Demolition Design

For VERTICAL and downward situations, it is necessary to identify that there is at least one free face there. The diameter of holes is crucial to the cracking results. Too small holes are not in favour of good performance of the agent, while too big holes may cause blow out. Holes 30-40mm diameter is recommended. If the cracked objects are isolated, the depth of drilled holes is equal to 80-90% of the objects thickness. If used in Marble and Granite quarrying and mining, the depth of drilled holes should be equal to 110% of the objects thickness. To very long holes, tamp the mortar section by section. It is not necessary to put on any restrictive cap, Just leave as it is and wait until crack initiates. For horizontal and slant holes, insert a slightly smaller plastic pipe into the hole, and then fill the mortar into the pipe slowly, withdrawing the pipe from hole simultaneously. Quickly block the hole with a cap after feeding. All operation including mixing and pouring should be finished as soon as possible, it must be completed within 10 minutes.