Introduction

Usage Instruction

Job Photos

Safety Information

Downloads

FAQs

Dexpan^® Non Explosive Controlled Demolition Agent

For Controlled Demolition, Reinforced Concrete Cutting, Rock Breaking, Quarrying, Stone Dimension, Mining, Excavating ...

[Preparation]

[Drilling]

[Mixing]

[Filling]

[Coverage]

[Cracking Time]

[CAUTION]

[Tips]

Dexpan 3 Easy Steps to succeed: Drill, Mix and Fill

Read safety and operation instruction CAREFULLY before use Dexpan

For technical support, call our toll-free 1-866-272-4378 or 575-874-9188 (United States)

Dexpan Preparation

Reinforced concrete foundation, 3'x3'x2'

Temperature was 85°F. Dexpan I was used

Safety glasses, dust mask, gloves, long sleeve cloth are required.

Dexpan Step 1: Drilling

• Drill holes using a hammer drill and appropriate drill bit specific to the rock or concrete type.

• 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.

• 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.

Dexpan Step 2: Mixing

• In a flat bottom bucket, combine 0.4 gal (1.5 l) of water with one 11 lbs (5 kgs) bag of Dexpan^®.

• 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.

Dexpan Step 3: Filling

• Clean holes before filling. Using an air hose to remove excess dust from drilling.

• 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.

• 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.

• 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.

Dexpan Coverage and Cracking Time

Dexpan 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.

Dexpan 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.

Dexpan CAUTION!

Read safety and operation instruction CAREFULLY. ( Go to Dexpan 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 Dexpan container after use.

Select the correct type of Dexpan^® for your temperature range.

Dexpan Usage Tips

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 Dexpan 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.

Dexpan Drilling Designs

[5 (left)] Partial Demolition with VERTICAL desired cutting line

[6 (right)] Partial Demolition with HORIZONTAL desired cutting line

[8] Trenching, do not need to dig around