Performance evaluation of bitumen modified with styrene–isoprene-styrene and crumb rubber compound

Kök, Baha Vural; Yalcin, Beyza Furtana; Yılmaz, Mehmet; Yalçın, Erkut

doi:10.1016/j.conbuildmat.2022.128304

Cited by 14 publications

(4 citation statements)

References 41 publications

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“…Styrene is used as an alkene, and butadiene or isoprene as dienes. The corresponding block copolymers are called styrene-butadiene-styrene (SBS), styreneisoprene-styrene (SIS), styrene-ethylene/butylene-styrene (SEBS) 30,96 .…”

Section: Physical Modification Of Bitumen With Thermoplastic Elastomersmentioning

confidence: 99%

“…The glass transition temperatures of the polystyrene block and the polybutadiene block are 95 °C and -80 °C, respectively 97 . The polystyrene block is rigid at high operating temperatures, contributing to strength, and the polybutadiene block, which has a rubber effect at low temperatures, provides an elastic recovery 30,95,96,98 . SBS molecules have a linear or radial structure.…”

Section: Physical Modification Of Bitumen With Thermoplastic Elastomersmentioning

confidence: 99%

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A Review of Road Bitumen Modification Methods. Part 1 – Physical Modification

Gunka,

Astakhova,

Hrynchuk

et al. 2024

ChChT

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The information in this study is based on a thorough review of recent articles related to the production of binders for road construction and the improvement of their performance properties. The main attention is paid to the physical modification of road bitumen with polymer modifiers. The influence of the three main types of polymers (thermoplastics, elastomers, and thermoplastic elastomers) on the main physical and mechanical properties of bitumen-polymer compositions is shown. The main technological parameters and features of the physical modification of bitumen by different types of polymer modifiers have been determined.

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Section: Physical Modification Of Bitumen With Thermoplastic Elastomersmentioning

confidence: 99%

Section: Physical Modification Of Bitumen With Thermoplastic Elastomersmentioning

confidence: 99%

A Review of Road Bitumen Modification Methods. Part 1 – Physical Modification

Gunka,

Astakhova,

Hrynchuk

et al. 2024

ChChT

View full text Add to dashboard Cite

show abstract

“…However, when facing the severe challenges of the deterioration of the traffic environment in recent years in China, these forms of polymer-modified asphalt still have the following defects: high-temperature softening resistance, low-temperature cracking resistance, and anti-aging. These factors seriously degrade the quality of asphalt pavement [ 14 , 15 ]. Moreover, the preparation of conventional hot-mix asphalt usually requires a high temperature (>160 °C).…”

Section: Introductionmentioning

confidence: 99%

Facile Preparation of Polysiloxane-Modified Asphalt Binder Exhibiting Enhanced Performance

Qian,

Dong,

Chen

et al. 2023

Polymers

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The development of polymer-modified asphalt (asphalt = asphalt binder) is significant because the polymer modifier can improve the performance of asphalt mixture and meet the requirements of the modern asphalt pavement. Herein, we present a novel polysiloxane-modified asphalt with enhanced performance, formed by simply mixing hydroxy-terminated polysiloxane (HO-PDMS) into base asphalt at 140 °C. The interaction mechanism of HO-PDMS in base asphalt was characterized by FT-IR, GPC, and DSC. It reveals that HO-PDMS polymers have been chemically bonded into the asphalt, and, thus, the resultant asphalt exhibits optimal compatibility and storage stability. The results based on fluorescence microscopy and a segregation test prove that HO-PDMS has good compatibility with base asphalt. Moreover, by virtue of the intriguing properties of polysiloxane, the present asphalt possesses improved low- and high-temperature properties, higher thermal stability, and enhanced hydrophobicity compared to conventional asphalt when using an appropriate dosage of HO-PDMS. DSC indicated that the Tg of modified asphalt (−12.8 °C) was obviously lower than that of base asphalt (−7.1 °C). DSR shows that the rutting parameter of modified asphalt was obviously higher than that of base asphalt. BBR shows that modified asphalt exhibited the lowest stiffness modulus and the highest creep rate with an HO-PDMS dosage of 6% and 4%, respectively. These results demonstrate that polysiloxane-modified asphalt can be promisingly utilized in realistic asphalt pavement with specific requirements, particularly high-/low-temperature resistance.

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“…Bitumen can be modified with styrene-isoprene-styrene (SIS). A study [22] found that SIS combined with crumb rubber resulted in significant improvement in the softening point and temperature susceptibility of the modified mixture.…”

mentioning

confidence: 99%

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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Performance evaluation of bitumen modified with styrene–isoprene-styrene and crumb rubber compound

Cited by 14 publications

References 41 publications

A Review of Road Bitumen Modification Methods. Part 1 – Physical Modification

A Review of Road Bitumen Modification Methods. Part 1 – Physical Modification

Facile Preparation of Polysiloxane-Modified Asphalt Binder Exhibiting Enhanced Performance

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

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