[article]
Titre : |
Effect mechanism of acidification and vulcanization on SBS-modified asphalt |
Type de document : |
texte imprimé |
Auteurs : |
Feng Zhang, Auteur ; Lei Li, Auteur |
Année de publication : |
2022 |
Article en page(s) : |
p. 559-567 |
Note générale : |
Bibliogr. |
Langues : |
Anglais (eng) |
Catégories : |
Analyse thermique Asphalte Caractérisation Chromatographie sur gel Copolymère styrène butadiène styrène Matériaux -- Propriétés physiques Matériaux bitumineux Morphologie (matériaux) Polyphosphorique, Acide Rhéologie Soufre Vieillissement
|
Index. décimale : |
668.4 Plastiques, vinyles |
Résumé : |
A styrene-butadiene-styrene (SBS) modified asphalt compound was prepared by the addition of polyphosphoric acid (PPA) and sulfur. The effect of PPA and sulfur on major physical properties, including toughness and tenacity, aging resistance, and storage stability was investigated. The structural characteristics of SBS-modified (SM) asphalt, SBS/PPA-modified (SPM) asphalt, and SBS/PPA/sulfur-modified (SPSM) asphalt were investigated using scanning electron microscopy (SEM), gel filtration chromatography (GPC), and thermal analysis. It has been found that acidification prompted the clustering of SBS particles and confined the swelling of SBS, making SPM asphalt more susceptible to aging. Vulcanization changed the morphological characteristics of SBS in asphalt, improved the compatibility between SBS and asphalt, and weakened the aging susceptibility. Therefore, it is reasonable to modify SM asphalt by using PPA and sulfur together. |
Note de contenu : |
- MATERIALS AND METHODS : Materials - Sample preparation - Morphological characterization - Physical properties - Aging of asphalt - Rheological properties - GPC - Thermal analysis
- RESULTS AND DISCUSSION : Morphology - Physical properties - Rheological properties - GPC analysis - The experimental curve of a sam - Thermal analysis
- Table 1 : Physical properties of base asphalt
- Table 2 : Pore size and effective molecular weight range
- Table 3 : Physical properties of SM, SPM, SPSM asphalts
- Table 4 : Mn, Mw, Pd of SM, SPM, SPSM asphalts |
DOI : |
https://doi.org/10.1515/ipp-2022-4233 |
En ligne : |
https://drive.google.com/file/d/1QUvhoIlOPwABi5t62ihU1YUuOzT-PmB-/view?usp=share [...] |
Format de la ressource électronique : |
Pdf |
Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38330 |
in INTERNATIONAL POLYMER PROCESSING > Vol. 37, N° 5 (2022) . - p. 559-567
[article]
|