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A platform for research: civil engineering, architecture and urbanism
Understanding damping performance and mechanism of crumb rubber and styrene-butadiene-styrene compound modified asphalts
https://orcid.org/0000-0003-0857-1951
Graphical abstract Display Omitted
Highlights Noise reduction of CSCM asphalt pavement was explained from damping aspect. Integrity strongly influenced the DP of CSCM asphalts. Damping performance of CRM asphalt was improved by SBS and crosslinker. Scheme for the modification mechanism of CRM asphalts was presented.
Abstract This paper presents a preliminary study of the damping performance (DP) and mechanism of crumb rubber modified (CRM) asphalt. The loss factor (LF) temperature spectra of a dynamic shear rheometer was applied to evaluate the damping performance of crumb rubber (CR) and styrene-butadiene-styrene (SBS) compound modified (CSCM) asphalts using with four criteria. The results showed that CSCM asphalts exhibited a good damping performance with a wide effective damping temperature range, low damping temperature susceptibility, and relatively high LF in normal working temperature range of pavement. This finding served as an indirect but novel explanation for the superior noise reduction of CRM asphalt pavement. Then, an initial investigation of the damping mechanism of CSCM asphalts was conducted by analyzing molecular structure, thermal behavior, and morphology. The results showed that the integrity (synergistic effects of each component in the polymer system) strongly influenced the damping performance of CSCM asphalts through the temperature and blending of polymers and additives. The finding would facilitate the application of CRM asphalts-based damping materials, which can assist to develop sustainable solutions to tackle worldwide environmental problems to some extent.
Understanding damping performance and mechanism of crumb rubber and styrene-butadiene-styrene compound modified asphalts
https://orcid.org/0000-0003-0857-1951
Graphical abstract Display Omitted
Highlights Noise reduction of CSCM asphalt pavement was explained from damping aspect. Integrity strongly influenced the DP of CSCM asphalts. Damping performance of CRM asphalt was improved by SBS and crosslinker. Scheme for the modification mechanism of CRM asphalts was presented.
Abstract This paper presents a preliminary study of the damping performance (DP) and mechanism of crumb rubber modified (CRM) asphalt. The loss factor (LF) temperature spectra of a dynamic shear rheometer was applied to evaluate the damping performance of crumb rubber (CR) and styrene-butadiene-styrene (SBS) compound modified (CSCM) asphalts using with four criteria. The results showed that CSCM asphalts exhibited a good damping performance with a wide effective damping temperature range, low damping temperature susceptibility, and relatively high LF in normal working temperature range of pavement. This finding served as an indirect but novel explanation for the superior noise reduction of CRM asphalt pavement. Then, an initial investigation of the damping mechanism of CSCM asphalts was conducted by analyzing molecular structure, thermal behavior, and morphology. The results showed that the integrity (synergistic effects of each component in the polymer system) strongly influenced the damping performance of CSCM asphalts through the temperature and blending of polymers and additives. The finding would facilitate the application of CRM asphalts-based damping materials, which can assist to develop sustainable solutions to tackle worldwide environmental problems to some extent.
Understanding damping performance and mechanism of crumb rubber and styrene-butadiene-styrene compound modified asphalts
https://orcid.org/0000-0003-0857-1951
Graphical abstract Display Omitted
Highlights Noise reduction of CSCM asphalt pavement was explained from damping aspect. Integrity strongly influenced the DP of CSCM asphalts. Damping performance of CRM asphalt was improved by SBS and crosslinker. Scheme for the modification mechanism of CRM asphalts was presented.
Abstract This paper presents a preliminary study of the damping performance (DP) and mechanism of crumb rubber modified (CRM) asphalt. The loss factor (LF) temperature spectra of a dynamic shear rheometer was applied to evaluate the damping performance of crumb rubber (CR) and styrene-butadiene-styrene (SBS) compound modified (CSCM) asphalts using with four criteria. The results showed that CSCM asphalts exhibited a good damping performance with a wide effective damping temperature range, low damping temperature susceptibility, and relatively high LF in normal working temperature range of pavement. This finding served as an indirect but novel explanation for the superior noise reduction of CRM asphalt pavement. Then, an initial investigation of the damping mechanism of CSCM asphalts was conducted by analyzing molecular structure, thermal behavior, and morphology. The results showed that the integrity (synergistic effects of each component in the polymer system) strongly influenced the damping performance of CSCM asphalts through the temperature and blending of polymers and additives. The finding would facilitate the application of CRM asphalts-based damping materials, which can assist to develop sustainable solutions to tackle worldwide environmental problems to some extent.
Understanding damping performance and mechanism of crumb rubber and styrene-butadiene-styrene compound modified asphalts
Jiang, Zhenliang (author) / Easa, Said M. (author) / Hu, Changbin (author) / Zheng, Xiaoyan (author)
Construction and Building Materials ; 206 ; 151-159
2019-02-11
9 pages
Article (Journal)
Electronic Resource
English
DP , damping performance , CR , crumb rubber , SBS , styrene-butadiene-styrene , DSR , dynamic shear rheometer , LF , loss factor , CSCM , CR and SBS compound modified , CRM , CR modified , AH70 , base asphalt , crumb rubber modified , CRCM , crumb rubber and crosslinker modified , CRSM , crumb rubber and SBS modified , CRSCM , crumb rubber, SBS, and crosslinker modified , SEM , scanning electron microscopy , OM , optical microscopy , CGDP , criteria for good damping performance , <italic>TA</italic> , integral area under <italic>LF</italic> spectrum curve , <italic>δ</italic> , phase angle , <italic>EDTR</italic> , effective damping temperature range , PMA , polymer modified asphalts , <italic>T<inf>g</inf></italic> , glass transition temperature , <italic>LF</italic> <inf>max</inf> , peak value of <italic>LF</italic> spectrum , Asphalt , Damping performance , Characteristics , Mechanism
| British Library Online Contents | 2019
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