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首页> 美国政府科技报告 >Expedient Surfacing and Drainage of Roads, Streets, and Parking and Storage Areas in Theater of Operations. Report 2. Tests Conducted Between August 1968 and July 1969
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Expedient Surfacing and Drainage of Roads, Streets, and Parking and Storage Areas in Theater of Operations. Report 2. Tests Conducted Between August 1968 and July 1969

机译：运营剧院道路，街道，停车场和储存区的便利堆焊和排水。报告2. 1968年8月至1969年7月期间进行的测试

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Engineering tests were conducted on a test road covered with an asphalt-impregnated polypropylene membrane to determine the effectiveness of the combined materials as a dustproof, waterproof wearing surface over adequate-strength subgrades and as an encasing membrane used to form a membrane- enveloped soil layer (MESL) in areas where high water tables exist. The polypropylene- asphalt membrane was installed on the test road, exposed to varying climatological conditions prevalent in the Vicksburg area, and subjected to mixed pneumatic-tired traffic of military vehicles. Vehicles used for testing were a 2-1/2 ton, 6 x 6 cargo or dump truck and a 5-ton, 6 x 6 cargo or dump truck, both carrying maximum off-highway loads and having appropriate tire pressures. It was concluded from the test results that polypropylene-asphalt membrane will furnish a waterproof, dustproof wearing surface to any otherwise satisfactory subgrade for periods in excess of 2 years and will sustain many thousands of repetitions of pneumatic-tired convoy traffic without suffering significant damage, and MESL CONSTRUCTION IS EFFECTIVE IN PROVIDING A STABLE ROADWAY IN AREAS HAVING POOR DRAINAGE AND HIGH WATER TABLES. (Author, modified-PL)

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