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Title: A Study of the Effects of Wet Surface Soil Conditions on the Performance of a Single Pneumatic-Tired Wheel
Authors: Smith, Jerry L.
Mobility and Environmental Systems Laboratory (U.S.)
Keywords: Trafficability
Publisher: U.S. Army Engineer Waterways Experiment Station
Series/Report no.: Technical Report (U.S. Army Engineer Waterways Experiment Station);no. 3-703
Abstract: Tests were conducted with a powered wheel to determine the effects of wet surface soil conditions on the performance of pneumatic tires. Surface soil conditions were of three types: (a) unflooded, (b) flooded and undrained, and (c) flooded and drained. Tests were conducted on fat clay and silt. All test tires were 6.00-16, 4-PR. Four tire surfaces, or tread patterns, were tested: a smooth tire (i.e. no tread), a directional tread, a nondirectional tread, and a smooth tire with traction aid. It was found that for a given wheel load the loss of pull (used to express performance) due to flooding was essentially constant for each tread pattern. The treaded tires and the smooth tire with traction aid performed better than the smooth tire in flooded soil, but there was no significant difference between the tread patterns other than smooth. In the unflooded soil, the tread pattern made a considerable difference in performance. Peak performance usually was attained at an optimum load, regardless of tread pattern or soil condition. Pull remained unchanged through five passes in the unflooded soil, increased with each pass in the flooded-and-drained soil, and decreased with traffic in the flooded-and-undrained soil. Magnitude of pull was dependent to some extent on duration of flooding. Lowest pulls due to slipperiness were attained when the flooding period was very brief and the soil strength high.
Description: Technical Report
Gov't Doc #: Technical Report No. 3-703
Rights: Approved for public release; distribution is unlimited
Size: 99 pgs / 6.331Mb
Types of Materials: PDF/A
Appears in Collections:Technical Report

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