Performance of unbound pavement materials in changing moisture conditions

Marit Fladvad; Sigurdur Erlingsson

doi:10.1007/978-3-030-55236-7_8

Performance of unbound pavement materials in changing moisture conditions

Marit Fladvad^*, Sigurdur Erlingsson

^*Corresponding author for this work

Faculty of Civil and Environmental Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Expected climate changes will in many areas represent a shift towards increased precipitation and more intense rainfall events. This may lead to increased moisture within road structures and possible overloading of road drainage systems. Pavement design methods must therefore be able to predict the behaviour of pavement materials at increased moisture levels. An instrumented accelerated pavement test (APT) has been conducted on two thin flexible pavement structures with coarse-grained unbound base course and subbase materials using a heavy vehicle simulator (HVS). The two pavement structures were identical except for the grain size distribution of the subbase material, where one had a dense 0/90 mm curve with a controlled fines content, and the other had an open-graded 22/90 mm curve. The APT was conducted using constant dual wheel loading, and three different groundwater levels were induced in order to change the moisture content in the structures. The HVS was stopped regularly for carrying out response measurements from the instrumentation. The analysis is focussed on the response and the performance of the unbound aggregate layers to varying moisture levels in the pavement structure.

Original language	English
Title of host publication	Accelerated Pavement Testing to Transport Infrastructure Innovation - Proceedings of 6th APT Conference
Editors	Armelle Chabot, Pierre Hornych, John Harvey, Luis Guillermo Loria-Salazar
Publisher	Springer
Pages	70-79
Number of pages	10
ISBN (Print)	9783030552350
DOIs	https://doi.org/10.1007/978-3-030-55236-7_8
Publication status	Published - 2020
Event	6th International Conference on Accelerated Pavement Testing, APT 2021 - Nantes, France Duration: 27 Sept 2021 → 29 Sept 2021

Publication series

Name	Lecture Notes in Civil Engineering
Volume	96 LNCE
ISSN (Print)	2366-2557
ISSN (Electronic)	2366-2565

Conference

Conference	6th International Conference on Accelerated Pavement Testing, APT 2021
Country/Territory	France
City	Nantes
Period	27/09/21 → 29/09/21

Bibliographical note

Publisher Copyright:
© Springer Nature Switzerland AG 2020.

Other keywords

Accelerated pavement test
Groundwater table
Heavy vehicle simulator
Moisture content

Access to Document

10.1007/978-3-030-55236-7_8

Cite this

Fladvad, M., & Erlingsson, S. (2020). Performance of unbound pavement materials in changing moisture conditions. In A. Chabot, P. Hornych, J. Harvey, & L. G. Loria-Salazar (Eds.), Accelerated Pavement Testing to Transport Infrastructure Innovation - Proceedings of 6th APT Conference (pp. 70-79). (Lecture Notes in Civil Engineering; Vol. 96 LNCE). Springer. https://doi.org/10.1007/978-3-030-55236-7_8

Fladvad, Marit ; Erlingsson, Sigurdur. / Performance of unbound pavement materials in changing moisture conditions. Accelerated Pavement Testing to Transport Infrastructure Innovation - Proceedings of 6th APT Conference. editor / Armelle Chabot ; Pierre Hornych ; John Harvey ; Luis Guillermo Loria-Salazar. Springer, 2020. pp. 70-79 (Lecture Notes in Civil Engineering).

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title = "Performance of unbound pavement materials in changing moisture conditions",

abstract = "Expected climate changes will in many areas represent a shift towards increased precipitation and more intense rainfall events. This may lead to increased moisture within road structures and possible overloading of road drainage systems. Pavement design methods must therefore be able to predict the behaviour of pavement materials at increased moisture levels. An instrumented accelerated pavement test (APT) has been conducted on two thin flexible pavement structures with coarse-grained unbound base course and subbase materials using a heavy vehicle simulator (HVS). The two pavement structures were identical except for the grain size distribution of the subbase material, where one had a dense 0/90 mm curve with a controlled fines content, and the other had an open-graded 22/90 mm curve. The APT was conducted using constant dual wheel loading, and three different groundwater levels were induced in order to change the moisture content in the structures. The HVS was stopped regularly for carrying out response measurements from the instrumentation. The analysis is focussed on the response and the performance of the unbound aggregate layers to varying moisture levels in the pavement structure.",

keywords = "Accelerated pavement test, Groundwater table, Heavy vehicle simulator, Moisture content",

author = "Marit Fladvad and Sigurdur Erlingsson",

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year = "2020",

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Fladvad, M & Erlingsson, S 2020, Performance of unbound pavement materials in changing moisture conditions. in A Chabot, P Hornych, J Harvey & LG Loria-Salazar (eds), Accelerated Pavement Testing to Transport Infrastructure Innovation - Proceedings of 6th APT Conference. Lecture Notes in Civil Engineering, vol. 96 LNCE, Springer, pp. 70-79, 6th International Conference on Accelerated Pavement Testing, APT 2021, Nantes, France, 27/09/21. https://doi.org/10.1007/978-3-030-55236-7_8

Performance of unbound pavement materials in changing moisture conditions. / Fladvad, Marit; Erlingsson, Sigurdur.
Accelerated Pavement Testing to Transport Infrastructure Innovation - Proceedings of 6th APT Conference. ed. / Armelle Chabot; Pierre Hornych; John Harvey; Luis Guillermo Loria-Salazar. Springer, 2020. p. 70-79 (Lecture Notes in Civil Engineering; Vol. 96 LNCE).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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Performance of unbound pavement materials in changing moisture conditions

Abstract

Publication series

Conference

Bibliographical note

Other keywords

Access to Document

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Cite this