Journal of Material Cycles and Waste Management

, Volume 12, Issue 4, pp 275–282 | Cite as

Properties of alkali-activated systems with stone powder sludge

  • Se Jin Choi
  • Ssang Sun Jun
  • Jae Eun Oh
  • Paulo J. M. Monteiro
Special Feature: Original Article


This article investigates the effects of stone powder sludge on the microstructure and strength development of alkali-activated fly ash and blast furnace slag mixes. Stone powder sludge produced from a crushed aggregate factory was used to replace fly ash and granulated blast furnace slag at replacement ratios of 0%, 10%, 20%, and 30% by mass. The unit weight and compressive strength of the samples were measured, and scanning electron microscopy/energy dispersive spectroscopy and X-ray diffraction (XRD) analyses were performed. The test results indicated that the compressive strength of alkali-activated blast furnace slag mixes using stone powder sludge was higher than that of the alkali-activated blast furnace slag control mix, but the compressive strength of alkali-activated fly ash mixes decreased with increasing replacement ratio of stone powder sludge. Microscopy results indicated that for alkaliactivated blast furnace slag samples, broken surfaces were more evident than for the alkali-activated fly ash samples. For all XRD diagrams, broad and diffuse peaks were observed around 2θ = 35° (d = 2.96–3.03 Å), implying amorphous or short-ordering structure phases.

Key words

Stone powder sludge Fly ash Granulated blast furnace slag Compressive strength Microstructure 


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Copyright information

© Springer Japan 2010

Authors and Affiliations

  • Se Jin Choi
    • 1
  • Ssang Sun Jun
    • 2
  • Jae Eun Oh
    • 3
  • Paulo J. M. Monteiro
    • 3
  1. 1.SAMPYO R&D CenterSeoulRepublic of Korea
  2. 2.Korea Maritime UniversityBusanRepublic of Korea
  3. 3.University of CaliforniaBerkeleyUSA

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