Indexed by:
Abstract:
To improve the properties of styrene-isoprene-styrene (SIS) modified asphalt and decline the SIS content in asphalt further, SIS compound modified asphalt has been prepared by the addition of SIS, poly phosphoric acid (PPA) and sulfur. The physical and rheological properties of modified asphalts were studied and the structural characteristics were analyzed by adopting morphology observation, infrared spectroscopy and thermal analysis. The research showed the suitable addition of PPA improved the high and low-temperature properties of asphalt and declined the SIS content without negative effect, The use of sulfur can improve the storage stability of modified asphalt greatly and increase the susceptibility to ageing. The morphology and infrared analysis indicate the effects of PPA, sulfur and ageing on the structural characteristics of asphalt. The calculation for the characteristic peaks of enthalpy curves in thermal analysis was used to investigate the influence of PPA and sulfur on the distribution of molecule weight and constitutes of SIS modified (SM) asphalt before and after ageing efficiently. (C) 2017 Elsevier B.V. All rights reserved.
Keyword:
Reprint 's Address:
Email:
Version:
Source :
MATERIALS CHEMISTRY AND PHYSICS
ISSN: 0254-0584
Year: 2018
Volume: 205
Page: 44-54
2 . 7 8 1
JCR@2018
4 . 3 0 0
JCR@2023
ESI Discipline: MATERIALS SCIENCE;
ESI HC Threshold:284
JCR Journal Grade:2
CAS Journal Grade:3
Cited Count:
WoS CC Cited Count: 23
SCOPUS Cited Count: 24
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 4
Affiliated Colleges: