A Study of Variables Associated with Wheel Spin-Down and Hydroplaning
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1972-03-01
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Abstract:An evaluation of the wet weather properties of a portland cement concrete pavement and a bituminous surface treatment is presented. The study uses wheel spin-down as the criterion and considers the effect of water depth, tire inflation pressure, tire tread depth and wheel load. A hydroplaning trough 800 ft. long, 30 in. wide and 4 in. deep was used in obtaining the data. The results indicate that the bituminous surface treatment requires a considerably higher ground speed to cause spin-down than the concrete pavement. Further, even though a single critical speed does not exist for the range of variables selected, a reduction of speed to 50 mph is recommended for any section of highway where water can accumulate to depths of 0.1 inch or more during wet weather periods.
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Main Document Checksum:urn:sha-512:9f13b5f1bf26015d3400e7b4ae1f027d2962c1ae839dc865da331cb46c50568249a12e301052e2b64efd67fe930be8ff41461b5cf59868bc80f7fbda225929ee
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