Laboratory Investigation of the Properties of Asphalt Modified with Epoxy Resin

被引：109

作者：

Yu, Jianying ^{[1
]}

Cong, Peiliang ^{[1
,2
]}

Wu, Shaopeng ^{[1
]}

机构：

[1] Wuhan Univ Technol, Minist Educ, Key Lab Silicate Mat Sci & Engn, Wuhan 430070, Peoples R China

[2] Changan Univ, Sch Mat Sci & Engn, Xian 710064, Peoples R China

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2009年 / 113卷 / 06期

关键词：

epoxy resin; modified asphalt; FTIR; morphology; mechanical properties; STORAGE STABILITY; BEHAVIOR;

D O I：

10.1002/app.30324

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Epoxy asphalts were prepared by mixing styrene-butadiene-styrene (SBS) modified asphalt with epoxy resin. The curing process and morphology of epoxy asphalts were characterized by infrared spectroscopy and fluorescent microscope, respectively. The effects of epoxy resin contents, ratio of curing agent to epoxy resin and curing temperature on properties of epoxy asphalt were investigated. Results indicated that epoxy resin and epoxy asphalt showed similar curing efficiency. Epoxy asphalts can be cured at 120 or 60 degrees C and its viscosity at 1.20 degrees C can meet the demands of asphalt mixture mixing and paving. The chemical reaction of epoxy resin in epoxy asphalt is slow and reaction occurs not only with the curing agent but also carboxylic acid in epoxy asphalt. The microstructure of epoxy asphalt transforms from the dispersed structure to networks structure with epoxy resin content increasing and phase transition starts when 30 wt% epoxy resin present in asphalt. The softening point and tensile strength of epoxy asphalt increased with epoxy resin contents increasing. The softening point and tensile strength of epoxy asphalt were markedly improved when epoxy resin content was more than 30 wt%, which is attributed to formation of continuous structure of epoxy resin. (C) 2009 Wiley Periodicals, Inc. J Appl Polym Sci 113: 3557-3563, 2009

引用

页码：3557 / 3563

页数：7

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