Airfield Flexible Pavement - Mobilization Construction -

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Extra resources for Airfield Flexible Pavement - Mobilization Construction - Engineering and Design (EM 1110-3-141)

Example text

Compact surface of overrun areas and shoulder areas, except shoulders adjacent to aprons and hardstands, to 90 percent maximum density for a depth of 6 inches. Stabilize the shoulders for dust and erosion control against blast of motor blades. Provide vegetative cover, anchored mulch, coarse graded aggregate, liquid palliati~es, or a double bituminous surface treatment. When a double bituminous surface treatment is specified, provide a 4-inch base of 40 CBR material or better. 7-19 EM 1110-3-141 9 Apr 84 CHAPTER 8 SPECIAL SURFACE TREATMENTS AND SPECIAL DETAILS 8-1.

The thickness of the weaJ;"ing course should not exceed 2 inches compacted thickness and each intermediate course layer should not exceed 4 inches. The wearing course mix may be used for both courses. b. Bituminous base course. The maximum lift of a bituminous base course should not exceed 6 inches. 6-10 EM 1110-3-141 9 Apr 84 6-6. Bituminous spray coats. a. Prime coats. following: Prime coats should be applied to accomplish the (1) To seal surface of base course in areas where rain may be expected prior to placement of the asphalt surface.

200 0-10 0-10 0-10 5-6. Base course compaction. 100 percent maximwn density. Compact the base course to a minimwn of 5-7. Proof rolling. In addition to compacting the base course to the required density, proof-rolling on the surfaces of completed base courses is required. The proof roller is a heavy rubber-tired roller having four tires, each loaded to 30,000 pounds or more and inflated to at least 150 psi. A coverage is the application of one tire print over each point in the surface. 5-4 EM 111 0-3-14 1 9 Apr 84 CHAPTER 6 BITUMINOUS MATERIALS COURSES 6-1.

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