Pavement Maintenance - Cornell Local Roads Program - Cornell ...

Table 8 - Proprietary cold patches on NYS OGS bids, 2005
Patch name Producer or manufacturer
BOND X Seaboard Asphalt Products, Inc.
DURO PATCH Gorman Bros.
HYPERPATCH Vestal Asphalt, Inc.
I.A.R. I.M.U.S., Inc.
MAC-V Midland Asphalt Corp.
MC-400P Koch Materials Co.
NORJOHN SPC Norjohn Ltd.
OPTIMIX Optimix, Inc.
PARCO PATCH Peckham Materials Corp.
PERFORMIX Seaboard Asphalt Products
QPR QPR, A Division Of Lafarge N.A.
S-K MOD Suit-Kote Corp.
SYLCRETE EV Sylcrete Corp.
TOP MIX Tech Mix
UPM Unique Paving Materials
7 - Patching
There are differences between the various proprietary cold patch materials. Some work better in
cold weather, some are easier to finish, some are more forgiving under traffic. When choosing
which material to use, price is not usually a significant factor. All of the proprietary materials are
similar in price. The one you should use is the one which will work properly in your conditions.
Repair technique
Cold patch should be compacted with a roller or a plate tamper, but in practice it is rarely done.
Speed of repair is the primary reason for this, which has earned the technique the name “Throw
and Go.” The problem with Throw and Go is that the lack of compaction causes the material to
fail very quickly. Patches placed one day are often gone the next.
A more effective technique is “Throw and Roll.” The only difference is that the truck is used to
compact the mix. Truck tires do a fairly good job of compacting the mix. With compaction, more
patches will survive the season. The steps of Throw and Roll are listed on the next page.
The production speed of Throw and Roll is not much less than Throw and Go. Rolling over the
patch typically increases the survival rate (the number of patches that will survive the season)
from 10 to 25 percent . Using a proprietary mix, as opposed to a standard cold patch, can double
the survival rate to 50 percent.
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