25 May 2005
Field formed cold applied
Field formed silicone
Sealant Use. The selection of sealant type is based upon (a) life cycle
cost analysis, or (b) user preference because of such considerations as experience with
sealants used on other airfield pavements. The Air Force prefers preformed sealants.
However, the USACE-TSC, Air Force MAJCOM, or Navy EFD shall select the
appropriate sealant to be used for the project and the sealant requirement should be
included in the RFP.
3-188.8.131.52 If poured sealant is used, apron sealants should be fuel resistant and
sealants in the end 300 m (1000 ft) of runways should be heat and blast resistant.
3-184.108.40.206 Rubber removal operations will damage 200 E Silicone Sealant, which
should not be used on runway areas subject to rubber build-up.
Recycling. The type and extent of recycling shall be determined by the
USACE-TSC, Air Force MAJCOM, or Navy EFD with the extent of use, limitations, and
requirements stated in the RFP. If reclaimed concrete aggregates are to be used, the
evaluation of sulfates and D-cracking is required.
Rigid Pavement Reclaimed Concrete Aggregate. Rigid pavement
reclaimed concrete aggregate (RCA) can be used for:
Portland cement econocrete, cement-treated base, and aggregate
bases (AFM 88-6, Chapter 6)
Aggregate for hot-mix asphalt mixtures (UFC 3-250-03)
3-220.127.116.11 Asphalt Pavement. Reclaimed asphalt pavement (RAP) is used in three
types of recycled pavement (UFC 3-250-03):
Surface Recycling: Hot or cold in-place recycling of the top 6.35 to
38.1 mm (.25 to 1.5 in.) of pavement. Not used for airfield pavement
Cold-Mix Recycling: Mixing RAP with virgin materials in a cold-mix
Hot-Mix Recycling: Mixing RAP with virgin materials in a hot-mix
Hot-mixed RAP can be used for airfield pavement bases and intermediate courses.
RAP can be used in HMA for a surface course with prior approval from Air Force
MAJCOM, USACE-TCS, or Navy EFD (UFC 3-250-03).