Thermo-rheological behavior and compatibility of modified asphalt with various styrene–butadiene structures in SBS copolymers

Liang, Ming; Liang, Pei; Fan, Weiyu; Qian, Chengduo; Xue, Xin; Jian, Shi; Gao, Nan

doi:10.1016/j.matdes.2015.09.002

Cited by 198 publications

(67 citation statements)

References 38 publications

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“…Reactive block copolymers tend to increase the softening point of the blends, while the penetration decreases, associated to the GMA concentration in the polymer. Asphalts with higher softening points are less susceptible to permanent deformation (rutting) and the reduction in penetration is associated with the rigidity of the material.…”

Section: Resultsmentioning

confidence: 99%

“…Maxima in G ′ and G ″ correspond to the sample A/GS‐BA‐GS4, increasing two orders of magnitude with respect to neat asphalt, thus enhancing the resistance to deformation. The loss modulus G ″ is always larger than storage modulus G ′ in the temperature interval . In addition, the crossover frequency decreases with the presence of reactive copolymers and the concentration of GMA functional groups, as shown in Table .…”

Section: Resistance To Permanent Deformationmentioning

confidence: 88%

“…The critical temperature of base asphalt according to SHRP is 65 °C. The total resistance of the blends to damage under repeated loading is measured by the complex modulus ( G *) and the relative amount of energy recovered or dissipated into non‐recoverable deformation is related to the phase angle (sin δ) during the loading cycles . A high asphalt binder stiffness avoids excessive deformation of the pavements, with sufficient elasticity to return to the original condition after unloading.…”

Section: Resistance To Permanent Deformationmentioning

confidence: 99%

“…As the crossover frequency decreases, the binder hardness increases and thus the rutting resistance . The mechanical properties of asphalt in the glassy region are poorly affected by polymer modifiers (Figure , Table ) …”

Section: Resistance To Permanent Deformationmentioning

confidence: 99%

See 3 more Smart Citations

Asphalt modified with reactive tri‐block polymers obtained by via reversible addition‐fragmentation chain transfer polymerization

Vargas

Benvenuta‐Tapia

Sánchez

et al. 2018

J of Applied Polymer Sci

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In this work, asphalt modifiers consisting of a series of poly(glycidyl methacrylate‐ran‐styrene)‐block‐poly(butyl acrylate)‐block‐poly(glycidyl methacrylate‐ran‐styrene) tri‐block copolymers (GS‐BA‐GS) were synthesized via reversible addition‐fragmentation chain transfer polymerization. Particular attention is given to the influence of controlled copolymer structures on the physical properties, morphology, thermal stability, and rheological behavior of the asphalt blends. Results show that the degree of asphalt modification is a function of the copolymer structure in relation to the epoxide content in the chain ends of the copolymers. The rheological, thermal, and microstructure analyses reveal that the addition of reactive copolymers increases chemical interactions with the polar fraction of asphalt. Absence of gelation in addition to improvements in viscosity, elasticity, storage stability are observed in the blends with GMA concentrations of 2%–4% with respect to copolymers without functional groups. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47201.

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Section: Resultsmentioning

confidence: 99%

Section: Resistance To Permanent Deformationmentioning

confidence: 88%

Section: Resistance To Permanent Deformationmentioning

confidence: 99%

Section: Resistance To Permanent Deformationmentioning

confidence: 99%

See 2 more Smart Citations

Asphalt modified with reactive tri‐block polymers obtained by via reversible addition‐fragmentation chain transfer polymerization

Vargas

Benvenuta‐Tapia

Sánchez

et al. 2018

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…Some efforts [12,13] have investigated the compatibility between asphaltic components and SBS copolymers. As a rule of thumb, asphalt with higharomatic contents or linear SBS can form compatible and stable SBS-modified asphalt [14,15]. Moreover, incompatibility between asphalt and polymer can be avoided by adding aromatic oils or stabilizing agents to the mixture [12,16].…”

Section: Introductionmentioning

confidence: 99%

Effect of Material Composition on Cohesion Characteristics of Styrene-Butadiene-Styrene-Modified Asphalt Using Surface Free Energy

Zhang

et al. 2017

Advances in Materials Science and Engineering

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Styrene-butadiene-styrene-(SBS-) modified asphalts were prepared by mixing different base asphalts, SBS modifier, extracting oil, and stabilizing agents. The contact angles between SBS-modified asphalt and distilled water, glycerol, and formamide were detected by the sessile drop method. Based on the surface energy theory, the surface free energy and cohesive power of SBS-modified asphalt were calculated. The influence of the raw materials composition, such as the virgin asphalt and SBS modifier types as well as the extracting oil and stabilizing agent contents, on the cohesive characteristics of SBS-modified asphalt was discussed. The results showed that virgin asphalt was compatible with SBS modifiers to improve cohesiveness. The cohesive power of branched SBSmodified asphalt was larger than that of linear SBS-modified asphalt. The cohesion of SBS-modified asphalt was improved as the SBS modifier and stabilizer contents increased but was reduced for excessive extraction oil contents. The cohesive characteristics of the SBS-modified asphalt were improved by the formation of stable three-dimensional network structures by cross-linking, winding, and grafting among different raw materials.

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The role of synthetic P (MMA‐co‐MAH) as compatibilizer in the preparation of chlorinated polyethylene/polysodium acrylate water‐swelling rubber

et al. 2018

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By multicomponent mechanical blending technology, water‐swelling rubber (WSR) was prepared through choosing chlorinated polyethylene (CPE), a superabsorbent polymer (cross‐linking poly(sodium acrylate), CPNaAA), and compatibilizer (poly(methyl methacrylate‐co‐maleic anhydride), P (MMA‐co‐MAH)) along with other minor additives. P (MMA‐co‐MAH) was synthesized by grafting maleic anhydride (MAH) onto methyl methacrylate (MMA). Microstructure, water‐absorbent properties, and mechanical properties of WSR were investigated. The results showed that P (MMA‐co‐MAH) boosted the dispersibility between CPNaAA and CPE and led to the increase in Shore A hardness, tensile strength, tensile stress at 100%, and water‐swelling behavior, whereas the elongation at break and weight loss were decreased with P (MMA‐co‐MAH) content. When the content of P (MMA‐co‐MAH) reached 8 phr, the tensile strength, hardness, and water‐swelling ability of dry‐state WSR exhibited a maximum value and the percentage loss ratio of CPNaAA reached a relatively low value.

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Thermo-rheological behavior and compatibility of modified asphalt with various styrene–butadiene structures in SBS copolymers

Cited by 198 publications

References 38 publications

Asphalt modified with reactive tri‐block polymers obtained by via reversible addition‐fragmentation chain transfer polymerization

Asphalt modified with reactive tri‐block polymers obtained by via reversible addition‐fragmentation chain transfer polymerization

Effect of Material Composition on Cohesion Characteristics of Styrene-Butadiene-Styrene-Modified Asphalt Using Surface Free Energy

The role of synthetic P (MMA‐co‐MAH) as compatibilizer in the preparation of chlorinated polyethylene/polysodium acrylate water‐swelling rubber

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