Description
NEDA expansive mortar, stone cracking powder, Soundless Cracking Agent ( SCA ) are Non-explosive demolition agents , is to be commercial products that are an alternative to explosives and gas pressure blasting products in demolition, mining, and quarrying. To use non-explosive demolition agents in demolition or quarrying, holes are drilled in the base rock like they would be drilled for use with conventional explosives. A slurry mixture of the non-explosive demolition agent and water is poured into the drill holes. Over the next few hours the slurry expands, cracking the rock in a pattern somewhat like the cracking that would occur from conventional explosives.
Non-explosive demolition agents offer many advantages including that they are silent and do not produce vibration the way a conventional explosive would. In some applications conventional explosives are more economical than non-explosive demolition agents. In many countries these are available without restriction unlike explosives which are highly regulated.
These agents are much safer than explosives, but it is important to follow directions closely in order to avoid steam explosions during the first few hours after these materials are placed.
Soundless Cracking Agent is a non-explosive demolition agent that has the ability to safely demolish rocks and reinforced concrete, cement without producing noise, vibrations, debris launches or environmental pollution, To carry out the demolition NEDA requires only the drilling of the rock or cement to be able to drain the NEDA and water mixture into the holes. The demolition is completed with utmost safety without the use of protection as in the case of explosives.
Product Features
Max. fast cutting time within 45 minutes to crack granite block in quarry, average cracking time Such as black Galaxy less 2-3 hours, Tropical Brown 3-4 hours, Safe and easy use, and high quarrying productivity, cracking time under control, Without blown-out shot during quarrying application.
- Technical Data Sheet :
Normal Stone Cracking Agent (SCA): Expansive Mortar
1, Used for stone quarry, such as granite, marble and sandstone with free surface.
2, It’s expansive pressure can be 15Mpa.
3, Three type, please check as below:
- Application procedure – giving distance between drilled holes and quantity to be administered.
How to Use:
Mixer : 10L-20L plastic drum or metal drum mixer; small amount may be mixed by hands in rubber gloves; water meter, measuring cup or measuring drum, protective appliance, rubber gloves, and protective glasses.
Mixing: Pour 1.5L clean water into the mixing container, slowly add a 5 kg standard bag of NEDA (add water according to 30% weight of NEDA), and mix evenly with good fluidity.
Mix 5 kgs of NEDA uniformly with approximately 1.5L of water. The hole depth will be 70-90% of the height of the boulder.
Splitting of Large Boulders :
d 32 – 35 mm 44 – 51 mm
11⁄4 “- 1 3/8 ” 13⁄4 ” – 2 ” L 30 – 40 cm 60 – 90 cm
1 ‘- 1 ‘ 4 ” 2 ‘- 3 ‘ D 70 % of Height
Symbol Key d Hole Diameter L Hole Space D Hole Depth Angle Hole Direction