Crackamite is a powder that must be thoroughly mixed with clean water before use, in a ratio of 30 % of the overall weight (1.5 litres for each 5 kg package). Gradually add the powder to water, stirring all the time to obtain a smooth, lump-free mortar.
Mix Crackamite with water, one bag at a time, by hand or, preferably, with a mechanical mixer. Prepare the following equipment:
Pour approximately 1.5 litre (0.4 U.S. gallon) of water into container. Add one bag of Crackamite gradually and mix well until it has a good fluidity.
When viscosity of the mixture of Crackamite and water is too high to pour into the hole, add a little water to get a good fluidity. Do not exceed 34% of water ratio (1.7 litre; 0.45 U.S. gallon per 5 kg; 11 lb. of Crackamite). The mixing time by hand-mixer is about 2 - 3 minutes. It is recommended that a mechanical mixer be used on large volume jobs. When mixing by hands, wear rubber gloves.
The quantity of Crackamite to be used for cracking differs with the hole spaces and diameters. In the table below, the relation between the quantity of Crackamite used and the hole diameters is indicated for the hole of 1 m depth, where Crackamite is mixed at a water ratio of 30%.
| Hole Diameter | 30 mm | 32 mm | 34 mm | 36 mm | 38 mm | 40 mm | 42 mm | 44 mm | 46 mm | 48 mm | 50 mm | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Crackamite (Kg/m³) | 1.2 | 1.3 | 1.5 | 1.7 | 1.9 | 2.1 | 2.3 | 2.5 | 2.8 | 3.0 | 3.2 | |
| Hole Depth | One Meter | |||||||||||
| Note: | You may get 3% to 6% less yield due to field conditions. | |||||||||||