Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Evaluation of Asphalt Stripping Tests in Oregon
As part of the continuing effort to establish a standard for evaluating moisture susceptibility of asphalt concrete design mixes, the study evaluated and compared four tests methods by testing 15 diverse sense-graded mix designs during Oregon's 1988 construction season. The Index of Retained Strength (IRS), AASHTO T-165, and the Index of Retained Modulus of Resiliency (IRMR). OSHD TM-315, were the existing ODOT tests compared with the Root-Tunnicliff, NCHRP 274, and the Modified Lottman, AASHTO T-283. None of the four tests predicted the same degree of asphalt stripping across the range of asphalt and aggregate tested. Based on the results of the study, the IRS Test Method continues to be considered a valid and useful stripping test. The IRMR test appears to have the greatest potential for future improvement due to superior repeatability and apparent greater severity of the test. As a result of the test findings, there still is a need for test equipment and procedure improvements to increase the accuracy and precision of the procedures and to improve the correlation between stripping tests.
Evaluation of Asphalt Stripping Tests in Oregon
As part of the continuing effort to establish a standard for evaluating moisture susceptibility of asphalt concrete design mixes, the study evaluated and compared four tests methods by testing 15 diverse sense-graded mix designs during Oregon's 1988 construction season. The Index of Retained Strength (IRS), AASHTO T-165, and the Index of Retained Modulus of Resiliency (IRMR). OSHD TM-315, were the existing ODOT tests compared with the Root-Tunnicliff, NCHRP 274, and the Modified Lottman, AASHTO T-283. None of the four tests predicted the same degree of asphalt stripping across the range of asphalt and aggregate tested. Based on the results of the study, the IRS Test Method continues to be considered a valid and useful stripping test. The IRMR test appears to have the greatest potential for future improvement due to superior repeatability and apparent greater severity of the test. As a result of the test findings, there still is a need for test equipment and procedure improvements to increase the accuracy and precision of the procedures and to improve the correlation between stripping tests.
Evaluation of Asphalt Stripping Tests in Oregon
L. L. Dickinson (Autor:in) / A. T. Blachly (Autor:in) / A. J. George (Autor:in)
1990
86 pages
Report
Keine Angabe
Englisch
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