15 March 2001
increased, with minimal mixing and an accelerator added. The concrete placement techniques
should follow standard procedures.
4.12.1. Extra attention should be given to ensure that the concrete is vibrated well around the
edges and beneath the reinforcement. Where new concrete is to be bonded, all exposed
concrete faces should be cleaned by sandblasting. Temperatures for the concrete placement
should be between 40 and 90 degrees Fahrenheit (4 and 32 degrees Celsius).
4.12.2. Rapid-set proprietary cementitious materials that attain sufficient strength for traffic in as
little as 4 hours are available. Rapid-set proprietary patching materials should be used in
compliance with the manufacturer's recommendations. This includes bonding, placing, curing,
time required before opening to traffic, and temperature ranges.
4.12.3. If cuts are made on each side of a joint and load transfer is required for full-depth repairs,
the repair must be done in two pours as described in CEGS 02753 to allow installation of load
4.13. Concrete Finishing and Texturing. Finishing techniques should follow standard
procedures. For repairs less than 12 feet (3.7 meters) in length, the surface of the concrete
should be struck off with the screed parallel to the centerline of the pavement. For repairs more
than 12 feet (3.7 meters) in length, the surface should be struck off with the screed perpendicular
to the centerline of the pavement. Extra attention should be given to ensure that the concrete is
not overfinished. Before the concrete becomes nonplastic, the surface should be given a burlap
drag or broom finish to approximately match the surface finish of the existing adjacent concrete
pavement, unless a grinding operation is to follow.
4.14. Curing. There are many ways to cure concrete. Wet burlap (with or without sand),
impervious paper, pigmented curing membranes, and ponding or constant spraying can be used