Measuring and testing – Specimen stress or strain – or testing by stress or strain... – By loading of specimen
Patent
1996-04-18
1999-10-19
Raevis, Robert
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
By loading of specimen
73146, G01M 1702
Patent
active
059692618
ABSTRACT:
An apparatus and method for testing rutting susceptibility of test specimens. The apparatus includes a specimen holder having cavities for receiving one or more test specimens having an exposed surface for testing. A load bearing surface is positioned above the specimens to prevent friction from effecting the rutting analysis. A load device including at least one loading wheel is positioned adjacent the specimen holder wherein the loading wheels matingly engage the load bearing device. A motive sources provides relative rotational movement between the specimen holder and the loading wheels whereby a load is repeatedly applied to the test specimens under a constant velocity. The method includes testing rutting susceptibility of test specimens by providing a rotational load thereupon whereby the load reflects a linear or constant load across the predetermined path of travel of the loading wheels over the exposed surface of the test specimens.
REFERENCES:
patent: 5641901 (1997-06-01), Powell
CPN International brochure featuring Rutmeter, 2 pages (date unknown).
Tim Aschenbrener, "Evaluation of the Hamburg Wheel Tracking Device to Predict Moisture Damage in Hot Mix Asphalt", Transporation Research Board, Paper No. 950475, Jan. 1995.
James S. Lai and Thay-Ming Lee, "Use of a Loaded-Wheel Testing Machine To Evaluate Rutting of Asphalt Mixes"; Transportation Research Record 1269, 116-124.
Timothy Aschenbrener, et al.; "Comparison of the Hamburg Wheel Tracking Device and the Environmental Conditioning System to Pavements of Known Stripping Performance", FHWA Report CDOT-DTD-R-94-1, Jan. 1994.
James S. Lai, "Development of a New Loaded Wheel Testing Machine for Evaluating Rutting of Asphalt Mixes", GDOT Research Project 9201, Sep., 1993.
Robert Collins, et al., "Development and Use of the Georgia Loaded Wheet Tester", Transportation Research Board, Paper No. 950992, Jan. 1995.
Tyler Miller, et al., "Utilizing the Georgia Loaded Wheel Tester to Predict Rutting", Transportation Research Board, Paper No. 950520, Jan. 1995.
Tim Aschenbrener and Keith Stuart, "Description of Demonstration of European Testing Equipment for Hot Mix Asphalt Pavement", FHWA Report CDOT-DTD-R-92-10, Oct., 1992.
Eagan, Jr. John T.
McAlister Donald K.
Raevis Robert
Troxler Electronics Laboratories, Inc.
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