Fuminori YAMAZAKI
Study on Evaluation Method of Crack Resistance for Asphalt Concrete Using Indirect Tensile Test
Osamu TAKAHASHI
The direct tension test and the static bending test are used as a crack susceptibility evaluation for asphalt mixtures at the research level in our country.
These evaluation tests require the exclusive specimens, which would be prepared separately from the mix design. It takes a lot of time and money.
This study has focused on the indirect tensile test as another method for crack resistance evaluation. Specimens for the mix design can be diverted to the indirect tensile test, and not only test procedures but also test preparations for the indirect tensile test are more simple and easy.
This study discussed that tensile strain at failure would be estimated from a total displacement in the indirect tensile direction of the specimen by a regression analysis.
As the result, it was concluded that the indirect tensile test with the regression analysis can estimate an approximate value of tensile strain at failure, not an accurate value. The study confirmed that the indirect tensile test is a promising method to relatively evaluate crack resistance for asphalt concrete.
Please use "previous botton" to return the previous page