Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Potential for acid leachate formation from air-cooled blast-furnace slag used in road construction
Luleå tekniska universitet.
2009 (English)Conference paper, Oral presentation only (Other academic)
Abstract [en]

Air-cooled blast-furnace slag (ACBFS) has suitable physical properties for use as an unbound aggregate in road bases. Results of laboratory leaching tests have also indicated that ACBFS can be used without posing any risk of negative environmental impacts. However, monitoring of drainages from a full-scale road test section with ACBFS has indicated that acid leachates (pH<6) with associated increased releases of constituents can occur under field conditions. In this paper, the potential and responsible mechanisms for acid leachate formation from ACBFS used in road construction are discussed. Analysis of a 10-year time series of drainage samples and 12 year old ACBFS from the road section indicates that acidity might develop from the oxidation of reduced sulphides released from the ACBFS. Currently, the impact of intermittent wetting and drying conditions on the weathering of minerals and leaching over time from ACBFS is investigated under controlled laboratory conditions to verify the field observations. A combination of chemical and mineralogical analyses is used to analyse the results.

Place, publisher, year, edition, pages
2009.
National Category
Other Environmental Engineering
Research subject
Waste Science and Technology
Identifiers
URN: urn:nbn:se:ltu:diva-31951Local ID: 645c0280-b8b0-11de-b769-000ea68e967bOAI: oai:DiVA.org:ltu-31951DiVA: diva2:1005185
Conference
International Conference on the Environmental and Technical Implications of Construction with Alternative Materials : 03/06/2009 - 05/06/2009
Note
Godkänd; 2009; Bibliografisk uppgift: Værtspublikationsredaktører: Jacques Mehu; 20091014 (ysko)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved

Open Access in DiVA

fulltext(10380 kB)5 downloads
File information
File name FULLTEXT01.pdfFile size 10380 kBChecksum SHA-512
b62569676238cd89ea70ae5fa667c4a6e0b26ea52fde729e25b9a3a4f6f27f03500c5d865b6f9ac59c5e4ad413aac0be3c0bb999fa8858e57837bde7dc350d1f
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Lidelöw, Sofia
Other Environmental Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 5 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 30 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf