SBS聚合物改性瀝青的比較特性研究

Study of Compared Characterization of SBS Polymer Modified Bitumen

葉光華　王忠偉　譚躍輝　

摘　要：將苯乙烯-丁二烯-苯乙烯(SBS)聚合物改性瀝青用常規(guī)試驗(yàn)方法(針入度、軟化點(diǎn)、動粘度及脆點(diǎn))與動態(tài)力學(xué)分析方法所得到的試驗(yàn)結(jié)果進(jìn)行比較研究.結(jié)果表明,SBS聚合物能有效提高瀝青的粘彈性,但這種提高作用不能用常規(guī)方法進(jìn)行檢驗(yàn),只能通過動態(tài)力學(xué)分析得到證實(shí);用常規(guī)方法和動態(tài)力學(xué)方法所測得的參數(shù)之間存在一定的相關(guān)關(guān)系;針入度、軟化點(diǎn)等參數(shù)不能用來評估SBS改性瀝青的流變特性.
關(guān)鍵詞：道路材料; 聚合物改性瀝青; SBS聚合物; 流變特性; 常規(guī)試驗(yàn)方法; 動態(tài)力學(xué)分析
分類號：U414.1; O631　文獻(xiàn)標(biāo)識碼：A
文章編號：1000-2502(2002)01-0078-04

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