AIRFIELD LAYOUT AND DESIGN

UFC 3-260-11FA

25 May 2005

have sulfate concentrations below 0.05 percent (by weight)

to allow use of recycled concrete as a project material.

d.

Groundwater collected from borings within the project site

must be tested in accordance with ASTM D 516, Standard Test

Method for Sulfate Ion in Water, to determine the presence

of sulfates. Groundwater must have a sulfate concentration

below 75 ppm to allow use of recycled concrete as a project

material.

e.

If pavement to be recycled has experienced D-cracking, the

maximum recycled aggregate size must pass a 3/4" sieve.

f.

Recycled concrete aggregates proposed for use shall be

evaluated and tested by the Contractor for alkali-aggregate

reactivity in accordance with ASTM C 1260. Test results

shall have a measured expansion equal to or less than 0.08

percent at 16 days after casting. Should the test data

indicate an expansion greater than 0.08 percent, the

recycled concrete aggregate shall be rejected.

1.13.4

Reclaimed Asphalt Pavement (RAP)

Prior approval is required from USACE-TSC, Air Force

MAJCOM, or Navy EFD for the use of Reclaimed Asphalt

Pavement in surface course. Delete the term "surface

course" unless approval is obtained.

RAP can be used in hot plant-mixed asphalt mixtures for airfield

pavement bases and intermediate courses [and surface course]. The

maximum allowable content, by weight, of RAP in the asphalt mix

is 40 percent. Use of RAP shall conform to UFC 3-250-03.

1.13.5

Uniformity

General: Recycled aggregates used in pavement mixes should be

from a single source for consistency. If materials from

different pavements and structures are to be recycled, separate

quality testing and design mixes are required for each material

source. Stockpiles of recycled aggregates from different sources

shall be separated.

1.14

AIRFIELD LAYOUT AND DESIGN

The configuration, grades, slopes, imaginary surfaces, and aircraft

clearances for airfield facilities shall meet the requirements of the

RFP drawings, these specifications, conceptual design analysis, and UFC

3-260-01, Airfield and Heliport Planning and Design.

1.15

AIRFIELD PAVEMENTS

1.15.1

References

Normally DOD criteria will apply to airfield paving

projects. Exceptions include projects on joint use

airfields and when DOD criteria is nonexistent for

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