도시쓰레기 소각재 슬래그로 제조된 지오폴리머의 특성 = Characterization of geopolymer made of municipal solid waste incineration ash slag

다국어 초록 (Multilingual Abstract)

In this research, the geopolymer was fabricated using municipal solid waste incineration ash (denoted as MSWIA) slag and alkali activator, NaOH and its properties were analyzed. Particularly, the effects of NaOH molarity, particle size of MSWIA, and liquid/solids ratio on the compressive strength of geopolymers were investigated. The compressive strength of geopolymers fabricated increased with finer grain size of MSWIA, and optimum value of the liquid/solids ratio was identified as 0.13. As the molarity of the NaOH increased, the compressive strength of geopolymers was increased. Even more the 20 M of NaOH, but the strength was not increased. The calcium aluminum silicate and calcium aluminum silicate hydrate zeolites were generated in the geopolymer fabricated with more than 20 M of NaOH, with some unreacted silica and unknown crystals remained. The highest compressive strength, 163 MPa, of geopolymer was appeared at conditions of curing temperature $70^{\circ}C$, and 20 M of NaOH, indicating that the high concentration of NaOH accelerates the geopolymer reaction and dense microstructure. The high-strength geopolymer fabricated in the present study is expected to contribute significantly to develop the field of cement alternative substances and to improve the recycling rate of MSWIA slag.

참고문헌 (Reference)

1 김유택, "폐자원의 분류/선별을 통한 지오폴리머 특성 개선 연구" 한국결정성장학회 22 (22): 299-304, 2012

2 김현정, "재활용 폐자원에 따른 지오폴리머의 특성변화 연구" 한국결정성장학회 22 (22): 152-157, 2012

3 김진태, "알루미노 실리케이트계 지오폴리머의 압축강도에 미치는 알카리 활성화제의 영향" 한국세라믹학회 47 (47): 216-222, 2010

4 J.E Aubert, "Utilizationof municipal solid waste incineration (MSWI) fly-ash inblended cement: Part 2. Mechanical strength of mortarsand environmental impact" 146 : 12-, 2007

5 P. Friedlingstein, "Update on CO2 emissions" 12 : 811-, 2010

6 K.L. Lin, "Thereuse of municipal solid waste incinerator fly ash slagas a cement substitute" 39 : 315-, 2003

7 P. Duxson, "The role of inorganic polymer technology inthe development of green concrete" 37 : 1590-, 2007

8 J.G.S. van Jaarsveld, "The potential use of geopolymeric materials toimmobilise toxic metals" 10 : 659-, 1997

9 J. Davidovits, "The polysialate terminology: A very usefuland simple model for the promotion and understandingof green-chemistry, in geopolymer, green chemistryand sustainable development solutions" 9-, 2005

10 K.L. Lin, "The hydration properties of pastes containing municipal solid waste incineratorfly ash slag" 109 : 173-, 2004

11 R.A. Fletcher, "The composition range of aluminosilicategeopolymers" 25 : 1471-, 2005

12 J. He, "Synthesisand characterization of red mud and rice husk ash-basedgeopolymer composites" 37 : 108-, 2013

13 J.K. Lee, "Situation and prospectof Geopolymer" 9 : 44-, 2006

14 J.M. Allwood, "Optionsfor achieving a 50 % cut in industrial carbon emissionsby 2050" 44 : 1888-, 2010

15 Q. Wang, "Melting characteristics during the vitrification of MSWIfly ash with a pilot-scale diesel oil furnace" 160 : 376-, 2008

16 K.L. Lin, "Leaching characteristics ofslag from the melting treatment of municipal solidwaste incinerator ash" 135 : 296-, 2006

17 K. Sreenivasarao, "Hydrometallurgical treatment of municipal solidwaste fly-ash for simultaneous detoxification and metalrecovery" 32 : 1225-, 1997

18 J. Ambroise, "Hydration reactionand hardening of calcined clays and related minerals V.Extension of the research and general conclusions" 15 : 261-, 1985

19 J. Davidovits, "Geopolymers: inorganic polymeric newmaterials" 37 : 1633-, 1991

20 K. Komnitas, "Geopolymerisation; Areview and prospects for the minerals industry" 20 : 1261-, 2007

21 P. Duxson, "Geopolymer technology: the ccurrent stateof the art" 42 : 2917-, 2007

22 Ministry of Environment, "Annual Report: Status of operation of the resourcerecovery facility of municipal waste" Ministry of Environment 2012