Study of Backcalculated Pavement Layer Moduli from the LTPP Database

doi:10.6180/jase.2010.13.2.04

機構典藏 > College of Engineering > Graduate Institute & Department of Civil Engineering > Journal Article > Item 987654321/52751

Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/52751

Title:	Study of Backcalculated Pavement Layer Moduli from the LTPP Database
Authors:	Lee, Ying-Haur;Ker, Hsiang-Wei;Lin, Chia-Huei;Wu, Pei-Hwa
Contributors:	淡江大學土木工程學系
Keywords:	Pavement;Backcalculation;Elastic Modulus;LTPP
Date:	2010-06-01
Issue Date:	2010-12-01 10:28:43 (UTC+8)
Publisher:	新北市：淡江大學
Abstract:	The main objective of this study was to investigate the fundamental principles of flexible and rigid pavement backcalculation methodologies and their potential limitations. The two-layer backcalculation approach proposed by the 1993 AASHTO Design Guide for the structural evaluation of existing pavements was also adopted. The laboratory tested (or static) layer moduli were compared with the backcalculated (or dynamic) moduli using the Long-Term Pavement Performance (LTPP) database. Relatively high variability between the relationships of the static and the dynamic moduli was observed indicating that further research study is needed to improve the current state-of-the-art backcalculation approach. In addition, it was also found that slab thickness did have significant effects on the relationship of the backcalculated subgrade elastic modulus and the backcalculated modulus of subgrade reaction. Subsequently, a revised regression model was proposed for future practical applications.
Relation:	淡江理工學刊=Tamkang Journal of Science and Engineering 13(2)，頁145-156
DOI:	10.6180/jase.2010.13.2.04
Appears in Collections:	[Graduate Institute & Department of Civil Engineering] Journal Article

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