A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Direct Tension Test Experiments
The Performance Based Asphalt Aggregate mixture specification, a primary product of the Strategic Highway Research Program (SHRP) Asphalt Research Program, is based upon the measurement of fundamental material properties which can be used in fundamentally based performance prediction models. Two potential properties identified were tensile creep and tensile strength measured with a Direct Tension Test (DTT). A key question to be answered prior to development of a DTT was the implementability in a production laboratory. The proposed work plan of The Asphalt Institute (TAI) was to determine the feasibility of running the DTT as a routine test suitable for Highway Agencies. If the test was feasible for implementation, it would be identified as a primary candidate test in contract research plans. Additionally, the correlation between DTT and the Diametral Indirect Tensile Test was also proposed. DTT evaluation for several SHRP asphalt mixtures was carried out at TAI during 1991 and 1992. As a result of this work, and research carried out by other SHRP contractors, the DTT has been eliminated from consideration for mixture specification purposes. The objective of this report is to document experimental results from TAI which lead to the elimination of the direct tension test from consideration for the proposed performance based specification for asphalt mixtures. (Copyright (c) 1993 National Academy of Sciences.)
Direct Tension Test Experiments
The Performance Based Asphalt Aggregate mixture specification, a primary product of the Strategic Highway Research Program (SHRP) Asphalt Research Program, is based upon the measurement of fundamental material properties which can be used in fundamentally based performance prediction models. Two potential properties identified were tensile creep and tensile strength measured with a Direct Tension Test (DTT). A key question to be answered prior to development of a DTT was the implementability in a production laboratory. The proposed work plan of The Asphalt Institute (TAI) was to determine the feasibility of running the DTT as a routine test suitable for Highway Agencies. If the test was feasible for implementation, it would be identified as a primary candidate test in contract research plans. Additionally, the correlation between DTT and the Diametral Indirect Tensile Test was also proposed. DTT evaluation for several SHRP asphalt mixtures was carried out at TAI during 1991 and 1992. As a result of this work, and research carried out by other SHRP contractors, the DTT has been eliminated from consideration for mixture specification purposes. The objective of this report is to document experimental results from TAI which lead to the elimination of the direct tension test from consideration for the proposed performance based specification for asphalt mixtures. (Copyright (c) 1993 National Academy of Sciences.)
Direct Tension Test Experiments
P. E. Bolzan (author) / G. Huber (author)
1993
43 pages
Report
No indication
English
Construction Equipment, Materials, & Supplies , Highway Engineering , Transportation & Traffic Planning , Transportation , Road Transportation , Tensile tests , Asphalts , Specifications , Highway design , Asphalt pavements , Creep properties , Tensile stress , Tensile strength , Deformation , Loads(Forces) , Mechanical properties
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