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3 Easy Steps to succeed:
Drill, Mix and
Fill
Read safety and operation instruction CAREFULLY
before use
For technical support,
call our toll-free
1-866-272-4378 or 505-874-9188 (United
States)
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Preparation
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Reinforced concrete
foundation, 3'x3'x2' |
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Temperature was 85°F.
Dexpan I was used |
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Safety glasses, dust mask, gloves, long sleeve cloth are required.
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Step 1: Drilling
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Drill holes using a
hammer drill and appropriate drill bit specific
to the rock or concrete type.
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Holes should be
drilled no further than 1 ft (30 cm) apart.
Note: In reinforced concrete recommended no more
than 8 in (20 cm) apart.
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Recommended hole
diameter is 1.5 in (3.8 cm), not to exceed 2 in
(5 cm). Drill holes should be 80-90% of the
depth, do not go through.
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Step 2: Mixing
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In a flat bottom
bucket, combine 0.4 gal (1.5 l) of water with
one 11 lbs (5 kgs) bag of Dexpan®.
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Mix well (a drill
and paddle is recommended). If mixing with a
stick or other method, make sure Dexpan®
is completely dissolved into the water. Mix to a
slurry.
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Step 3: Filling
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Clean holes before
filling. Using an air hose to remove excess dust
from drilling.
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Dexpan®
slurry should be poured into holes within 10-15
minutes after mixing. Do not fill to the top,
only fill the holes about 1/2 to 1 inch (2.5 cm)
from the top.
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Pour well mixed
Dexpan® slurry into holes. Agitating
the Dexpan® in the hole to make sure
no air is trapped in holes. Suggestion: Use a
rod or stick to poke holes.
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A grout pump might
be required to fill horizontal holes. Caps might
be needed for horizontal holes, but only
necessary to hold Dexpan® in the
holes.
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Coverage and
Cracking Time |
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Coverage:
Normally one 44 lbs (20
kgs) box of Dexpan® can fill up to 35
lineal feet (10 m) of 1.5 inches (3.8 cm) diameter
holes. You might not have to fill every hole
depending on application. |
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Cracking or Cutting Time:
Properly mixed, the
cracks may appear after 2 hours of filling drilled
holes, depending on ambient temperature, humidity,
rock or concrete hardness. Give it 24 hours for best
results. |
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CAUTION! |
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Read safety and operation instruction CAREFULLY. (
Go to
Downloads )
A pair of safety glasses,
rubber gloves and a
dust mask is REQUIRED. Avoid eyes, skin
contact. Do not breathe dust.
DO NOT look directly into filled holes as blowouts
may occur.
Keep Dexpan® in DRY storage. SEAL
container after use.
Select the correct type of Dexpan® for
your
temperature range. |
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Usage Tips |
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Well designed hole drilling pattern will minimize
consumption of Dexpan® by cutting into
desired sizes.
To insure success, Dexpan® needs free
space to expand to.
For better results, it is important to note both air
and material temperature. Material temperature is
the temperature inside of the rock or concrete which
can be different from the air temperature.
In summer, the best time to use Dexpan®
is in the morning or evening when material
temperature is cool.
In summer, cover holes from direct sunlight to avoid
blow-out. Example: using a tarp or damp hay to
provide shade.
In winter, mix 1% calcium chloride with Dexpan®.
Example: 100 lbs of Dexpan® mix with 1 lb
of calcium chloride.
If Dexpan® completely dries into powder
and did NOT crack, pour additional water onto Dexpan®
filled holes.
Wear goggles, blowouts may occur. |
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Drilling Designs |
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Filled Hole |
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Unfilled
Hole |
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Desired Cutting Line |
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[1] Regular
Shaped Object Demolition |
[2] Irregular
Shaped Object Demolition |
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[3] Cut into
desired size to lower cost |
[4] Tunneling |
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[5 (left)] Partial
Demolition with VERTICAL desired cutting line
[6 (right)] Partial
Demolition with HORIZONTAL desired cutting line |
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[7] Underground rock
excavation, dig around to provide free space |
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[8] Trenching, do not
need to dig around |
