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为了合理评价自行研发的HH-X温拌剂的降温效果及温拌改性沥青混合料的最佳拌和温度,采用传统的旋转压实仪(SGC)法和研发的沥青混合料和易性试验仪法,对不同温度下的温拌和热拌改性沥青混合料试件的体积指标(毛体积密度和空隙率)进行对比分析;并对温拌和热拌混合料在5种不同温度和不同频率下测定试验仪的扭矩大小。研究结果表明:沥青混合料和易性试验仪的最佳拌和频率为30Hz,此时的和易性最好;且2种试验方法得出基本一致的规律,即HH-X温拌剂的加入可有效降低混合料拌和温度,降低幅度达40℃左右,由此确定出温拌SBS改性沥青混合料最佳拌和温度为130℃。
In order to rationally evaluate the cooling effect of self-developed HH-X warm mix agent and the optimal mixing temperature of warm mix modified asphalt mixture, the conventional rotary compactor (SGC) method and developed asphalt mixture workability test Instrument method to compare the volume index (wool bulk density and voidage) of hot-mix hot-mix modified asphalt mixture samples at different temperatures. The hot mix-hot mixes were tested at five different temperatures and different frequencies Tester under test the size of the torque. The results show that the best mixing frequency of asphalt mixability tester is 30Hz, and the workability is the best at this time. And the two kinds of test methods are basically the same, that is, adding HH-X warm mix Can effectively reduce the mixing temperature of the mixture, reducing the extent of about 40 ℃, which determine the warm mix SBS modified asphalt mixture optimum mixing temperature of 130 ℃.