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Structural Engineering and Mechanics
  Volume 65, Number 2, January25 2018 , pages 203-211

An experimental study on the development and verification of NCC(new concrete cutting) system
Park Jong-Hyup and Han Jong-Wook

    This paper introduces the development process of NCC(New Concrete Cutting) system and analyzes first verification test. Based on the first verification test results, some problems of NCC system have been newly modified. We carry out the second verification test. We tried to verify cutting performance and dust control efficiency of NCC system through the cutting test of concrete bridge piers. In particular, this verification test strives to solve the problem of concrete dust, which is the biggest problem of dry cutting method. The remaining dust problems in cutting section tried to solve through this verification test. This verification test of the NCC system shows that the dust problem of dry cutting method is closely controlled and solved. In conclusion, the proposed NCC method is superior to the dry cutting method in all aspects, including cutting performance, dust vacuum efficiency and cooling effect. The proposed NCC system is believed to be able to provide eco-friendly cutting technology to various industries, such as the removal of the SOC structures and the dismantling of nuclear plants, which have recently become a hot issue in the field of concrete cutting.
Key Words
    concrete cutting; NCC method; water-cooled cutting; dry cutting; dust vacuum efficiency; temperature
Park Jong-Hyup: Technical Research institute, Ok Dang Industry Co., Ltd, Ace Hightech II, 25, Seonyu-ro, 13-gil, Yeongdeungpo-gu, Seoul, Republic of Korea
Han Jong-Wook: Hybrid Structural Test Center, Myong-Ji University, Young-In City, Republic of Korea

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