Influence of swelling-degradation degree on rheological properties, thermal pyrolysis kinetics, and emission components of waste crumb rubber modified bitumen

S. Ren; X. Liu; P. Lin; S. Erkens

doi:10.1016/j.conbuildmat.2022.127555

Influence of swelling-degradation degree on rheological properties, thermal pyrolysis kinetics, and emission components of waste crumb rubber modified bitumen

S. Ren, X. Liu, P. Lin, S. Erkens

Pavement Engineering

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Abstract

This study investigated the effects of swelling-degradation degree on the rheological properties and thermal pyrolysis behaviors of crumb rubber modified bitumen (CRMB). The equilibrium viscosity of CRMB in 160 ◦Cswelling process is 10.5 Pa·s at 8 h. During the 200℃-degradation procedure, the viscosity increased to a maximum value of 20.58 Pa·s at 7.5 h and gradually reduced to a stable value of 11.09 Pa·s after 35 h. The swelling and degradation processes exhibit the opposite influence on the rheological properties of CRMB. Moreover, the degradation process accelerated the pyrolysis rate of CRMB but hindered the release of toxic gas CO and hydrocarbons.

Original language	English
Article number	127555
Pages (from-to)	1-15
Number of pages	15
Journal	Construction and Building Materials
Volume	337
Issue number	127555
DOIs	https://doi.org/10.1016/j.conbuildmat.2022.127555
Publication status	Published - 2022

Keywords

Crumb rubber modified bitumen
Swelling-degradation behaviors
Rheological properties
Thermal pyrolysis kinetics
Volatile components

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10.1016/j.conbuildmat.2022.127555

1st-Influence of swelling-degradation degree on rheological properties, thermal pyrolysis kinetics, and emission components of waste crumb rubber modified bitumenFinal published version, 4.33 MBLicence: CC BY

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title = "Influence of swelling-degradation degree on rheological properties, thermal pyrolysis kinetics, and emission components of waste crumb rubber modified bitumen",

abstract = "This study investigated the effects of swelling-degradation degree on the rheological properties and thermal pyrolysis behaviors of crumb rubber modified bitumen (CRMB). The equilibrium viscosity of CRMB in 160 ◦Cswelling process is 10.5 Pa·s at 8 h. During the 200℃-degradation procedure, the viscosity increased to a maximum value of 20.58 Pa·s at 7.5 h and gradually reduced to a stable value of 11.09 Pa·s after 35 h. The swelling and degradation processes exhibit the opposite influence on the rheological properties of CRMB. Moreover, the degradation process accelerated the pyrolysis rate of CRMB but hindered the release of toxic gas CO and hydrocarbons. ",

keywords = "Crumb rubber modified bitumen, Swelling-degradation behaviors, Rheological properties, Thermal pyrolysis kinetics, Volatile components",

author = "S. Ren and X. Liu and P. Lin and S. Erkens",

year = "2022",

doi = "10.1016/j.conbuildmat.2022.127555",

language = "English",

volume = "337",

pages = "1--15",

journal = "Construction and Building Materials",

issn = "0950-0618",

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TY - JOUR

T1 - Influence of swelling-degradation degree on rheological properties, thermal pyrolysis kinetics, and emission components of waste crumb rubber modified bitumen

AU - Ren, S.

AU - Liu, X.

AU - Lin, P.

AU - Erkens, S.

PY - 2022

Y1 - 2022

N2 - This study investigated the effects of swelling-degradation degree on the rheological properties and thermal pyrolysis behaviors of crumb rubber modified bitumen (CRMB). The equilibrium viscosity of CRMB in 160 ◦Cswelling process is 10.5 Pa·s at 8 h. During the 200℃-degradation procedure, the viscosity increased to a maximum value of 20.58 Pa·s at 7.5 h and gradually reduced to a stable value of 11.09 Pa·s after 35 h. The swelling and degradation processes exhibit the opposite influence on the rheological properties of CRMB. Moreover, the degradation process accelerated the pyrolysis rate of CRMB but hindered the release of toxic gas CO and hydrocarbons.

AB - This study investigated the effects of swelling-degradation degree on the rheological properties and thermal pyrolysis behaviors of crumb rubber modified bitumen (CRMB). The equilibrium viscosity of CRMB in 160 ◦Cswelling process is 10.5 Pa·s at 8 h. During the 200℃-degradation procedure, the viscosity increased to a maximum value of 20.58 Pa·s at 7.5 h and gradually reduced to a stable value of 11.09 Pa·s after 35 h. The swelling and degradation processes exhibit the opposite influence on the rheological properties of CRMB. Moreover, the degradation process accelerated the pyrolysis rate of CRMB but hindered the release of toxic gas CO and hydrocarbons.

KW - Crumb rubber modified bitumen

KW - Swelling-degradation behaviors

KW - Rheological properties

KW - Thermal pyrolysis kinetics

KW - Volatile components

UR - https://www.sciencedirect.com/science/article/pii/S0950061822012314?via%3Dihub

U2 - 10.1016/j.conbuildmat.2022.127555

DO - 10.1016/j.conbuildmat.2022.127555

M3 - Article

VL - 337

SP - 1

EP - 15

JO - Construction and Building Materials

JF - Construction and Building Materials

SN - 0950-0618

IS - 127555

M1 - 127555

ER -

Influence of swelling-degradation degree on rheological properties, thermal pyrolysis kinetics, and emission components of waste crumb rubber modified bitumen

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