JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Arrangement of Agent Holes for Enhancing Crack Propagation in Structure Demolition Process using Soundless Chemical Demolition Agents
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Arrangement of Agent Holes for Enhancing Crack Propagation in Structure Demolition Process using Soundless Chemical Demolition Agents
Nam, Yunmin; Kim, Kyeongjin; Park, Sanghyun; Sohn, Dongwoo; Lee, Jaeha;
  PDF(new window)
 Abstract
For demolition of offshore facilities, traditional methods such as jackhammer and explosive methods have been often used in construction industry. However, prohibitions for use of those methods are becoming more rigorous especially in environmentally and historically sensitive areas. It was also reported that the explosive demolition method on maritime bedrock can cause a disturbance of ecosystem. For those reasons, use of soundless chemical demolition agent(SCDA) is getting the spotlight. However, researches regarding the mechanical point of SCDA have seldom performed. There is no industrial standard for use of SCDA yet. In this study, a pilot experimental study in order to measure the required expansive pressure that could be generated from SCDA was conducted. Numerical models were developed in order to estimate the required expansive pressures of SCDA for initiating cracks depending on selected key parameters. Obtained results indicate that the required pressure does not decrease linearly as increasing the hole diameter, the number of holes, and the ratio of hole-distance to hole-diameter.
 Keywords
soundless chemical demolition agents(SCDA);required pressure;structure demolition;
 Language
Korean
 Cited by
 References
1.
ABAQUS (2014) ABAQUS Documentation, Dassault Systemes, Providence, RI, U.S.A.

2.
CEB-FIP 2010 (2010) Final Draft CEB-FIP Model Code 1010, Bulletin Information Committee Euro-International, Beton, p.203.

3.
Gambatese, J.A. (2003) Controlled Concrete Demolition using Expansive Cracking Agents, J. Constr. Eng. Manag., 129(1), pp.98-104. crossref(new window)

4.
Hinze, J., Brown, J. (1994) Properties of Soundless Chemical Demolition Agents, ASCE, J. Constr. Eng. & Manag., 120(4), pp.816-827. crossref(new window)

5.
Huynh, M.P., Laefer, D.F. (2009) Expansive Cements and Soundless Chemical Demolition Agents : State of Technology Review, 11th Conference on Science and Technology, Ho Chi Minh City, Bietnam.

6.
Kim, G.W. (1998) Characteristics of Acoustic Emission by Expansive Cement Induced Rock Fractures, The J. Eng. Geol., 8(3), pp.207-213.

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. Conc. Res., 62(6), pp.443-452. crossref(new window)

8.
Lee, J., Fenves, F.L. (1998) Plastic-Damage Model for Cyclic Loading of Concrete Structures, J. Eng. Mech., 124(8), pp.892-900. crossref(new window)

9.
Lubliner, J., Oliver, J., Oller, S., Onate, E. (1989) A Plastic-Damaged Model for Concrete, Int. J. Solids & Struct., 25(3), pp.299-326. crossref(new window)