자원리싸이클링 (Resources Recycling)

  • 제25권6호
  • /
  • Pages.58-64
  • /
  • 2016
  • /
  • 2765-3439(pISSN)
  • /
  • 2765-3447(eISSN)
한국자원리싸이클링학회 (The Korean Institute of Resources Recycling)
권호 표지
DOI QR코드

DOI QR Code

시멘트 혼합재로의 전처리 제지애쉬 적용가능성 연구

A Study on Pretreated Paper Sludge Ash for Cement Admixture

  • 정재현 (한국세라믹기술원 에너지환경소재본부) ;
  • 서성관 (한국세라믹기술원 에너지환경소재본부) ;
  • 추용식 (한국세라믹기술원 에너지환경소재본부)
  • 투고 : 2016.10.31
  • 심사 : 2016.11.30
  • 발행 : 2016.12.31
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

Abstract

제지산업은 다량의 산업부산물을 배출하고 있으며, 제지애쉬 발생량도 증가하고 있다. 본 연구에서는 제지애쉬를 시멘트 혼합재로 사용하기 위해서 수화수를 사용하여 전처리 하였다. 전처리 제지애쉬와 석고를 혼합하여 혼합재를 제조하였으며, 이후 시멘트를 대체하여 사용하였다. 제지애쉬 혼합시멘트는 제지애쉬 함량에 따라 물성이 변화하였으나, 10% 이하 사용시에는 기존 OPC와 동등 물성이 발현되었다. 이때 압축강도는 수화물 중 $Ca(OH)_2$의 생성량과도 일정 상관성을 나타내었으며, 3일 강도는 $Ca(OH)_2$ 함량이 증가할수록, 28일 강도는 감소할수록 압축강도가 증가하였다.

Paper industry discharges many by-products and quantity of PSA (Paper sludge ash) has been increased. In this study, hydration water was added to PSA for use as cement admixture. PSA with added water was mixed with anhydrite and this mixture was used as cement substitute. Physical properties of PSA cement were changed by contents of PSA, but PSA cement containing PSA less than 10% had similar properties to those of OPC. Compressive strength of PSA cement mortar had a certain relationship with $Ca(OH)_2$ content. Compressive strength at 3 days increased, as $Ca(OH)_2$ content increased. However, the strength at 28 days increased, as $Ca(OH)_2$ content decreased.

Keywords

References

  1. Cho, J. H. 2015: "Environmental Characteristics of Pulp and Paper Industry", Report of National Environmental Information Center, No.2015-47, pp. 1-2, Korea.
  2. Korea Ministry of Environment, 2015:"Gneration and Trearment Status of the National Solid Waste Year of 2014", pp. 718-1222, Korea.
  3. Yoon, K.J. 2012:"Application of Environment Friendly Materials with Recycling Paper Mill Sludges", M.S Thesis, Chungbuk National University, Korea.
  4. Jeong, H.J. 2013:"Solidification Processing of Sewage Sludge by Using Paper Sludge Ash", M.S Thesis, Seoul National University of Science and Technology, Korea.
  5. Jeong, M.I. 2004: "An Experimental Study on the Effects of the Crack Control of Concrete Using Paper Sludge Ash", M.S Thesis, Chungbuk National University, Korea.
  6. Moon, K.J., Kim, J.S., Soh, Y.S. 2001: Manufacturing of Sintered Lightweight Aggregate using Paper Mill Sludge Ash, Journal of the Korea Concrete Institute, 13(2), pp. 114-122. https://doi.org/10.22636/JKCI.2001.13.2.114
  7. Goni, S. et al., 2013: Decalcification of Activated Paper Sludge-Fly ash -Portland Cement Blended Pastes in Pure Water, Cement and Concrete Composites, 40(1), pp. 1-6. https://doi.org/10.1016/j.cemconcomp.2013.04.002
  8. Vegas I. et al., 2014: Aging and Durability of Ternary Cements Containing Fly Ash and Activated Paper Sludge, Construction and Building Materials, 52(15), pp. 253-260. https://doi.org/10.1016/j.conbuildmat.2013.10.070
  9. Bai, J. et al., 2003: Compressive Strength and Hydration of Wastepaper Sludge Ash-Ground Granulated Blastfurnace Slag Blended Pastes, Cement and Concrete Research, 33(8), pp. 1189-1202. https://doi.org/10.1016/S0008-8846(03)00042-5
  10. Mozaffari E. et al., 2006: Improving Strength Development of Wastepaper Sludge Ash by Wet-milling, Cement and Concrete Composites, 28(2), pp. 144-152. https://doi.org/10.1016/j.cemconcomp.2005.10.007
  11. Park, S.H. et al., 2013: Properties of Shrinkage Reducing Agent and Mortar Using Anhydrite and $C_{12}A_7$-Based Slag, Journal of Korean Recycled Construction Resources Institute, 1(2), pp. 101-106. https://doi.org/10.14190/JRCR.2013.1.2.101
  12. Rafael Talero, 1996: Comparative XRD analysis ettringite originating from pozzolan and from portland cement, Cement and Concrete Research, 26(8), pp. 1277-1283. https://doi.org/10.1016/0008-8846(96)00092-0
  13. Jae Eun Oh, 2011: Does the Al substitution in C-S-H(I) change its mechanical property, Cement and Concrete Research, 41, pp. 102-106. https://doi.org/10.1016/j.cemconres.2010.09.010