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    • 3. 发明申请
    • METHOD OF SELECTING A HIGH MODULUS LAYER BINDER
    • 选择高模块层的方法
    • WO2005083005A1
    • 2005-09-09
    • PCT/US2005/004466
    • 2005-02-14
    • KOCH PERFORMANCE ROADS, INC.PERDOMO, DarioSTEGER, Richard, K.DRBOHLAV, Joseph, III
    • PERDOMO, DarioSTEGER, Richard, K.DRBOHLAV, Joseph, III
    • C08L95/00
    • C08L95/00
    • A method of selecting an asphalt binder for use in constructing a high modulus layer of bituminous pavement is provided. This method includes measuring the complex shear modulus of one or more binders at a temperature of not more than about 30°C, measuring the creep stiffness of one or more binders at a temperature near the lowest in-service temperature at the depth of the layer at which the bituminous pavement is being placed and selecting an asphalt binder for the high modulus layer using the complex shear modules and creep stiffness measurements. A further aspect of the present invention is a method of formulating an asphalt binder that has a desirable complex shear modulus and creep stiffness for use in making the high modulus layer. This method of formulation includes mixing a stiff asphalt binder and a soft asphalt binder together to form a binder having a complex shear modulus of at least about 2 MPa at 30°C and 10 rad/sec and a creep stiffness of no more than about 300 MPa when measured at a temperature of about 10°C above tie lowest in-service pavement temperature at 60 seconds loading time, on RTFO-aged material.
    • 提供了一种选择用于构建沥青路面的高模量层的沥青粘合剂的方法。 该方法包括在不高于约30℃的温度下测量一种或多种粘合剂的复合剪切模量,测量在层的深度处接近最低使用温度的温度下的一种或多种粘合剂的蠕变刚度 沥青路面正在放置,并使用复杂的剪切模块和蠕变刚度测量选择用于高模量层的沥青粘合剂。 本发明的另一方面是配制沥青粘合剂的方法,该沥青粘合剂具有用于制备高模量层的理想的复合剪切模量和蠕变刚度。 这种配制方法包括将刚性沥青粘合剂和软沥青粘合剂混合在一起以形成在30℃和10弧度/秒下具有至少约2MPa的复合剪切模量和不大于约300的蠕变刚度的粘合剂 当在约10℃的温度下测量时,在60秒的加载时间下,在RTFO老化的材料上,在最低使用路面温度下测量。