• norsk
    • English
  • English 
    • norsk
    • English
  • Login
View Item 
  •   Home
  • SINTEF
  • Publikasjoner fra CRIStin
  • Publikasjoner fra CRIStin - SINTEF AS
  • View Item
  •   Home
  • SINTEF
  • Publikasjoner fra CRIStin
  • Publikasjoner fra CRIStin - SINTEF AS
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

The effect of additives on the properties of lightweight aggregates produced from clay

Bernhardt, Markus; Justnes, Harald; Tellesbø, Hilde; Wiik, Kjell
Journal article, Peer reviewed
Accepted version
Thumbnail
View/Open
Acceptet manuscript; The effect of additives on the properties of lightweight aggregates produced from clay (847.8Kb)
Intern (Locked)
Intern (Locked)
URI
http://hdl.handle.net/11250/2463033
Date
2014
Metadata
Show full item record
Collections
  • Publikasjoner fra CRIStin - SINTEF AS [4386]
  • SINTEF Community [2043]
Original version
Cement & Concrete Composites. 2014, 53 (Oct), 233-238.   10.1016/j.cemconcomp.2014.07.005
Abstract
In an attempt to improve the properties, lightweight aggregates were produced from clay with the addition of Na2CO3, SiO2, Fe2O3, and Fe in quantities between 2 and 10 wt% and examined with respect to strength, density and expansion behavior. The additives were mixed into dry clay powder, water was added and pellets were formed by hand and fired at 1120 °C in a chamber furnace. Particle densities of the products ranged from 0.31 to 0.57 g/cm3, porosities from 78% to 89% and the solid strength from 0.54 to 1.58 MPa. The addition of Na2CO3 proved to decrease the viscosity of the glass phase at the surface of the pellets but resulted in a reduced expansion, irregular shape and pellets sticking together. SiO2 addition did not give any major change in properties. The addition of Fe2O3 increased the pore size in the center of the pellets, however with insignificant change in strength and density. Adding 5 wt% metallic iron powder led to LWA pellets with increased porosity, reduced density, larger pores and low mechanical strength and could be a useful additive in applications where low density is more important than strength.
Publisher
ScienceDirect
Journal
Cement & Concrete Composites
Copyright
© Preprint version the authors. This is the authors' accepted and manuscript to the article. The final publication is available at https://doi.org/10.1016/j.cemconcomp.2014.07.005

Contact Us | Send Feedback

Privacy policy
DSpace software copyright © 2002-2019  DuraSpace

Service from  Unit
 

 

Browse

ArchiveCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsDocument TypesJournalsThis CollectionBy Issue DateAuthorsTitlesSubjectsDocument TypesJournals

My Account

Login

Statistics

View Usage Statistics

Contact Us | Send Feedback

Privacy policy
DSpace software copyright © 2002-2019  DuraSpace

Service from  Unit