1.1 本试验方法包括在使用平行板几何形状进行动态（振荡）剪切试验时，测定沥青粘合剂的动态剪切模量和相位角。它适用于动态剪切模量值在100 Pa至10 MPa范围内的沥青粘合剂。该模量范围通常在4至88°C之间，以10 rad/s的速度获得。该试验方法旨在根据规范试验的要求确定沥青粘合剂的线性粘弹性，而不是作为全面表征沥青粘合剂粘弹性的综合程序。 1.2 本标准适用于未老化材料，根据试验方法老化的材料 D2872 ，材料按照惯例老化 D6521 或根据两种试验方法老化的材料 D2872 和实践 D6521 . 该程序仅限于包含最大尺寸小于250μm颗粒的沥青粘合剂。 1.3 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.4 本标准可能涉及危险材料、操作和设备。 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 ====意义和用途====== 5.1 本试验的试验温度与拟使用沥青结合料的地理区域内路面所经历的温度有关。 5.2 复剪切模量是沥青结合料在荷载作用下变形的刚度或阻力的指标。 复剪切模量和相位角定义了线性粘弹性区域内沥青结合料的剪切变形阻力。复模量和相位角用于根据规范计算性能相关标准 D6373 或AASHTO标准M320。

1.1 This test method covers the determination of the dynamic shear modulus and phase angle of asphalt binders when tested in dynamic (oscillatory) shear using parallel plate geometry. It is applicable to asphalt binders having dynamic shear modulus values in the range from 100 Pa to 10 MPa. This range in modulus is typically obtained between 4 and 88°C at 10 rad/s. This test method is intended for determining the linear viscoelastic properties of asphalt binders as required for specification testing and is not intended as a comprehensive procedure for the full characterization of the viscoelastic properties of asphalt binders. 1.2 This standard is appropriate for unaged materials, material aged in accordance with Test Method D2872 , material aged in accordance with Practice D6521 , or material aged in accordance with both Test Method D2872 and Practice D6521 . This procedure is limited to asphalt binders that contain particles with largest dimension less than 250 μm. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== 5.1 The test temperature for this test is related to the temperature experienced by the pavement in the geographical area for which the asphalt binder is intended to be used. 5.2 The complex shear modulus is an indicator of the stiffness or resistance of asphalt binder to deformation under load. The complex shear modulus and the phase angle define the resistance to shear deformation of the asphalt binder in the linear viscoelastic region. The complex modulus and the phase angle are used to calculate performance-related criteria in accordance with Specification D6373 or AASHTO Standard M320.