Astm D 3497 – 79 (Reapproved 2003 pdf free download

Standard Test Method for
Dynamic Modulus of Asphalt Mixtures1

This standard is issued under the fixed designation D 3497; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of the last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.

1. Scope

1.1 This test method covers procedures for preparing and
testing asphalt mixtures to determine dynamic modulus values.
The procedure described covers a range of both temperature
and loading frequency. The minimum recommended test series
consists of testing at 41, 77, and 104°F (5, 25, and 40°C) at
loading frequencies of 1, 4, and 16 Hz for each temperature.

1.2 This method is applicable to asphalt paving mixtures
similar to mixes 3A, 4A, 5A, 6A, and 7A, as defined by
Specification D 3515.

1.3 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.

2. Referenced Documents

2.1 ASTM Standards: 2
C 617 Practice for Capping Cylindrical Concrete Specimens
D 3496 Method for Preparation of Bituminous Mixture
Specimens for Dynamic Modulus Testing
D 3515 Specification for Hot-Mixed, Hot-Laid Bituminous
Paving Mixtures

3. Terminology

3.1 Definitions:

3.1.1 dynamic modulus—the absolute value of the complex
modulus that defines the elastic properties of a linear viscoelastic material subjected to a sinusoidal loading, ? E*?

3.1.2 complex modulus—a complex number that defines the
relationship between stress and strain for a linear viscoelastic
material, E*.

3.1.3 linear material—a material whose stress to strain ratio
is independent of the loading stress applied.

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