Figure 7-55.-Repairing concrete with dry-packed mortar.
Where absorptive form lining has been used, the patch
can be made to match the rest of the surface by
pressing a piece of form lining against the fresh patch.
View A of figure 7-56 shows an incorrectly
installed patch. Feathered edges around a patch lack
sufficient strength and will eventually break down.
View B of the figure shows a correctly installed patch.
The chipped area should be at least 1-inch deep with
the edges at right angles to the surface. The correct
method of screeding a patch is shown in view C. The
new concrete should project slightly above the surface
of the old concrete. It should be allowed to stiffen and
then troweled and finished to match the adjoining
RECOMMENDED READING LIST
Although the following references were
current when this TRAMAN was published,
Figure 7-56.-Patching concrete.
their continued currency cannot be assured.
You therefore need to ensure that you are
studying the latest version.
Concrete and Masonry, FM 5-742, Headquarters,
Department of the Army, Washington, D.C., 1985.
Concrete Formwork, Keel, Leonard, American
Technical Publishers, Homewood, Ill., 1988.
Steelworker 3 & 2, NAVEDTRA 10653-G, Naval
Education and Training Program Management
Support Activity, Pensacola, Fla., 1988.