1. Drilling
Drill holes using an air hammer drill and appropriate drill bit specific to the rock type.
Holes should be drilled no further than 30-60cm (1ft-2ft) apart. Note: In reinforced concrete recommended no more than 20cm (8”) apart.
Recommended hole diameter 38mm - 50mm (1 ½" - 2.0"). Depth would be 70-90% of the way thru depending on the type of rock/material to be removed.

2. Mixing
For regular safety reasons and mixing small amounts by hand, it is recommended to use rubber gloves.
In a bucket, combine 1.5 Liters of water to one 5kgs bag of SINO-CRACK?, or combine SINO-CRACK? at a ratio of 1:3 units by weight.
Mix well, using a drill and paddle is recommended. If mixing with a stick or other method, make sure powder is completely dissolved into the water. Mix to a slurry.

3. Filling
Clean holes before filling using air hose remove excess dust from drilling.
SINO-CRACK? slurry should be poured into holes within 15 min. after mixing. Do not fill to the top, only fill the holes to about 15mm ( ½” to 1”) from the top.
Mix well and pour into holes while agitating the hole to make sure no air gaps are in the hole. Example: Using a piece of rod or stick to poke holes.
For Horizontal holes, a grouting pump would be most reliable to operate. Or you can insert a slightly smaller plastic pipe into the hole, and then fill the expansive mortar into the pipe slowly, withdrawing the pipe from the hole simultaneously. Quickly block the hole with a cap after filling.

Cracking Or Cutting Time
The cracks appear in 30-60 min. after filling, depending on the weather，rocks, and hardness of target. The cracks become wider within time (maximun 24 hours expanding time).