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利用动态时间扫描试验、频率扫描试验、稳态流动试验以及静态蠕变恢复试验对4种不同矿物填料(矿粉、消石灰、水泥、粉煤灰)沥青胶浆的高温性能评价方法进行比较,同时对矿物填料对沥青高温性能的影响进行了评价。研究表明:沥青胶浆的高温性能优劣依次为消石灰沥青胶浆、粉煤灰沥青胶浆、水泥沥青胶浆、矿粉沥青胶浆、基质沥青;采用车辙因子、动粘度和复合模量主曲线3种评价方法得到的试验结果基本上是一致,零剪切粘度和静态蠕变试验结果一致,静态蠕变恢复方法能区分延迟弹性变形、粘性和弹性,且操作简单,是一种有效评价沥青胶浆高温性能的方法。
The methods of evaluating the high temperature performance of four different mineral fillers (slag, slaked lime, cement, fly ash) asphalt mortar were compared by dynamic time-sweep test, frequency sweep test, steady flow test and static creep recovery test The effect of mineral fillers on the high temperature performance of asphalt was evaluated. The results show that the high temperature properties of asphalt mortar are as follows: slaked lime asphalt mortar, fly ash asphalt mortar, cement asphalt mortar, mineral powder asphalt mortar and matrix asphalt; the rutting factor, kinematic viscosity and composite modulus The results of three kinds of evaluation methods are basically the same. The zero-shear viscosity is in agreement with the static creep test. The static creep recovery method can distinguish the delayed elastic deformation, viscosity and elasticity, and is easy to operate. It is an effective evaluation Method of high temperature performance of asphalt mortar.