 |
| Home | About Us | Site Map | Contact Us | |
 |
|
USING CRACKAMITE - HOLE PRE-DRILLING  |
|
Pre-drilling Holes
 Crackamite's effectiveness depends on the placement, diameter and depth of the holes drilled in the material. To determine the right combination of hole size and spacing, first make a reference hole design using the parameters from the hole design sections, then drill several holes of different diameter at different burden and spacing. Now check the break conditions of each of them and then decide hole diameter, depth, burden and spacing.
Drilling
I. Drilling machine: Use electrical drill, rock drill or crawler drill.
II. Drilling direction: It is preferable to drill holes vertically, but in case of a wall or pillar of reinforced concrete where vertical drilling is difficult, an inclined hole may be drilled. Since a greater effect is achieved with a deeper hole, in case of a thin material, consideration should be given so as to get a long hole depth by drilling it obliquely, if necessary. Horizontal holes can have the spacing as with vertical holes.
III. Hole diameter and hole spacing: The breaking plan of the hole design sections should serve as a guideline in making this decision. In general, the preferable hole diameter is from 40 to 50 mm.
HOLE DEPTH
- Maximum Hole Depth is 10 feet. (3.05 meter)
- Minimum Hole Depth is 4 times hole diameter; for example 5" with 1¼" hole, 6" with 1½". Holes shallower than 4 times diameter are likely to blow out.
- In reinforced concrete, drill 90% to 95% of its depth. In a ledge, drill as deep as you want to remove. In boulders, drill 2/3rd to 3/4th of the rock's thickness.
- In soft hardness rock, like Marble, hole depth is 100%. In middle or high hardness rock, like granite, hole depth is 105%.
HOLE PATTERN
 Holes must be drilled so as to allow a free face for the Crackamite to push towards. For example, drilling at a 45° angle in the flat surface of a ledge will push it upwards, but drilling straight down might not allow the pressure to go anywhere.- To demolish a slab without pushing out the walls, which surround it, drill a cone shaped pattern at the center and fill these holes first. The cone will pop upwards and create a free face.
- Hole pattern depends on tensile strength of what you're breaking, amount of rebar, if any, and the size of the pieces you want when you're done. This can often be determined by experiment; a good starting point is to space holes one foot apart, in rows, one and a half feet apart. In non-reinforced concrete, holes may be spaced as far apart as 30 cm.
- Hole pattern also depends on how fast you need results. More holes spaced closer together will give faster cracking time and smaller pieces, but will cost more in terms of labor and Crackamite.
- Boulders are much easier to break than reinforced concrete or ledge, and drill holes can be spaced further apart, especially if breaking speed is not critical.
- Empty holes can also be used to direct cracks - they cost less than filled holes. This will save money compared to filling all the holes, but will slow down the breaking time.
|
|
|
CRACKAMITE. Learn more about Non-Explosive Demolition Agents Non-Explosive Demotion Agents are highly expansive powder compositions for stone breaking, granite and marble quarrying, concrete cutting and demolition. Non-Explosive Demotion Agents are safe, environment friendly and a good and viable alternative to explosives and other traditional methods of quarrying and demolition. CRACKAMITE Non-Explosive Demotion Agents are mixed with clean water and poured into pre-drilled holes on rock and concrete. The diluted CRACKAMITE Non-Explosive Demotion Agent swells and exerts significant expansive thrust on the hole-wall.
After a certain period, the pressure induced by the Non-Explosive Demotion Agent fractures the wall and splits the rock across the line of the drill holes. Non-Explosive Demotion Agents thus very easily split and fracture mass rock without producing any noise, vibration, toxic gases or flying debris. CRACKAMITE Non-Explosive Demotion Agents are getting increasingly popular in quarrying and demolishing applications. Non-Explosive Demotion Agents can be used in a wide range of applications for safe demolition, concrete cutting, rock breaking and marble & granite quarrying. Non-Explosive Demotion Agents are particularly used for breaking, cutting or demolishing marble, granite and other natural stones, concrete and reinforced concrete.
CRACKAMITE Non-Explosive Demotion Agents are ideal for use in situations where surrounding buildings or other structures would be damaged by flying debris or vibration. Non-Explosive Demolition, Controlled Breaking, Cutting and Cracking. Safe, Easy to use, Cost Effective and Non License Needed. Da-mite Rock Splitting Mortar. OTHER SCA TERMINOLOGY REFERENCE - Non-explosive Demolition Agent, Non-explosive Cracking Agent, Soundless (Silent, Noiseless) Cracking Agent (SCA), Expansive Demolition Agent, Expansive Agent, Expansive Mortar, Expansive Cracking Agent, Expansive Cement, Expansive Concrete, Chemical Rock Splitting Agent (CRSA). Cracking Design Reference Chart.
CRACKAMITE Crackamite can be used on any type of stone formation, concrete, reinforced concrete or tiled structure in Quarrying and stone cutting, removing boulders, Excavating foundations, Leveling stones for road works, Excavating trenches for pipe-laying, Underground excavations, Demolition of concrete or reinforced concrete objects, Demolition of foundations, Demolition of breakwaters or jetties, Demolition of tiled and refractory structures, and more. Crackamite is a non-toxic powder consisting of calcimined oxides of calcium, silicon and aluminum.
Crackamite is a soundless, non-explosive and safe demolition agent which is quite different from ordinary demolition agents such as explosives and dangerous materials. It does not cause any fly rock, noise, ground vibration, gas, dust or any other environmental pollution when used properly. Eliminates noise, fly rock and vibration potential caused by blasting or heavy mechanical means. Increases productivity of mechanical demolition equipment. CRACKAMITE Controls cracking.
Minimizes risk in high exposure situations such as rock or concrete excavation adjacent to hot rail lines or near sensitive fiber optic cables or controls. Works underwater in difficult conditions. Saves time in shutdown conditions. Eases removal where impact force is limited by specifications. Makes removal in confined spaces easier. Accelerates removal time once fracturing occurs. CRACKAMITE Requires no licensing or storage security. Non-Explosive Demolition, Controlled Breaking, Cutting and Cracking. Safe, Easy to use, Cost Effective and Non License Needed.
Jaipur Hotel and Service Apartment with Travel Services. Situated in Jaipur, Rajasthan.
Family managed hotel jaipur travel
Jaipur Hotel Hotel, Lodging, Boarding and Travel Options. Situated in Jaipur, Rajasthan.
jaipur hotels india hotel, traveling in india, jaipur hotel, rajasthan travel accommodation.
for nickel alloys and for sapphires and for dry flowers
