Investigation of the rheological properties and storage stability of CR/SBS modified asphalt

Liang, Ming; Xue, Xin; Fan, Weiyu; Luo, Haiwen; Wang, Xiaobo; Xing, Baodong

doi:10.1016/j.conbuildmat.2014.10.022

Cited by 147 publications

(26 citation statements)

References 29 publications

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“…This is a characteristic peak which was caused by stretching vibration of C@O in EVA modifier and the peaks in 1595 and 1458 cm 21 were caused by C@C and C@O of asphalt. Stretching vibration of unsaturated bond is an important feature of the aromatics in modified asphalt among 2400-1500 cm 21 .…”

Section: Fourier Transform Infrared Spectroscopy (Ftir) Analysismentioning

confidence: 96%

“…A small absorption peak appeared after the asphalt modified in 1739 cm 21 . This is a characteristic peak which was caused by stretching vibration of C@O in EVA modifier and the peaks in 1595 and 1458 cm 21 were caused by C@C and C@O of asphalt.…”

Section: Fourier Transform Infrared Spectroscopy (Ftir) Analysismentioning

confidence: 97%

“…Two obvious absorption peaks were appeared in 2917 and 2857 cm 21 . The peak was aroused by asymmetric contraction of CAH bond in 2917 cm 21 and symmetrical contraction of CAH bond in 2857 cm 21 . These can explain that after modifiers added to asphalt, modifiers absorb saturated points of base asphalt and this can cause the movement pitch of the molecular chain segment.…”

Section: Fourier Transform Infrared Spectroscopy (Ftir) Analysismentioning

confidence: 98%

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Influence of modification process parameters on the properties of crumb rubber/EVA modified asphalt

Fang

Qiao

et al. 2016

J of Applied Polymer Sci

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Crumb rubber (CR) and ethylene vinyl acetate copolymer (EVA) were adopted as asphalt modifiers. Routine tests, softening point, penetration, and ductility were used to evaluate the basic properties of crumb rubber and ethylene vinyl acetate copolymers (CR/EVA) modified asphalt. The segregation experiment measured the storage stability. Modern test methods such as fluorescence microscopic photography technology was used to study stability of polymer modified asphalt. Infrared spectrum experiment was used to analyze the composition differences of the upper part and lower part of CR/EVA modified asphalt. Matlab software was employed to fit out the formulae of ductility, penetration, and softening point difference of modified asphalt and shearing temperature, shearing time and shearing rate separately. Compared with base asphalt, the properties of CR/EVA modified asphalt have been greatly improved. The formulae which were fitted out by Matlab software showed that the shearing time was the foremost factor affecting the properties of CR/EVA modified asphalt, followed by shearing temperature, and the last was shearing rate. The conclusions which were fitted by orthogonal experiment were basically consistent with the results of formulae which were fitted out by Matlab software.

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Section: Fourier Transform Infrared Spectroscopy (Ftir) Analysismentioning

confidence: 96%

Section: Fourier Transform Infrared Spectroscopy (Ftir) Analysismentioning

confidence: 97%

Section: Fourier Transform Infrared Spectroscopy (Ftir) Analysismentioning

confidence: 98%

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Influence of modification process parameters on the properties of crumb rubber/EVA modified asphalt

Fang

Qiao

et al. 2016

J of Applied Polymer Sci

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“…Scrap tires have been thoroughly examined to determine their usability in asphalt mixtures. The most interesting developments have been identified in mixtures modified with crumb rubber, which can be added to the bitumen or to the mixture itself [33][34][35]. Ceramics also represent an alternative source of aggregate.…”

Section: Introductionmentioning

confidence: 99%

Mastic asphalt modified with recycled polyurethane foam

2018

JCE

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Lijevani asfalt s dodatkom reciklirane poliuretanske pjene U radu se analizira mogućnost upotrebe reciklirane poliuretanske pjene kao veziva/ modifikatora za lijevani asfalt. Rezultati pokazuju da se tvrđi bitumen dobiva s povećanjem poliuretanske pjene do 5 % kada obradivost mješavine postaje nepovoljna. Proizvedena je mješavina lijevanog asfalta s 4 % poliuretanske pjene u bitumenu. Zabilježena je manja vrijednost dubine utiskivanja u usporedbi s uzorkom bez dodataka te je ustanovljeno da se modificirani lijevani asfalt može koristiti na cestama s teškim prometnim opterećenjem. Dobiveni rezultati pokazuju da postoje dobri izgledi za širu primjenu ovog otpadnog polimera.

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“…The French standard NFP98-140 gives the definition of HMBC, whose complex modulus is higher than 14 000 MPa at 15 °C and 10 Hz. 7 However, there are no specific standards related to high modulus bitumen in China. In engineering applications, we usually regard bitumen whose complex modulus is greater than 10 000 MPa at 60 °C and 10 Hz as high modulus bitumen.…”

Section: Introductionmentioning

confidence: 99%

Effects of SBS Configuration on Performance of High Modulus Bitumen Based on Dynamic Mechanical Analysis

Liang

Kong

et al. 2016

Kem. Ind.

Self Cite

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High modulus bitumens modified by polystyrene-block-polybutadiene-block-polystyrene (SBS) with different molecular structure were investigated on dynamic shear rheometer and fluorescence microscopy to evaluate viscoelastic properties and morphology of binders. The results shows that storage modulus (G') is obviously less than loss modulus (G"), which means viscous behaviour of bitumen is dominant, and anti-rutting factor (G* ⁄ sin δ) is markedly enhanced by star SBS than by linear SBS. The morphology indicated that star SBS improved the softening point more obviously, tending to form a cross-linked network in bitumen. As for linear SBS, it is dispersed in bitumen in the form of globules and enhances the ductility of binder.

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Investigation of the rheological properties and storage stability of CR/SBS modified asphalt

Cited by 147 publications

References 29 publications

Influence of modification process parameters on the properties of crumb rubber/EVA modified asphalt

Influence of modification process parameters on the properties of crumb rubber/EVA modified asphalt

Mastic asphalt modified with recycled polyurethane foam

Effects of SBS Configuration on Performance of High Modulus Bitumen Based on Dynamic Mechanical Analysis

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