Technical Specifications
CONCRETE BLOCK
by
Warranty
Refer to www.midwestmanufacturing.com for the most current technical data, MSDS, and guide specications.
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.
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.
Keep out of reach of children
Read and understand the Material Safety Data Sheet
(MSDS) before using this product.
Uncured or crushed cement is an environmental hazard,
which may adversely affect sh and wildlife. Dispose of
construction debris containing cement, including empty
bags, at a permitted municipal disposal rm. Do not use
crushed concrete as a ll near an aquatic habitat.
Environmental Advisory:
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.
• 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.
Curing Information
• 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 covering the surface
with plastic sheeting. Curing should be continued for a
period of ve days in warm weather of 70 degrees F (21
degrees C) or higher, or seven days in cold weather of
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).
To determine coverage:
• Multiply Length x Width x Thickness all in feet
(meters) = cubic feet (cubic meters): divide by 0.60
cubic feet (0.016 cubic meters) per bag = Number of 80
lb (36.2 kg) bags needed for given job. Note: Convert
all measurements in inches (mm) to feet (meters). 4
inches (100 mm) = 0.33 feet (0.1 m).
Coverage