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RAPID STEMMING MATERIAL USED IN SHORT BOREHOLE FOR CONCRETE STRUCTURE DEMOLITION AND BLASTING DEMOLITION METHOD USING THE SAME
RAPID STEMMING MATERIAL USED IN SHORT BOREHOLE FOR CONCRETE STRUCTURE DEMOLITION AND BLASTING DEMOLITION METHOD USING THE SAME
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机译:短孔快速充填材料用于混凝土结构拆除及爆破拆除的相同方法。
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摘要
The present invention relates to an accelerating vehicle for a single hole for blasting and crushing a structure, and a blasting and crushing construction method using the same. The purpose of the present invention is to increase crushing efficiency and work efficiency by maintaining the explosion pressure inside a charge hole and hardening within a short time when a structure (disassembled target concrete) having a short tamping field is blasted and disassembled. According to the present invention, the accelerating vehicle for a single hole for blasting and crushing a structure comprises: a filler (11) in which glass fiber reinforcing cement and sand are mixed; and a packing material (12) consisting of a hydrophilic material for absorbing water by one selected from a group including long fiber traditional Korean paper and long fiber paper, and whose inside is filled with the filler. After the accelerating vehicle is hydration-reacted by water, the accelerating vehicle is inserted into a charging blast hole of a blasted structure and tamping. The filler is formed by mixing 70-80 wt% of glass fiber reinforcing cement and 20-30 wt% of sand. According to the present invention, a blasting and crushing construction method using an accelerating vehicle for a single hole for blasting and crushing a structure comprises: a first step for preparing an accelerating vehicle for a single hole for blasting and crushing a structure to tamp a blast hole charged for blasting and crushing a blasted structure; a second step for tamping the charged blast hole after the accelerating vehicle for a single hole for blasting and crushing a structure prepared through the first step absorbs water; and a third step for blasting by priming the blast hole charged through the second step. In the second step, the accelerating vehicle for a single hole for crushing is dipped into water and absorbs the water.
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