Thin Metal Wire Discharge Shock Crush Method and Crack Control for Concrete Structure

2016 Fiscal Year Final Research Report

• Project/Area Number: 26420448
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Civil engineering materials/Construction/Construction management
• Research Institution: National Institute of Technology, Kumamoto College
• Principal Investigator: Murayama Koichi 熊本高等専門学校, 機械知能システム工学科, 准教授 (30290836)
• Research Collaborator: YAMAMOTO Takenori ; KUBOZONO Yuta ; YAMASAKI Masaya ; TAKEHARA Mitsuru ; HIRAOKA Kento
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 細線放電 / コンクリート破砕 / 衝撃波

Outline of Final Research Achievements

This research aims to a develop method of controlling crack directions for concrete structure in electric discharge shock crush method. We use two types of test pieces. One is the mortar test piece with wedge-shaped cavity and the other is the large mortar test piece embedded the small test piece with wedge-shaped cavity.
As a result, the mortar test piece with wedge-shaped cavity can control the crack at the horizontal and vertical direction. Moreover the large mortar test piece embedded the small test piece with wedge-shaped cavity can control the cracks at the horizontal direction. In conclusion, the crack directions can control by using the appropriate shape of cavity in the object and using the embedded test piece method.

Free Research Field

高電圧工学