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选取了4种有代表性的基质沥青和分别掺加25%、33%和40%湖沥青的12个沥青胶浆样品,通过试验分析研究了常规沥青评价对湖沥青改性沥青的适用性;对SK70沥青分别添加灰分和矿粉得到的两种沥青胶浆进行沥青常规试验,探讨粉胶比对其常规指标的影响。在综合分析各种沥青胶浆的试验结果上,提出了沥青常规评价指标不再适用于评价湖沥青改性沥青。
Four representative matrix asphalt and 12 asphalt mortar samples with 25%, 33% and 40% lake asphalt were selected respectively. The applicability of conventional asphalt evaluation to lake asphalt modified asphalt was studied through experimental analysis. Two kinds of asphalt mortar obtained by adding ash and mineral powder separately to SK70 asphalt were tested on asphalt to investigate the influence of powder cement ratio on its conventional index. Based on the comprehensive analysis of the test results of various asphalt mortars, it is proposed that the conventional evaluation indexes of asphalt are no longer suitable for evaluating lake asphalt modified asphalt.