Effect evaluation of freeze-thaw on resilient modulus of unsaturated granular base course material in pavement

Ishikawa, Tatsuya; Lin, Tianshu; Kawabata, Shinichiro; Kameyama, Shuichi; Tokoro, Tetsuya

doi:10.1016/j.trgeo.2019.100284


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Effect evaluation of freeze-thaw on resilient modulus of unsaturated granular base course material in pavement

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Title:	Effect evaluation of freeze-thaw on resilient modulus of unsaturated granular base course material in pavement
Authors:	Ishikawa, Tatsuya Browse this author →KAKEN DB
	Lin, Tianshu Browse this author
	Kawabata, Shinichiro Browse this author
	Kameyama, Shuichi Browse this author
	Tokoro, Tetsuya Browse this author
Keywords:	Base course
	Resilient deformation characteristics
	Unsaturated soil
	Freeze-thaw action
	Laboratory element test
Issue Date:	Dec-2019
Publisher:	Elsevier
Journal Title:	Transportation geotechnics
Volume:	21
Start Page:	100284
Publisher DOI:	10.1016/j.trgeo.2019.100284
Abstract:	This study examines the effects of freeze-thaw and water content on the resilient deformation characteristics of subbase course materials to evaluate the mechanical behavior of granular base in cold regions. A series of resilient modulus tests on subbase course materials under various water contents were conducted using a newly developed test apparatus. Besides, the test results were compared with the results of freeze-thaw CBR tests and the long-term field measurement at a model pavement structure including FWD tests. As the results, it was revealed that the resilient deformation characteristics of unbound granular base materials (UGBMs) deteriorate due to freeze-thaw and increment of the water content in thawing season. This indicates that the freeze-thaw of granular base has a strong influence on the fatigue life of pavement structures.
Rights:	© <2019>. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Rights:	http://creativecommons.org/licenses/by-nc-nd/4.0/
Type:	article (author version)
URI:	http://hdl.handle.net/2115/83366
Appears in Collections:	工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 石川達也

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