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 .
