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原文传递 CHEMICAL AND RHEOLOGICAL CHARACTERISTICS OF STYRENE-BUTADIENE-STYRENE POLYMER-MODIFIED BITUMENS.

题名：	CHEMICAL AND RHEOLOGICAL CHARACTERISTICS OF STYRENE-BUTADIENE-STYRENE POLYMER-MODIFIED BITUMENS.
作者：	Lu-X; Isacsson-U
关键词：	AGING-MATERIALS; CHEMICAL-ANALYSIS; CHEMICAL-COMPOSITION; OXIDATION-; POLYMER-ASPHALT; POLYMER-CONTENT; POLYMERS-; RHEOLOGICAL-PROPERTIES; STYRENE-BUTADIENE-STYRENE
摘要：	Styrene-butadiene-styrene (SBS) polymer-modified bitumens were prepared in the laboratory and characterized using rheological and chemical methods. The results showed that morphology of the modified binders was influenced by bitumen composition and polymer content. Polymer modification was found to improve the rheological properties of bitumens. The degree of modification was dependent on the base bitumen and SBS content and structure. It was also observed that aging resulted in degradation of the SBS polymer. Changes in the rheological properties of aged modified binders were dependent on a combined effect of bitumen oxidation and polymer degradation, which varied with the source and grade of bitumen and type and content of polymer. Generally, the aged modified binders showed better rheological properties than aged base bitumens. The study also indicated that aging index is not suitable for evaluating the aging susceptibility of polymer-modified binders.
总页数：	Transportation Research Record. 1999. (1661) pp83-92 (7 Fig., 5 Tab., 16 Ref.)
报告类型：	科技报告