ETL 1110-1-177
31 Dec 96
pavements. These joints are constructed by saw cutting to the
bottom of the RMP layer once the RMP material has sufficiently
cured. The joint is then filled with a sealant material suitable
for the particular site conditions.
(3) Mix design methodologies for RMP have not been
previously documented. All RMP military construction projects to
date have had Government provided mix designs, provided by the
U.S. Army Engineer Waterways Experiment Station, CEWES-GP,
Vicksburg, MS, 39180. The mix design method found in Appendix B
provides suitable job-mix formulations for both the open-graded
asphalt concrete and grout materials when designing an RMP. This
mix design method also contains appropriate procedures for
quality control testing of open-graded AC voids and grout
viscosity.
d. Applications. RMP may be used in new pavement
construction or in the rehabilitation of existing pavement
structures. A new RMP surfacing may be placed as an overlay over
existing flexible or rigid pavements. RMP is typically used as a
low-cost alternative to a PCC rigid pavement or as a means of
improving the pavement performance over an AC surfaced flexible
pavement. Field experience indicates that RMP may be used in
practically any environmental conditions.
(1) In general, the RMP is best suited for pavements that
are subjected to low-speed traffic that is channelized or
abrasive by nature. Pavement areas with heavy static point loads
and heavy fuel spillage are also ideal RMP application
candidates. The practical limit for the surface slope of an RMP
section is 2 percent. Pavement slopes up to 5 percent can be
constructed, but excess hand work and grout overruns are to be
expected with slopes greater than 2 percent.
(2) The RMP process has been used in a variety of
applications on the international market, including airport and
vehicular pavements, industrial and warehouse floorings, fuel
depots and commercial gasoline stations, city plazas and malls,
railway stations, and port facilities. Since its first
commercial application in the United States in 1987, RMP has been
used mostly on airport and airfield pavement projects. These
applications have included taxiways, aprons, equipment and fuel
storage areas, and warehouse parking lots. As of September 1996,
there were 17 known RMP project sites in the United States,
totaling over 180,000 sq m (216,000 sq yd) of pavement area.
e. Costs. The cost of a 50-mm-thick (2-in.) RMP layer is
currently about .60 to 19.20 per sq m ( to 16 per sq yd) as
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