Browse > Article
http://dx.doi.org/10.7734/COSEIK.2017.30.2.145

Effective Arrangement of Non-explosive Demolition Agents and Empty Holes for Improving Fragmentation of Square Concrete Structures  

Cho, Hwangki (Department of Mechanical Engineering, Graduate School, Korea Maritime and Ocean Univ.)
Nam, Yunmin (Department of Mechanical Engineering, Graduate School, Korea Maritime and Ocean Univ.)
Kim, Kyeongjin (Department of Civil and Environmental Engineering, Graduate School, Korea Maritime and Ocean Univ.)
Lee, Jaeha (Department of Civil Engineering, College of Engineering, Korea Maritime and Ocean Univ.)
Sohn, Dongwoo (Division of Mechanical Engineering, College of Engineering, Korea Maritime and Ocean Univ.)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.30, no.2, 2017 , pp. 145-151 More about this Journal
Abstract
As an alternative to conventional explosive methods for demolition of concrete structures and rocks, the use of non-explosive demolition agents can be considered to reduce noise, vibration, and dust emissions during the demolition process. In this study, we conduct finite element analysis for crack initiation and propagation caused by the expansion of non-explosive demolition agents in square concrete structures. The predicted crack patterns are compared with the experimental results in the literature. The minimum values of the required expansion pressure of non-explosive demolition agents are also estimated, which depend upon the arrangement of non-explosive demolition agents and empty holes. Furthermore, we investigate the effect of empty holes on the fragmentation of concrete structures, and discuss the effective arrangement of non-explosive demolition agents and empty holes for fragmentation improvement.
Keywords
concrete structure demolition; fragmentation; non-explosive demolition agent; hole; minimum required pressure;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Abaqus (2014) ABAQUS Documentation, Dassault Systems, Providence, RI, U.S.A.
2 Ahn, M.S. (1991) A Study of the Safe Measure Industrial Explosives, Explosives and Blasting, 9(4), pp.13-21.
3 Archer Company USA, Inc. http://www.dexpan.com/dexpan-non-explosive-controlled-demolition-agent -silent-cracking-breaking.aspx (accessed Dec. 28, 2016).
4 Arshadnejad, S., Goshtasbi, K., Aghazadeh, J. (2011) A Model to Determine Hole Spacing in the Rock Fracture Process by Non-explosive Expansion Material, Int. J. Miner. Metall. & Mater., 18, pp.509-514.   DOI
5 De Silva, R.V., Gamage, R.P., Perera, M.S.A. (2016) An Alternative to Conventional Rock Fragmentation Methods Using SCDA: A Review, Energies, 9(11), p.958.   DOI
6 Gambatese, J.A. (2003) Controlled Concrete Demolition Using Expansive Cracking Agents, J. Construct. Eng. & Management, 129(1), pp.98-104.   DOI
7 Laefer, D.F., Ambrozevitch-Cooper, N., Huynh, M.P., Midgette, J., Ceribasi, S., Wortman, J. (2010) Expansive Fracture Agent behaviour for Concrete Cracking, Mag. Concr. Res., 62(6), pp.443-452.   DOI
8 Nam, Y., Kim, K., Park, S., Sohn, D., Lee, J. (2015) Arrangement of Agent Holes for Enhancing Crack Propagation in Structure Demolition Process Using Soundless Demolition Chemical Agents, J. Comput. Struct. Eng. Inst. Korea, 28(6), pp.683-690.   DOI
9 Natanzi, A.S., Laefer, D.F., Connolly, L. (2016) Cold and Moderate Ambient Temperatures Effects on Expansive Pressure Development in Soundless Chemical Demolition Agents, Constr. & Build. Mater., 110, pp.117-127.   DOI
10 Sunwoo, S., Ryu, C., Choi, B. (2001) Blast Fragmentation Measurement Using the Image Based Granulometry System, Explos. & Blasting, 19(2), pp.5-18.