Journal of the Korea Institute of Building Construction (한국건축시공학회지)

The Korean Institute of Building Construction (한국건축시공학회)
권호 표지
DOI QR코드

DOI QR Code

Dynamic and Durability Properties of the Low-carbon Concrete using the High Volume Slag

High Volume Slag를 사용한 저탄소 콘크리트의 역학 및 내구특성

  • Moon, Ji-Hwan (Department of Architectural Engineering, Hanbat National University) ;
  • Lee, Sang-Soo (Department of Architectural Engineering, Hanbat National University)
  • Received : 2013.01.04
  • Accepted : 2013.04.18
  • Published : 2013.08.20
Download PDF
⟨ Previous Next ⟩

Abstract

Blast furnace slag (BFS) have many advantages that are related to effective value improvement on applying to concrete while side effects of blast furnace slag also appear. Thus, research team conducted an experiment with high volume slag to see if the attribute of waste alkali accelerator for mixing rate, mixed use of NaOH and $Na_2SiO_3$, and early strength agent for mixing rate for replacement ratio and for the types of the stimulants in order to increase the use of blast furnace slag1s powder. As the result of the experiment, when it comes to compression strength, all of the alkali stimulants have been improved as the replacement rate increases except for sodium hydroxide. Among the alkali stimulants, sodium silicate was high on dynamic elastic modulus and absorption factor. In case of early strength agent, the mix of mixing 1.5% and blast furnace slag 75% have showed high strength enhancement. In event of Waste Alkali accelerator, it has showed different consequences for each experiment.

고로슬래그는 콘크리트의 적용시 효율적인 가치향상과 관련하는 많은 장점도 있으나, 고로슬래그의 사용량 증대에 따른 부작용도 나타나고 있다. 따라서 고로슬래그 미분말의 활용성 증대를 위해 High Volume Slag를 자극제 종류별, 치환율별, 조강제 혼입율별, NaOH, $Na_2SiO_3$ 혼합사용시, 폐알칼리자극제 혼입율별 특성을 알아보기 위해 실험하였다. 실험결과, 압축강도의 경우 수산화나트륨을 제외한 모든 알칼리자극제에서 치환율이 증가함에 따라 강도가 증진되었다. 알칼리자극제 중 규산나트륨이 동탄성계수와 흡수율 등에서 높게 나타났으며, 조강제의 경우 혼입율 1.5%와 고로슬래그 치환율 75%가 높은 강도증진을 나타내었다. 폐알칼리 자극제의 경우 모든 실험에서 각기 다른 결과를 나타내었다.

Keywords

References

  1. Han CG, Lee JH, Han MC, Ryu GS, Park BK, Yoo JW. Effects of stimulant types on initial strength of concrete replaced by high volume of blast furnace slag powder. Proceedings of korea recycled construction resource institute; 2008 Jun 19; Seoul (Korea). Seoul (Korea): korea recycled construction resource institute; 2010. p. 61-4.
  2. Han CG, Lee JH, Koh KY, Han MH, Lee JS. Temperature dependency affecting the properties at early age of the concrete containing high volume blast furnace slag. Journal of the Korea recycled construction resource institute. 2009 Sep;4(1):74-7.
  3. Kim MH, Kim GY, Cho BS, Na CS, Kim YD. An experimental study on the engineering property and durability of concrete using ground granulated blast furnace slag. Architectural Institute korea collection of dissertations Structural Journal. 2007 May;23(3):61-8.
  4. Park SS, Kang HY, Han KS. Development of fly ash/slag cement using alkali-activated reaction(2) - reaction products and microstructure. Journal of Korean Society of Environmental Engineers. 2007 Jul;29(7):810-10.
  5. Cheema DS, Roads M, Australia W. Low calcium fly ash geopolymer concrete : a promising sustainable alternative for rigid concrete road furniture. 25th ARRB Conference; 2012 November; Perth, Australia. Australia: ARRB Group Ltd; 2012. 10 p.
  6. Chonbuk National University. Development of Cement Production Technology without Sintering Process by Combination of Inorganic Industrial Wastes for Zero CO2 Emission. Gwacheon-si (Korea): Ministry of Environment; 2007. p. 32-4.
  7. Gweok GH, Jee NY, Yoon SC. The Experimental Study on The Practical Use of Secondary Product ofConcrete Contained Alkali-Activated Slag, Architectural Institute korea collection of dissertations Structural Journal. 2007 Jan;23(1):121-8.
  8. Won H. A laboratory study on anti-acid mortar using calcium-aluminate cement and blast-furnace slag with fly-ash [master's thesis]. [Seoul (Korea)]: Seoul National University of Science Technology; 2010. 17 p.
  9. Kim SW, Kim JS, Lee SS, Song HY, Kim EY. An Experimental Study on the Durability of High Performance Concrete according to the Replacement ratio of Blast Furnace Slag. Proceeding of the Korea Concrete Institute; 2007 April; daegu (Korea). Seoul (Korea): Korea Concrete Institute; 2007. p. 565-8.
  10. Oh SH. Study on compressive strength and flowing characteristics of alkali-activated mortar containing blast furnace slag [master's thesis]. [Seoul (Korea)]: University of Sungkyunkwan; 2011. 20 p.
  11. An YJ, Mun KJ, Soh SY, Soh YS. The Properties of Alkali Activated Slag Mortarsusing Sodium Silicate with Activator. Architectural Institute korea collection of dissertations Structural Journal. 2006 Oct;26(1):26-2.

Cited by

  1. Effect of Fine Particle Cement and Recycled Aggregates as Alkali Activator on the Engineering Properties and Micro-Structure of High Volume Blast Furnace Slag Concrete vol.13, pp.6, 2013, https://doi.org/10.5345/JKIBC.2013.13.6.602
  2. Determination of Water-to-Binder Ratios on the Equivalent Compressive Strength of Concrete with Supplementary Cementitious Materials vol.27, pp.6, 2015, https://doi.org/10.4334/JKCI.2015.27.6.687