1.1 本试验方法包括在动态剪切流变仪（DSR）上使用扭转矩形几何形状测定沥青混合料的复剪切模量。适用于复合剪切模量值大于1×10的沥青混合料 4. 当在10°C至76°C的温度范围内，频率为0.01至25 Hz，应变为0.001时，为Pa % 至0.1 %. 复剪切模量的测定通常在20°C至70°C、0.01%应变、10个离散频率值（涵盖0.01至10 Hz）下进行。根据这些数据，可以根据需要生成温度或频率主曲线。本试验方法旨在根据沥青混合料生产的规范测试或质量控制要求，测定沥青混合料的复合剪切模量。 1.2 本试验方法适用于实验室制备和压实的混合物、现场生产和实验室压实的混合物或现场芯样，无论粘合剂类型或等级，也无论混合物中是否使用RAP。由于受试样品的几何形状，本试验方法不适用于开级配或SMA混合料。已发现其适用于最大标称骨料粒径为19 mm或更小的粗级配或细级配密实混合料。 1.3 正在确定该试验方法的实验室间再现性，并将于2012年6月或之前提供。因此，本试验方法不应用于验收或拒收采购材料。 1.4 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。 1.5 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 沥青混合料的复剪切模量是材料的基本特性。临界温度（T）下的试验结果 批评的 )用于某些混合料的规格。具有较硬粘合剂的混合物、老化混合物、细粒含量较高的混合物（材料细于75µ）和空隙率较低的混合物都倾向于比具有较低硬度粘合剂的混合物、未老化混合物、细粒含量较低和空隙率较高的混合物具有更高的复剪切模量值。 一般来说，与在相同温度下测试的具有较低复合剪切模量值的类似混合物相比，在给定使用温度下具有较高复合剪切模量值的混合物将表现出较低的永久变形值。 注2: 本标准产生的结果质量取决于执行程序的人员的能力以及所用设备的能力、校准和维护。符合实践标准的机构 D3666 通常认为能够胜任和客观的测试/采样/检查等。本标准的用户应注意遵守惯例 D3666 单独使用并不能完全保证结果的可靠性。可靠的结果取决于许多因素；遵循实践建议 D3666 或一些类似的可接受指南提供了评估和控制其中一些因素的方法。

1.1 This test method covers the determination of the complex shear modulus of bituminous mixtures using torsion rectangular geometry on a dynamic shear rheometer (DSR). It is applicable to bituminous mixtures having complex shear modulus values greater than 1 × 10 4 Pa when tested over a range of temperatures from 10°C to 76°C at frequencies of 0.01 to 25 Hz and strains of 0.001 % to 0.1 %. The determination of complex shear modulus is typically determined at 20°C to 70°C at 0.01% strain at 10 discrete frequency values covering 0.01 to 10 Hz. From these data, temperature or frequency master curves can be generated as required. This test method is intended for determining the complex shear modulus of bituminous mixtures as required for specification testing or quality control of bituminous mixture production. 1.2 This test method is appropriate for laboratory prepared and compacted mixtures, field produced and laboratory compacted mixtures or field cores, regardless of binder type or grade and regardless of whether RAP is used in the mixture. Due to the geometry of the specimens being tested this test method is not applicable to open-graded or SMA mixtures. It has been found to be appropriate for dense-graded mixtures, whether coarse- or fine-graded, with 19 mm or smaller nominal maximum aggregate size. 1.3 The between-laboratory reproducibility of this test method is being determined and will be available on or before June 2012. Therefore, this test method should not be used for acceptance or rejection of materials for purchasing purposes. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 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 complex shear modulus of bituminous mixtures is a fundamental property of the material. Test results at critical temperatures (T critical ) are used for specifications for some mixes. Mixtures with stiffer binders, aged mixtures, mixtures with higher amounts of fines (material finer than 75µ), and mixtures with lower voids all tend to have higher complex shear modulus values than mixtures with less stiff binders, unaged mixes, mixtures with low levels of fines and higher air voids. In general, mixtures with higher complex shear modulus values at a given service temperature will exhibit lower permanent deformation values than similar mixtures tested at the same temperature that have lower complex shear modulus values. Note 2: The quality of the results produced by this standard are dependent on the competence of the personnel performing the procedure and the capability, calibration, and maintenance of the equipment used. Agencies that meet the criteria of Practice D3666 are generally considered capable of competent and objective testing/sampling/inspection/etc. Users of this standard are cautioned that compliance with Practice D3666 alone does not completely assure reliable results. Reliable results depend on many factors; following the suggestions of Practice D3666 or some similar acceptable guideline provides a means of evaluating and controlling some of those factors.