Asphalts ; trinidad lake ; trinidad lake modified asphalt .

地沥青;特立尼达湖;特立尼达湖改性地沥青。

Conventional indexes of seven sbs modified asphalts .

7种改性沥青的常规技术指标。

Abstract : changes of group-component , functional groups of carbonyl and sulfoxide and molecular weight distribution of shengli 100b and south korea 70 asphalts af ter ageing were investigated by ir spectra and gel permeation chromatograph .

文摘：利用红外光谱和凝胶色谱等技术考察了胜利100b和韩国70两种道路沥青热老化后族组成、羰基与亚砜官能团以及相对分子质量分布的变化。