Aiming to eliminate excessive labor accompanied by noise and vibration, non-explosive demolition agents are applied to pile head treatment.
The non-explosive demolition agent method for pile head treatment involves loading a non-explosive demolition agent into holes drilled from the outer surface of the pile towards its center, and igniting it to instantaneously crush the concrete, forming a horizontal fracture surface, thereby separating the main body of the pile from the excess portion. The excess portion can be removed as consolidated fragments using a crane or similar equipment. The chipping work involved in pile head treatment is an extremely demanding task for workers, as they are subjected to strong noise, vibration, and dust at close range. In the construction sector, where there is a shortage of workers, the non-explosive demolition agent method for pile head treatment is a technology that contributes to the preservation of the surrounding environment as well as the improvement of the working conditions. The non-explosive demolition agent undergoes a redox reaction known as the thermite reaction, which crushes the material through instantaneous steam expansion pressure. The reaction rate is about 1/25 that of explosives, and since it does not generate shock waves, it can separate the excess portion without damaging the main body of the pile. Tests on the concrete compressive strength of the main body of the pile and tensile tests on the rebar have confirmed that there is no reduction in strength, and that both the concrete and rebar are intact.
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basic information
**Characteristics of Non-Explosive Demolition Agents** Non-explosive demolition agents are non-explosive materials developed to efficiently break rock formations and similar structures near safety-sensitive sites. They can break rock and concrete structures using the expansion pressure generated by a thermite reaction. - Because they are non-explosive, they are not subject to the Firearms and Explosives Control Law, making their handling for storage and use straightforward. - Since no shock waves are generated, they allow for low-vibration and environmentally friendly demolition. - The work procedures are similar to blasting methods, enabling instantaneous demolition.
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Applications/Examples of results
For more details, please refer to the PDF document or feel free to contact us.
Detailed information
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We will drill holes with an electric hammer drill.
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Measure the planned amount from the non-explosive fracturing agent cartridge and refill it into a narrow tube.
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After finishing the perforation, non-explosive fracturing agents are loaded into the holes and tamped with sand.
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To prevent flying debris, we will cover the pile heads with explosion-proof sheets or similar materials.
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Workers will be evacuated from the area around the pile head, and ignition will occur once safety is confirmed.
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The moment of ignition. The excess part jumps up.
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A horizontal fracture surface will be formed.
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The excess part will be lifted all at once by the crane as a single fragment.
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It will be loaded onto the truck as is and transported to the disposal site in bulk.
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Company information
Sagamiko Corporation plans, designs, constructs, and manages various types of demolition work, including the removal and disposal of asbestos-containing building materials. Additionally, by controlling the powerful destructive energy of explosives, we have adopted blasting methods for demolition work, particularly the mini blasting method, which actively reduces environmental impact on the surrounding area. The mini blasting method minimizes the use of heavy machinery, reduces fuel consumption, improves worker safety, shortens construction time, lowers costs, and significantly contributes to environmental improvements. Sagamiko Corporation will continue to meet customer needs based on the know-how and network developed through our accumulated experience.
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