Technical Specifications

CONCRETE BLOCK
by
Curing Information
Warranty
Refer to www.midwestmanufacturing.com for the most current technical data, MSDS, and guide specications.
Precautions
Important! Read before using.
• This product contains portland cement. Contact with
freshly mixed product can cause severe burns. Avoid
direct contact with eyes.
• If this product should contact eyes, immediately
ush with water for at least 15 minutes and consult
a physician. For skin exposure, wash promptly with
plenty of soap and water, and remove soaked clothing
promptly. If this product burns your skin, see a
physician immediately.
• This product may contain silica. Silica dust, if inhaled,
may cause respiratory or other health problems.
Prolonged inhalation may cause delayed lung injury,
including silicosis and possibly cancer. A N95 approved
dust mask, eye protection, rubber boots, and gloves are
recommended when using this product.
Midwest Manufacturing guarantees this product against
manufacturing defects when used according to the
instructions provided. This guarantee will be honored
with proof of purchase. Midwest Manufacturing does not
guarantee this product if used for any purpose other than
the general purpose for which it is intended. Midwest
Manufacturing’s obligation is limited to replacement of
defective product only. Midwest Manufacturing will not be
responsible for lost time, replacement labor, nor any other
commensurate costs associated with replacement.
Sand Mix can be broom nished or hand trowel nished.
Power nishing is not recommended. Special nishing,
such as stamping, adding color or staining, are also
acceptable.
Finishing
• Proper curing increases the strength and durability of
concrete. Apply concrete sealer with a garden sprayer,
brush, or roller after nishing. Do this when the
concrete surface has hardened but is still damp, not
wet.
• Concrete can also be moist cured by keeping the
surface wet with a lawn sprinkler or by covering the
concrete surface with plastic sheeting. Curing should
continue for a period of ve days in warm weather at 70
degrees F (21 degrees C or higher) or seven days in cold
weather at 50 degrees F to 70 degrees F (10 degrees C
to 20 degrees C). Protect concrete from freezing for at
least 48 hours. Plastic sheeting and insulation blankets
should be used if temperatures are expected to fall
below 32 degrees F (0 degrees C).
Keep out of reach of children
Curing Methods
• Other methods of providing proper curing include
covering the surface with wet burlap, keeping the
surface wet with a lawn sprinkler, and covering the
surface with plastic sheeting or waterproof paper to
prevent moisture loss.
• If burlap is used, it should be free of chemicals that
could weaken or discolor the concrete. New burlap
should be washed before use. Place it when the
concrete is hard enough to withstand surface damage
and sprinkle it periodically to keep the concrete surface
continuously moist.
Application
• Using 2x4’s and stakes, construct a form around the
old sidewalk or slab. Use a level to make sure that the
forms are set at the correct height and that there is an
adequate slope for drainage.
• If the area to be resurfaced requires topping from 1" –
2" (25.4 – 51 mm) in thickness, rst coat the damaged
area with a Concrete Bonding Adhesive.
• Allow the Bonding Adhesive to dry before proceeding.
Bonding Adhesive should not be used when Sand Mix
contains Acrylic Fortier.
• Place the Sand Mix into the damaged area and trowel
the surface smooth using a steel nishing trowel, or
wood oat.
• Edge using a concrete edging tool if desired.
• If the topping is placed over an existing concrete joint,
it is important to tool a joint into the Sand Mix directly
over the existing joint.
• Use a trowel or jointer to form the joint at least half the
depth of patch.
• Water curing with lawn sprinklers, nozzles or soaking
hoses must be continuous to prevent interruption of
the curing process.
• Curing with plastic sheets is convenient. They must be
laid at, thoroughly sealed at the joints, and anchored
carefully along edges.