Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • 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
Proposed gyratory compaction procedure for determining the optimal compaction characteristics of laterite gravels treated with foamed bitumen
KTH, School of Architecture and the Built Environment (ABE), Transport Science, Highway and Railway Engineering.
KTH, School of Architecture and the Built Environment (ABE), Transport Science, Highway and Railway Engineering.ORCID iD: 0000-0003-0889-6078
Department of Civil Engineering, Makerere University, Kampala, Uganda.
(English)Article in journal (Other academic) Submitted
Keyword [en]
foamed bitumen, gyratory compaction, locking concept, moisture content
National Category
Other Civil Engineering
Identifiers
URN: urn:nbn:se:kth:diva-33041OAI: oai:DiVA.org:kth-33041DiVA: diva2:413082
Note
QS 20120328Available from: 2011-04-27 Created: 2011-04-27 Last updated: 2012-03-28Bibliographically approved
In thesis
1. Some Aspects of Foamed Bitumen Technology
Open this publication in new window or tab >>Some Aspects of Foamed Bitumen Technology
2011 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Although foamed bitumen has been widely applied in pavement construction some of its aspects are still not yet understood. In this study, some of these aspects including: effects of the foaming process on binder chemistry, characterization of foamed bitumen and development of a rational method to optimize foam characteristics, evaluation of aggregate particle coating within foamed bitumen treated materials, and development of a gyratory compaction procedure for laterite gravels treated with foamed bitumen were addressed. The effects of the foaming process on bitumen chemistry were investigated using Fourier transform infrared spectroscopy techniques. Also, foam characteristics of three binders were established and a rational method to optimize foam characteristics proposed. Aggregate particle coating with foamed bitumen was studied using the concepts of surface energy and Rice density. In addition a gyratory laboratory compaction procedure for laterite gravels treated with foamed bitumen was established using the modified locking concept. Infrared techniques have shown that foaming does not cause any changes in the binder chemistry, suggesting that foaming may be a physical process. Further, foam characteristics are greatly influenced by binder viscosity. Also, the equiviscous temperature seems to produce foam with optimum foam characteristics. Rice density results showed that aggregate size fraction, binder expansion ratio and viscosity influenced aggregate particle coating. Surface energy results revealed that foamed bitumen exhibited better coating attributes than neat bitumen. A new compaction procedure for laterite gravels treated with foamed bitumen based on the modified locking point was developed.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2011. 52 p.
Series
Trita-VT. FR, ISSN 1650-867X
Keyword
Foamed bitumen, Aggregate coating, Rice density, Foam characteristics, Surface energy, Locking concept, Gyratory, Compaction, Optimum moisture content
National Category
Other Civil Engineering
Identifiers
urn:nbn:se:kth:diva-32944 (URN)978-91-7415-910-3 (ISBN)
Presentation
2011-04-28, M108, KTH, Brinellvägen 23, Stockholm, 09:00 (English)
Opponent
Supervisors
Note
QC 20110427Available from: 2011-04-27 Created: 2011-04-27 Last updated: 2012-02-23Bibliographically approved

Open Access in DiVA

No full text

Authority records BETA

Birgisson, Björn

Search in DiVA

By author/editor
Namutebi, MayBirgisson, Björn
By organisation
Highway and Railway Engineering
Other Civil Engineering

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 189 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • 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