Storage stability of SBS/sulfur modified bitumens at high temperature: Influence of bitumen composition and structure

被引：68

作者：

Aguirre de Carcer, Inigo ^{[1
]}

Masegosa, Rosa M. ^{[1
]}

Teresa Vinas, M. ^{[1
]}

Sanchez-Cabezudo, Marta ^{[1
]}

Salom, Catalina ^{[2
]}

Prolongo, Margarita G. ^{[2
]}

Contreras, Veronica ^{[3
]}

Barcelo, Francisco ^{[3
]}

Paez, Antonio ^{[3
]}

机构：

[1] Univ Politecn Madrid, EUIT Aeronaut, E-28040 Madrid, Spain

[2] Univ Politecn Madrid, ETSI Aeronaut, E-28040 Madrid, Spain

[3] Repsol, CTR, Madrid 28931, Spain

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2014年 / 52卷

关键词：

SBS copolymer; Polymer modified bitumen; Thermal stability; Phase separation; Structure; ASPHALTENES; BLENDS;

D O I：

10.1016/j.conbuildmat.2013.10.069

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Polymer modified bitumens, PMBs, are usually prepared at high temperature and subsequently stored for a period of time, also at high temperature. The stability of PMBs, in these conditions, has a decisive influence in order to obtain the adequate performances for practical applications. In this article the attention is focused in the analysis of the factors that determine the stability of styrene-butadiene-styrene copolymer (SBS)/sulfur modified bitumens when the mixtures are maintained at high temperature. Bitumens from different crude oil sources were used to prepare SBS/sulfur modified bitumens. Changes in the values of viscosity, softening point, as well as in the morphology of PMB samples, stored at 160 degrees C, were related to the bitumen chemical composition and to the amount of asphaltene micelles present in the neat bitumen used in their preparation. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：245 / 252

页数：8

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