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| 3 Easy Steps to succeed: Drill, Mix and Fill
Read safety and operation instruction
CAREFULLY before use |
| Preparation
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Demolition
agent;
Clean and cold water;
Plastic or metal bucket;
Beater or wooden rod for mixing;
Safety goggles;
Rubber gloves;
Dust-proof
mask (Recommended);
Helmet (Recommended);
Thermometer (Recommended) |
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Reinforced concrete foundation, 3'x3'x2' |
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Temperature was 85°
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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 Crack Dexpan. |
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Mix well (a drill
and paddle is recommended). If mixing with a stick or other
method, make sure Crack Dexpan is completely dissolved into
the water. Mix to a slurry. |
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Crack
Dexpan is a kind of powder that must be thoroughly mixed with
clean and cold water before use. In a ratio of 30% of the overall
weight, please put the required volume of water 1.5 -1.7 liters
into a container, then gradually add one bag of 5 kg of Crack
Dexpan powder into water and stir all the time to obtain a smooth,
lump-free slurry. If mixing has to be made by hand, rubber gloves
are required to wear. Longer mixing time increases likelihood
of blowout shoot.
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If
Crack Dexpan 2003 to be applied, inhibitor is required to add
into water, while it is not necessary to traditional type. |
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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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Crack 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
Crack Dexpan slurry into holes. Agitating the Crack 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 Crack 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 Crack 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. |
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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Usage Tips |
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Well
designed hole drilling pattern will minimize consumption of
Crack Dexpan by cutting into desired sizes. |
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To insure success,
Crack Dexpan needs free space to expand to. |
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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. |
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In summer, the
best time to use Crack Dexpan is in the morning or evening
when material temperature is cool. |
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In summer, cover
holes from direct sunlight to avoid blow-out. Example: using
a tarp or damp hay to provide shade. |
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In winter, mix
1% calcium chloride with Crack Dexpan. Example: 100 lbs of
Crack Dexpan mix with 1 lb of calcium chloride. |
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If Crack Dexpan
completely dries into powder and did NOT crack, pour additional
water onto Crack Dexpan filled holes. |
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