to deformation vibrations in the range of the 617/577 cm −1 doublet, 45 but the absence of characteristic SO 2 stretching bands at 1420−1330 cm −1 and 1200−1145 cm −1 in Figure 1. ATR-FTIR spectra of rubber-modified bitumen (a) control, (b) mixed with 3% elemental sulfur.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Elemental sulfur has been studied as a bitumen modifier for several decades either as a rubber compatibilizer − or in significant fractions (20–50%) as a bitumen extender, ,− to reduce material cost and crude oil consumption. Smaller amounts of added elemental sulfur (<15%) tend to plasticize bitumen and improve low-temperature performance; higher amounts lead to stiffening, partly because undissolved sulfur acts as a reinforcing filler. − Studies on sulfur-extended asphalt (SEA) compared to conventional bitumen show an increase in stiffness and rutting resistance and mixed results in fatigue and susceptibility to moisture damage. ,− …”

Section: Introductionmentioning

confidence: 99%

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Effects of Elemental Sulfur on the Aging Trajectory and Adhesion Characteristics of Rubber-Modified Bitumen

Hung

Fini

2021

ACS Sustainable Chem. Eng.

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This study examines the role of sulfur in rubber-modified bitumen and its response to ultraviolet (UV) exposure in terms of its viscoelasticity, creep recovery, healing behavior, surface chemical oxidation, and surface adhesion. Infrared spectroscopy showed a pronounced enrichment of oxidized sulfur and carbon compounds at the surface of sulfur-modified bitumen after mild heating and especially after UV irradiation. 3% added sulfur increased bitumen plasticity by all measures. UV aging marginally decreased bulk metrics of self-healing, but it severely diminished surface adhesion values, indicating that bulk metrics may not be able to accurately reflect crack-healing behavior if bitumen surfaces are prone to oxidative degradation.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Elemental Sulfur on the Aging Trajectory and Adhesion Characteristics of Rubber-Modified Bitumen

Hung

Fini

2021

ACS Sustainable Chem. Eng.

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“…Earlier studies suggested that PCPs involved several layers, including the surface layer (in porous concrete), base layer, subbase layer, coarse sand filter layer, fine sand filter layer and subgrade. PCP models have been proposed based on the AASHTO (1993) [146] guidelines and the regular layer thickness of porous concrete pavements [147]. Rahman et al [26] applied the thicknesses of 8, 4, 4, and 8 inches to the base layer (choker coarse and filter sand layer), the surface layer (porous concrete pavement), fine sand layer (filter blanket) and sub-base layer (coarse reservoir), respectively, as shown in Figure 2.…”

Section: Coarse and Fine Aggregatesmentioning

confidence: 99%

Stormwater Runoff Treatment Using Pervious Concrete Modified with Various Nanomaterials: A Comprehensive Review

et al. 2021

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Clean water is a vital need for all living creatures during their lifespan. However, contaminated stormwater is a major issue around the globe. A wide range of contaminants, including heavy metals, organic and inorganic impurities, has been discovered in stormwater. Some commonly utilized methods, such as biological, physical and chemical procedures, have been considered to overcome these issues. However, these current approaches result in moderate to low contaminant removal efficiencies for certain classes of contaminants. Of late, filtration and adsorption processes have become more featured in permeable concretes (PCs) for the treatment of stormwater. As nanoparticles have vast potential and unique characterizations, such as a higher surface area to cure polluted stormwater, employing them to improve permeable concretes’ capabilities in stormwater treatment systems is an effective way to increase filtration and adsorption mechanisms. The present study reviews the removal rate of different stormwater contaminants such as heavy metals, organic and other pollutants using nanoparticle-improved PC. The application of different kinds of nanomaterials in PC as porous media to investigate their influences on the properties of PC, including the permeability rate, compressive strength, adsorption capacity and mix design of such concrete, was also studied. The findings of this review show that different types of nanomaterials improve the removal efficiency, compressive strength and adsorption capacity and decrease the infiltration rate of PC during the stormwater treatment process. With regard to the lack of comprehensive investigation concerning the use of nanomaterials in PC to treat polluted stormwater runoff, this study reviews 242 published articles on the removal rate of different stormwater contaminants by using PC improved with nanoparticles.

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Comparison and correlation between polymer modified asphalt binders and mastics in high- and intermediate-temperature rheological behaviors

Wang

Song

Sun

2023

Construction and Building Materials

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Effect of blending protocol on the performance of SBS/sulfur/soybean-derived additive composite modified hard asphalt

Cited by 19 publications

References 35 publications

Effects of Elemental Sulfur on the Aging Trajectory and Adhesion Characteristics of Rubber-Modified Bitumen

Effects of Elemental Sulfur on the Aging Trajectory and Adhesion Characteristics of Rubber-Modified Bitumen

Stormwater Runoff Treatment Using Pervious Concrete Modified with Various Nanomaterials: A Comprehensive Review

Comparison and correlation between polymer modified asphalt binders and mastics in high- and intermediate-temperature rheological behaviors

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