Non-explosive demolition agents
In today's world, Non-explosive demolition agents is a topic of great relevance and interest to a wide spectrum of society. Whether it's a current topic, a prominent figure, a historical event, or any other area of importance, Non-explosive demolition agents has captured the attention of people of all ages and backgrounds. This attention is due, in part, to the relevance that Non-explosive demolition agents has in people's daily lives, as well as its impact in different areas, such as politics, culture, technology or the economy. This article seeks to further explore the meaning and importance of Non-explosive demolition agents, as well as provide a detailed analysis of its impact on today's society.
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Non-explosive demolition agents are chemicals 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 as they would be 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.
The active ingredient is typically calcium oxide, "burnt lime," and is typically mixed with Portland cement and modifiers.
These agents are much safer than explosives, but they have to be used as directed to avoid steam explosions during the first few hours after being placed.
| Application | Parameter | Usage amount (kg/m3) | |||
|---|---|---|---|---|---|
| Aperture (mm)[clarification needed] | Pitch-row (cm)[clarification needed] | Array pitch (cm)[clarification needed] | Bore depth | ||
| Light Rock | 30–45 | 30–50 | 30–50 | H[clarification needed] | 8–10 |
| Medium-hard Rock | 30–45 | 25–40 | 20–35 | 1.05H | 10–15 |
| Hard Granite | 35–45 | 20–40 | 20–30 | 1.05H | 18–20 |
| Rock Cutting | 30–40 | 20–35 | 50-80 | H | 5–15 |
| Unreinforced Concrete and Boulder Stones | 35–50 | 20–30 | 25–35 | 0.9H | 8–15 |
| Reinforced Concrete | 30–45 | 15–25 | 15–25 | H | 15–25 |
Many patents describe non-explosive demolition agents containing CaO, SiO2 and/or cement.
See also
References
- ^ Gambatese, John A. (February 2003). "Controlled Concrete Demolition Using Expansive Cracking Agents". Journal of Construction Engineering and Management. 129 (1). American Society of Civil Engineers: 98–104. doi:10.1061/(ASCE)0733-9364(2003)129:1(98).
- ^ "Patents: Non-explosive Demolition Agents". www.baustoffchemie.de. Archived from the original on 2003-07-26.