Read Online or Download Airfield Flexible Pavement - Mobilization Construction - Engineering and Design (EM 1110-3-141) PDF
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Additional resources for Airfield Flexible Pavement - Mobilization Construction - Engineering and Design (EM 1110-3-141)
Emulsions do not penetrate as do liquid asphalts and may require a sand seal to prevent tracking. 1 gallon per square yard. b. Tack coats. Tack coats are required on existing pavements to insure a bond with the new overlying bituminous concrete course. Tack coats may not be required between new layers of pavement where the upper layer is immediately constructed as the lower layer is completed. However, tack coats should be used on layers where construction is halted and placement of the overlaying layer is delayed.
FLEXIBLE PAVEMENT DESIGN CURVE~ AIR FORCE SHORTFIELD PAVEMENT, TYPE A TRAFFIC AREAS AND OVERRUNS 7-12 EM 1110-3-141 9 Apr 84 determined. These thicknesses together with the m1n1mum thicknesses for surface and base courses provide the basis for pavement section design. Use table 5-2 for minimum thickness of base and surface cobrse. See table 7-2 for an outline of the flexible pavement thickness design procedure. In addition, consider the following: a. CBR values less than 3. Normally sites which include large areas of the natural subgrade with CBR valu~s of less than 3 are not considered adequate for airfield construction.
In regions where the annual precipitation is less than 15 inches and the water table (including perched water table) will be at least 15 feet below the finished pavement surface, the danger of high moisture content in the subgrade is reduced. Where in-place tests on similar construction in these regions indicate that the water content of the subgrade will not increase above the optimum, the total pavement thickness, as determined by CBR tests on soaked samples, may be reduced by as much as 20 percent.