ASTM D4123-82 (R1995) PDF Download

ASTM D4123-82 (R1995) is a standard test method that outlines procedures for preparing and conducting the indirect tension test on bituminous mixtures to determine their resilient modulus values. The test can be performed on laboratory-fabricated or field-recovered cores.

The procedure described in the standard covers a range of testing conditions, including different temperatures, loads, loading frequencies, and load durations. The recommended test series involves conducting tests at 41, 77, and 104°F (5, 25, and 40°C) at one or more loading frequencies, such as 0.33, 0.5, and 1.0 Hz for each temperature. This recommended test series results in a total of nine test values for one specimen, which can be used to evaluate the overall resilient behavior of the bituminous mixture.

It is important to note that the ambient laboratory temperature may be substituted for the recommended temperatures if appropriate. The standard provides detailed instructions on specimen preparation, loading procedures, and data analysis to ensure accurate and consistent results. The resilient modulus values obtained from this test method can be used to assess the performance of bituminous mixtures in terms of their ability to withstand repeated loading and maintain their structural integrity.