SET Proceedings 2978-4387 Caravel Press 10.65582/set.2008.157 2008.157 Performance of Concrete Sludge Based Geopolymer with Different Alkaline Activator YangZ.X. HaN.R. JangM.S. HwangK.H. khhwang@gsnu.ac.kr JunB.S. LeeJ.K. Eng. Res. Inst., GyeongSang Nat’l Univ., Jinju, 660-701, S. Korea Kyungnam University, Korea Chosun University, Korea 24082008 7 1 978-1-995850-08-5 1164 1167 24 August 2008 © 2008 Copyright WSSET 2008

As a relatively new material, geopolymer concrete offers the benefits as a construction material for sustainable development. It utilized waste materials such as recycled concrete sludge, fly ash and etc. It has a very low rate of green house gas emission when compared to ordinary Portland cement. In this study, the component of geopolymer is recycled concrete sludge, metakaolin and water glass, NaOH and KOH are used as alkaline activator. To improve the mechanical properties, silica fume is also added as a bonding matrix, and the specimens are cured in the air, after that their mechanical properties like compressive strength and bending strength is measured and the microstructures are investigated by SEM as well.

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