Abstract
The feasibility of using woody biomass fly ash (WBFA) as a mineral admixture in cement-based materials was investigated. This fly ash was characterized for chemical composition and used to prepare a cement blend with 70 wt% Portland cement and 30 wt% WBFA. Cubic specimens were cast from a blended cement paste (water-to-binder ratio 0.50) and, after 28 days of curing at 20°C and 100% relative humidity, these specimens were tested for heavy metal leachability through the use of a sequential leaching protocol, at a constant pH of leachant (deionized water; pH 6.0). It was found that, except for the chloride content, the WBFA is able to meet the European chemical requirements established for reuse of coal fly ash in cement-based materials. Although the WBFA is characterized by a significant content of heavy metals of particular environmental concern (Cd, Cr, Cu, Ni, Pb, Zn), the results of the monolith leaching test have shown a good immobilization capacity of such metals by the cementitious matrix and, consequently, a good environmental quality of the blended cement investigated.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Berra M, Mangialardi T, Paolini AE, Turriziani R (1992) Effect of fly ash on alkali-silica reaction. In: Poole AB (ed) Proceedings of the 9th international conference on alkali-silica reaction in concrete, vol I. Concrete Society Publication, London, pp 61–70
Building Materials Decree (1995), bouwstoffenbesluit, nr. 12689/165, The Netherlands Ministry of Housing, Spatial Planning and the Environment VROM
Commission of the European Communities (2000) Establishing a list of wastes pursuant to Article 1(a) of Council Directive 75/442/EEC on waste and Council Decision 94/904/EC establishing a list of hazardous waste pursuant to Article 1(4) of Council Directive 91/689/EEC on hazardous waste. Official Journal of the European Communities L 226/3
Dutch Standardization Institute (1995) NEN 7345 Leaching characteristics of soil and stony building and waste materials – leaching tests – Determination of the leaching of inorganic components from building and monolithic materials with the diffusion test
GSE, Gestore Servizi Elettrici (2009) “Le biomasse e i rifiuti – Dati statistici al 31/12/2008” Ufficio statistiche. http://www.gse.it/attivita/statistiche/Documents/Biomasse%20e%20Rifiuti%202009.pdf
Lima AT, Ottosen LM, Pedersen AJ, Ribeiro AB (2008) Characterization of fly ash from bio and municipal waste. Biomass Bioenergy 32:277–282
Lokare SS, Dunaway JD, Moulton D, Rogers D, Tree DR, Baxter LL (2006) Investigation of ash deposition rates for a suite of biomass fuels and fuel blends. Energy Fuel 20:1008–1014
Rajamma R, Ball RJ, Tarelho LAC, Allen GC, Labrincha JA, Ferreira VM (2009) Characterisation and use of biomass fly ash in cement-based materials. J Hazard Mater 172:1049–1060
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2011 Springer-Verlag Berlin Heidelberg
About this chapter
Cite this chapter
Berra, M. et al. (2011). Reuse of Woody Biomass Fly Ash in Cement-Based Materials: Leaching Tests. In: Insam, H., Knapp, B. (eds) Recycling of Biomass Ashes. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-19354-5_10
Download citation
DOI: https://doi.org/10.1007/978-3-642-19354-5_10
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-19353-8
Online ISBN: 978-3-642-19354-5
eBook Packages: Biomedical and Life SciencesBiomedical and Life Sciences (R0)