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Ekblad, J. & Lundström, R. (2018). Causes of rutting in flexible and semi-rigid test sections after 14 years of service. International Journal on Road Materials and Pavement Design, 19(4), 878-897
Open this publication in new window or tab >>Causes of rutting in flexible and semi-rigid test sections after 14 years of service
2018 (English)In: International Journal on Road Materials and Pavement Design, ISSN 1468-0629, E-ISSN 2164-7402, Vol. 19, no 4, p. 878-897Article in journal (Refereed) Published
Abstract [en]

Rutting is a major distress and is commonly targeted in design-build contracts as a key requirement, but at the same time, contemporary design methods usually provide scarce information on evolution in absolute terms. The objective of this paper is to investigate and analyse rutting results from a large full-scale road test. The analyses concerned magnitudes and the causes of rutting with a main focus on flexible and semi-rigid structures: one Reference, one high-performance asphalt (HPA) and one asphalt on a lean concrete (LC) base. Field measurements and sampling for the current study comprised acquiring transversal profiles and coring pavement samples. The results suggest that for the HPA and the LC base pavements, rutting is mainly caused by studded tyre wear and densification of the asphalt layers. For the conventional reference pavement additional rutting, most likely in the lower layers, was noted.

Place, publisher, year, edition, pages
Taylor & Francis, 2018
Keywords
semi-rigid, flexible, performance, rutting, studded tyres, splitt mastix asphalt, SMA
National Category
Infrastructure Engineering
Identifiers
urn:nbn:se:kth:diva-240249 (URN)10.1080/14680629.2017.1281151 (DOI)000435512100008 ()2-s2.0-85010934393 (Scopus ID)
Note

QC 20181213

Available from: 2018-12-13 Created: 2018-12-13 Last updated: 2018-12-13Bibliographically approved
Ekblad, J. & Isacsson, U. (2008). Water in coarse granular materials: Resilient and retentive properties. In: Ellis, E Yu, HS McDowell, G Dawson, A Thom, N (Ed.), ADVANCES IN TRANSPORTATION GEOTECHNICS: . Paper presented at 1st International Conference on Transportation Geotechnics, ICTG-1; Nottingham; United Kingdom; 25 August 2008 through 27 August 2008 (pp. 117-+). CRC PRESS-TAYLOR & FRANCIS GROUP
Open this publication in new window or tab >>Water in coarse granular materials: Resilient and retentive properties
2008 (English)In: ADVANCES IN TRANSPORTATION GEOTECHNICS / [ed] Ellis, E Yu, HS McDowell, G Dawson, A Thom, N, CRC PRESS-TAYLOR & FRANCIS GROUP , 2008, p. 117-+Conference paper, Published paper (Refereed)
Abstract [en]

Granular material is, perhaps the most common construction material used in civil engineering, being an important constituent in road constructions, railways, embankments, foundations, buildings etc. This paper presents results from triaxial testing, at various water contents using constant confining pressure, of two different continuously graded granular materials with maximum particle size 90 mm and 63 mm, respectively. Furthermore, water retention properties of the unbound materials are presented and examples of water distributions in a common construction are shown. From the results presented, it can be concluded that increased water contents cause a reduction in resilient modulus and an increase in strain ratio. The distribution of water content in the vertical direction is highly nonlinear and the degree of saturation in the unbound layers of a road construction depends to a large degree on the level of the water table.

Place, publisher, year, edition, pages
CRC PRESS-TAYLOR & FRANCIS GROUP, 2008
National Category
Civil Engineering
Identifiers
urn:nbn:se:kth:diva-242914 (URN)000268179100014 ()2-s2.0-79952298173 (Scopus ID)
Conference
1st International Conference on Transportation Geotechnics, ICTG-1; Nottingham; United Kingdom; 25 August 2008 through 27 August 2008
Note

QC 20190212

Available from: 2019-02-12 Created: 2019-02-12 Last updated: 2019-02-12Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-7692-714x

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