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Science and Technology of Energetic Materials

Vol.64, No.1 (2003)

Research paper

Static demolition agent by calcium oxide(*in Japanese)
Hisaaki Fukui and Kazuhiko Tsukada
p.25-31

Abstract

This report mainly consists of the measurement result on the pressure distribution from what portions occure by the expansion of the static demolition agent in the aluminum pipe.
As the result, the expansion pressure doesn't occure equally from all portion charged in aluminum pipe but comes out from the particular portion. This section is approximately at 20% areas from bottom of the pipe. In order to examine the above result, two kinds of experiments are taken.
The first, using the opaque plastic tube of which free deformations are capable at any surface, it is observed that any portion of the pipe starts to enlarge toward circular direction.
The second is the test using the opaque acrylic block in order to observe the expansion behavior under the confinement condition.
Both of them are showed the same tendency as the pressure distribution measurement that the expansion stats to occure at 20% around from bottom of the pipe.
Finally, the test of the breacrage properties on lime ston rocks is examined compared with circular holes and elliptical holes.
Consequently, it is found that the spacing of elliptical holes is prolonged 1.6 times than circular holes.

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