沥青回收方法对沥青老化影响程度的对比试验分析

Contrast test analyse of asphalt reclame method for ageing degree

将原样沥青经过不同程度的老化,三氯乙烯进行溶解,然后采用阿布森法和旋转蒸发器两种沥青回收方法进行沥青的回收,为分析两种沥青回收方法在回收过程中对沥青老化的影响程度,对原样沥青、阿布森法回收的沥青以及旋转蒸发器法回收的沥青进行针入度、软化点、延度、粘度、动态剪切模量、相位角、低温弯曲蠕变劲度模量等性能指标的检测,通过试验分析可以得出,阿布森法和旋转蒸发器法在沥青的回收过程中都会使沥青产生一定程度的老化,但是老化程度都相对较低,在两种回收方法的比较中,阿布森法对沥青老化的影响要比旋转蒸发器法小,但是回收的试验过程要比旋转蒸发器法复杂,所以对两种回收方法的选择要结合具体实际情况恰当选取。

Using trichlorathylene to dissolve the different ageing asphalts, And use abson and rotating evaporative reclaimer to reclame asphalt, test penetration, softening point, ty, dynamic shear modulus, phase angle, bending creep stiffness. Get the conclusion th ductility, method viscosiat. abson method and rotating evaporative reclaimer all make different asphalt ageing, but the aging degree are small, during the two reclame methods, abson method can get smaller ageing degree, but the process of reclaming is complex, so the choice of the two method is decisied by the practice instance.