Storage stability and its relationship with microstructure of SBS modified de-oiled asphalt

Liang, Ming; Ren, Shisong; Fan, Weiyu; Xue, Xin

doi:10.2991/mmme-16.2016.209

Cited by 4 publications

(3 citation statements)

References 10 publications

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“…The mole percentage of carbon atoms and the molar ratio H/C were also calculated using 1 H-NMR spectra according to the following equations (12)(13)(14)(15)(16). The comparison between elemental analysis and 1 H-NMR measurements are listed in Table 4.…”

Section: Elemental Analysismentioning

confidence: 99%

“…In addition, fatigue and aging properties of bitumen restrict its applications in industrial processes. SBS block copolymers enable swelling up to nine times its initial volume in maltene phase of bitumen and its continuous polymer phase helps to make polymer modified bitumen [7,[15][16][17]. SBS block copolymers improve the physical properties of bitumen to prevent rutting and cracking of asphalt in low or high temperature.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Polybutadiene Composition on the Glass Transition Temperature of SBS Block Copolymers

Gündüz¹,

Sar²,

Çakti³

2021

Eskişehir Technical University Journal of Science and Technology a - Applied Sciences and Engineering

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Gel permeation chromatography (GPC), nuclear magnetic resonance (NMR) spectroscopy, and elemental analysis techniques were used to study the molecular characteristics of six commercially available styrene-butadiene-styrene (SBS) block copolymers which are mostly used for modifying bitumen. The cis-1,4, trans-1,4, and 1,2-vinyl units in the polybutadiene (PB) parts and the styrene contents of the SBS block copolymers were investigated by means of 1 H-NMR spectra. In addition, carbon and hydrogen contents were estimated using 1 H-NMR measurements. These estimated values were confirmed using the results of elemental analysis (EA). The glass transition temperatures (Tg) of SBS block copolymers were obtained using differential scanning calorimetry (DSC). The SBS block copolymers used in this study have different structural properties such as molecular weight and linearity. However, it is observed that the Tg-onset values are directly proportional to the percentage of the 1,2-vinyl units and inversely proportional to the percentage of the trans-1,4 units in the SBS block copolymers.

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Section: Elemental Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Polybutadiene Composition on the Glass Transition Temperature of SBS Block Copolymers

Gündüz¹,

Sar²,

Çakti³

2021

Eskişehir Technical University Journal of Science and Technology a - Applied Sciences and Engineering

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“…The unused bitumen and SBS mixture must be stored in heated storage tanks. If the SBS modified bitumen is stored without heating and mixing, serious phase separation appears, as is described in publications [24,25]. However, reference [26] shows that SBS modified bitumen can be stored for a short period.…”

mentioning

confidence: 98%

Evaluation of Bitumen Modification Using a Fast-Reacting SBS Polymer at a Low Modifier Percentage

et al. 2023

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The study presented in this paper investigates the application of asphalt bitumen modification using a fast-reacting SBS polymer at a low modifier percentage. The hypothesis is that a fast-reacting styrene–butadiene–styrene (SBS) polymer that composes only 2% to 3% of the weight of the bitumen modification could extend the life of the pavement surfacing and pavement performance at relatively low input costs, increasing the net present value produced by the pavement during its life cycle. To confirm or refute this hypothesis, two types of road bitumens CA 35/50 and 50/70 were modified with low amounts of fast-reacting SBS polymer with the expectation of attaining properties similar to a 10/40–65 modified bitumen. For each type of unmodified bitumen, bitumen modification and comparative 10/40–65 modified bitumen, the following tests were conducted: needle penetration, softening point—ring and ball test method, and ductility test. The second part of the article focuses on a comparison of asphalt mixtures with different compositions of coarse-grain curves. For each mixture, complex modulus with varying temperatures and fatigue resistances are represented by the Wöhler diagram and compared. Based on in labo testing, the impact of the modification on pavement performance is evaluated. Life cycle changes for each type of modified and unmodified mixtures are quantified as road user costs, and attained benefits are compared with increased construction costs.

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Phase separation and thermal degradation of plastic bag waste modified bitumen during high temperature storage

Nouali¹,

Ghorbel

Derriche³

2020

Construction and Building Materials

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Storage stability and its relationship with microstructure of SBS modified de-oiled asphalt

Cited by 4 publications

References 10 publications

Effect of Polybutadiene Composition on the Glass Transition Temperature of SBS Block Copolymers

Effect of Polybutadiene Composition on the Glass Transition Temperature of SBS Block Copolymers

Evaluation of Bitumen Modification Using a Fast-Reacting SBS Polymer at a Low Modifier Percentage

Phase separation and thermal degradation of plastic bag waste modified bitumen during high temperature storage

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