Measuring and testing – Specimen stress or strain – or testing by stress or strain... – By loading of specimen
Patent
1996-08-13
1997-08-19
Dombroske, George M.
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
By loading of specimen
73790, G01N 300, G01N 1100
Patent
active
056591403
ABSTRACT:
An apparatus for testing pavement test samples for for surface wear, including rutting, stripping and fatigue, is disclosed. The testing machine includes a testing chamber and a sample tray that is adapted for holding one or more test samples. The machine also includes a hose for each test sample to be tested. Each hose is disposed above a test sample in the sample tray in such fashion that the hose may be deflected to contact a least a substantial portion of the sample. A mechanism is also provided for pumping a fluid into each hose and for maintaining fluid pressure within the hose. The testing machine also includes a testing wheel assembly that is disposed above the hose assembly within the chamber. The testing wheel assembly is adapted for reciprocating movement on a track and includes a loading wheel for each hose. A loading cylinder is also provided for each loading wheel, with cylinder is adapted for applying a downwardly directed load to such wheel as the loading wheel moves back and forth along a hose that is in contact with sample beneath. The testing machine also includes an immersion pan into which a sample tray may be placed in the chamber, and a mechnism is provided for filling the immersion pan with water. Also provided is a temperature controlling mechanism for controlling temperature in the testing chamber.
REFERENCES:
patent: 4942768 (1990-07-01), McRae
patent: 4958306 (1990-09-01), Powell et al.
patent: 5248200 (1993-09-01), Walsh
"Development and Use of Georgia Loaded Wheel Tester"by Ronald Collins, Donald Watson, and Bruce Campbell (no date).
"Development of a Simplified Test Method to Predict Rutting Characteristics of Asphalt Mixes" by James S. Lai (Georgia Institute of Technology); Prepared for Department of Transportation State of Georgia; Jul., 1986.
"Evaluation of Rutting Characteristics of Asphalt Mixes Using Loaded-Wheel Tester" by James S. Lai (Georgia Institute of Technology); Prepared for Georgia Department of Transportation Office of Materials and Research; Dec., 1986.
"Evaluation of The Effect of Gradation of Aggregate on Rutting Characteristics of Asphalt Mixes" by James S. Lai (Georgia Institute of Technology); Prepared for Georgia Department of Transportation Office of Materials & Research; Aug., 1988.
"Development of A Laboratory Rutting Resistance Testing Method for Asphalt Mixes" by James S. Lai (Georgia Institute of Technology); Prepared for Georgia Department of Transportation Office of Materials and Research; Aug., 1989.
Edwards, Jr. M. Earl
Jakob Herbert E.
Dombroske George M.
Noori Max H.
Pavement Technology, Inc.
LandOfFree
Testing machine for pavement samples does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Testing machine for pavement samples, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Testing machine for pavement samples will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1106467