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How to Repair Broken Concrete Steps with QUIKRETE


Repairing Concrete Edges and Corners.
Repairing broken concrete edges and corners requires a special fast-setting
repair material that can be molded and shaped to match the contour of the
surrounding concrete, without sagging. QUIKRETE Quick-Setting Cement, along with QUIKRETE Acrylic Fortifier, is designed specifically to repair broken edges and
corners on concrete steps, curbs, slabs and walls, quickly and permanently,
without the use of forms. The first step in achieving a successful concrete
repair is proper surface preparation. A solid, clean surface is necessary so that
the repair material can permanently bond to the damaged area. It is extremely important to remove any
unsound or flaking concrete from the repair area. This can be done using a hammer and
chisel or with a masonry grinding disc and a portable drill. When working with
cement-based products, always wear eye protection and waterproof gloves. Once the unsound concrete is removed, the
surface should be cleaned of any loose material, dirt, oil and grease, prior to
the application of quick-setting cement. Using QUIKRETE Concrete and Asphalt
Cleaner, scrub and clean the surface of the repair area with a stiff bristle
brush. Concrete and Asphalt cleaner is a concentrated detergent that is effective
and safe for use on any concrete, asphalt, paver, brick, masonry and stone surface. It can be used in full strength for heavy duty cleaning or diluted for
general cleaning. Thoroughly rinse the repair area after cleaning. Mix
quick-setting cement at about five parts cement to one part acrylic fortifier.
QUIKRETE Acrylic Fortifier is a polymer resin that improves the bond strength of the
new quick-setting cement material to the existing concrete. Using a margin trowel,
mix the quick-setting cement for three to five minutes, until a lump free
consistency is achieved. If the mix is too wet, add additional quick-setting
cement and mix thoroughly. If the mix is too dry, add small amounts of
acrylic fortifier, sparingly. QUIKRETE Quick-Setting Cement is a rapid setting
material, so mix only as much as can be used in about five minutes. It is important not to add more water or
acrylic fortifier after the material has begun to set. If you do, this will weaken the mix
and can cause shrinkage cracking. Before applying the quick-setting cement, dampen
the repair area with water. Enough water should be used to saturate the surface.
Although, any standing water should be removed. Quick-setting cement should be
built up in layers using a margin trowel. The first layer should be pressed into
the repair area using firm trowel pressure. Continue to build and sculpt
quick setting cement up, so the surface of the repair is above
the surrounding concrete. In about five to ten minutes, when the patch has become
thumbprint hard, use the edge of the margin trowel to mold and shape the
repair to match the contour of the surrounding concrete. No special curing is required under
normal conditions. Allthough, in temperatures over 90 degrees, keep the
patch damp for 24 to 48 hours with a fine water mist.

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