Local Stiffness Quantification of Geogrid Stabilized Aggregates in Relation to Deformation Behavior

Yong Hoon Byun; Erol Tutumluer

doi:10.1007/978-981-13-0011-0_12

Local Stiffness Quantification of Geogrid Stabilized Aggregates in Relation to Deformation Behavior

Yong Hoon Byun, Erol Tutumluer

Department of Agricutural civil engineering

University of Illinois at Urbana-Champaign

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

2 Scopus citations

Abstract

Permanent deformation accumulation is one of the most critical damage mechanisms of unbound aggregate base layer. However, the effect of stress state on permanent deformation behavior of flexible pavement is not clearly known. This study presents the variation in the shear modulus of geogrid reinforced/unreinforced aggregates according to permanent deformation behavior. To characterize the local stiffnesses near and far away from geogrid, two pairs of bender elements are inserted in triaxial specimens. As the number of repeated loading increases, the variation in the shear waves at two different heights is monitored. The test results show that, after the specimen preparation, the shear modulus near the geogrid is greater than that far away from the geogrid. The shear modulus estimated at both levels of unreinforced specimen is similar to that estimated far away from geogrid in the reinforced specimen. This study demonstrates that the local stiffness of aggregate can be monitored by using the bender elements under permanent deformation behavior, and suggests the bender element systems can be effectively used to validate the effect of geogrid reinforcement under permanent deformation behavior.

Original language	English
Title of host publication	Proceedings of GeoShanghai 2018 International Conference
Subtitle of host publication	Transportation Geotechnics and Pavement Engineering
Editors	Xianming Shi, Zhen Liu, Jenny Liu
Publisher	Springer
Pages	109-114
Number of pages	6
ISBN (Print)	9789811300103
DOIs	https://doi.org/10.1007/978-981-13-0011-0_12
State	Published - 2018
Event	4th GeoShanghai International Conference - Transportation Geotechnics and Pavement Engineering, GSIC 2018 - Shanghai, China Duration: 27 May 2018 → 30 May 2018

Publication series

Name	Proceedings of GeoShanghai 2018 International Conference: Transportation Geotechnics and Pavement Engineering

Conference

Conference	4th GeoShanghai International Conference - Transportation Geotechnics and Pavement Engineering, GSIC 2018
Country/Territory	China
City	Shanghai
Period	27/05/18 → 30/05/18

Keywords

Aggregate
Bender element
Geogrid
Permanent deformation
Shear wave

Access to Document

10.1007/978-981-13-0011-0_12

Cite this

Byun, Y. H., & Tutumluer, E. (2018). Local Stiffness Quantification of Geogrid Stabilized Aggregates in Relation to Deformation Behavior. In X. Shi, Z. Liu, & J. Liu (Eds.), Proceedings of GeoShanghai 2018 International Conference: Transportation Geotechnics and Pavement Engineering (pp. 109-114). (Proceedings of GeoShanghai 2018 International Conference: Transportation Geotechnics and Pavement Engineering). Springer. https://doi.org/10.1007/978-981-13-0011-0_12

Byun, Yong Hoon ; Tutumluer, Erol. / Local Stiffness Quantification of Geogrid Stabilized Aggregates in Relation to Deformation Behavior. Proceedings of GeoShanghai 2018 International Conference: Transportation Geotechnics and Pavement Engineering. editor / Xianming Shi ; Zhen Liu ; Jenny Liu. Springer, 2018. pp. 109-114 (Proceedings of GeoShanghai 2018 International Conference: Transportation Geotechnics and Pavement Engineering).

@inproceedings{8ed99ffd25394958afb172daa2d51f1b,

title = "Local Stiffness Quantification of Geogrid Stabilized Aggregates in Relation to Deformation Behavior",

abstract = "Permanent deformation accumulation is one of the most critical damage mechanisms of unbound aggregate base layer. However, the effect of stress state on permanent deformation behavior of flexible pavement is not clearly known. This study presents the variation in the shear modulus of geogrid reinforced/unreinforced aggregates according to permanent deformation behavior. To characterize the local stiffnesses near and far away from geogrid, two pairs of bender elements are inserted in triaxial specimens. As the number of repeated loading increases, the variation in the shear waves at two different heights is monitored. The test results show that, after the specimen preparation, the shear modulus near the geogrid is greater than that far away from the geogrid. The shear modulus estimated at both levels of unreinforced specimen is similar to that estimated far away from geogrid in the reinforced specimen. This study demonstrates that the local stiffness of aggregate can be monitored by using the bender elements under permanent deformation behavior, and suggests the bender element systems can be effectively used to validate the effect of geogrid reinforcement under permanent deformation behavior.",

keywords = "Aggregate, Bender element, Geogrid, Permanent deformation, Shear wave",

author = "Byun, {Yong Hoon} and Erol Tutumluer",

note = "Publisher Copyright: {\textcopyright} Springer Nature Singapore Pte Ltd. 2018.; 4th GeoShanghai International Conference - Transportation Geotechnics and Pavement Engineering, GSIC 2018 ; Conference date: 27-05-2018 Through 30-05-2018",

year = "2018",

doi = "10.1007/978-981-13-0011-0_12",

language = "English",

isbn = "9789811300103",

series = "Proceedings of GeoShanghai 2018 International Conference: Transportation Geotechnics and Pavement Engineering",

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pages = "109--114",

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booktitle = "Proceedings of GeoShanghai 2018 International Conference",

address = "Germany",

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Byun, YH & Tutumluer, E 2018, Local Stiffness Quantification of Geogrid Stabilized Aggregates in Relation to Deformation Behavior. in X Shi, Z Liu & J Liu (eds), Proceedings of GeoShanghai 2018 International Conference: Transportation Geotechnics and Pavement Engineering. Proceedings of GeoShanghai 2018 International Conference: Transportation Geotechnics and Pavement Engineering, Springer, pp. 109-114, 4th GeoShanghai International Conference - Transportation Geotechnics and Pavement Engineering, GSIC 2018, Shanghai, China, 27/05/18. https://doi.org/10.1007/978-981-13-0011-0_12

Local Stiffness Quantification of Geogrid Stabilized Aggregates in Relation to Deformation Behavior. / Byun, Yong Hoon; Tutumluer, Erol.
Proceedings of GeoShanghai 2018 International Conference: Transportation Geotechnics and Pavement Engineering. ed. / Xianming Shi; Zhen Liu; Jenny Liu. Springer, 2018. p. 109-114 (Proceedings of GeoShanghai 2018 International Conference: Transportation Geotechnics and Pavement Engineering).

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

TY - GEN

T1 - Local Stiffness Quantification of Geogrid Stabilized Aggregates in Relation to Deformation Behavior

AU - Byun, Yong Hoon

AU - Tutumluer, Erol

N1 - Publisher Copyright: © Springer Nature Singapore Pte Ltd. 2018.

PY - 2018

Y1 - 2018

N2 - Permanent deformation accumulation is one of the most critical damage mechanisms of unbound aggregate base layer. However, the effect of stress state on permanent deformation behavior of flexible pavement is not clearly known. This study presents the variation in the shear modulus of geogrid reinforced/unreinforced aggregates according to permanent deformation behavior. To characterize the local stiffnesses near and far away from geogrid, two pairs of bender elements are inserted in triaxial specimens. As the number of repeated loading increases, the variation in the shear waves at two different heights is monitored. The test results show that, after the specimen preparation, the shear modulus near the geogrid is greater than that far away from the geogrid. The shear modulus estimated at both levels of unreinforced specimen is similar to that estimated far away from geogrid in the reinforced specimen. This study demonstrates that the local stiffness of aggregate can be monitored by using the bender elements under permanent deformation behavior, and suggests the bender element systems can be effectively used to validate the effect of geogrid reinforcement under permanent deformation behavior.

AB - Permanent deformation accumulation is one of the most critical damage mechanisms of unbound aggregate base layer. However, the effect of stress state on permanent deformation behavior of flexible pavement is not clearly known. This study presents the variation in the shear modulus of geogrid reinforced/unreinforced aggregates according to permanent deformation behavior. To characterize the local stiffnesses near and far away from geogrid, two pairs of bender elements are inserted in triaxial specimens. As the number of repeated loading increases, the variation in the shear waves at two different heights is monitored. The test results show that, after the specimen preparation, the shear modulus near the geogrid is greater than that far away from the geogrid. The shear modulus estimated at both levels of unreinforced specimen is similar to that estimated far away from geogrid in the reinforced specimen. This study demonstrates that the local stiffness of aggregate can be monitored by using the bender elements under permanent deformation behavior, and suggests the bender element systems can be effectively used to validate the effect of geogrid reinforcement under permanent deformation behavior.

KW - Aggregate

KW - Bender element

KW - Geogrid

KW - Permanent deformation

KW - Shear wave

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U2 - 10.1007/978-981-13-0011-0_12

DO - 10.1007/978-981-13-0011-0_12

M3 - Conference contribution

AN - SCOPUS:85078314602

SN - 9789811300103

T3 - Proceedings of GeoShanghai 2018 International Conference: Transportation Geotechnics and Pavement Engineering

SP - 109

EP - 114

BT - Proceedings of GeoShanghai 2018 International Conference

A2 - Shi, Xianming

A2 - Liu, Zhen

A2 - Liu, Jenny

PB - Springer

T2 - 4th GeoShanghai International Conference - Transportation Geotechnics and Pavement Engineering, GSIC 2018

Y2 - 27 May 2018 through 30 May 2018

ER -

Byun YH, Tutumluer E. Local Stiffness Quantification of Geogrid Stabilized Aggregates in Relation to Deformation Behavior. In Shi X, Liu Z, Liu J, editors, Proceedings of GeoShanghai 2018 International Conference: Transportation Geotechnics and Pavement Engineering. Springer. 2018. p. 109-114. (Proceedings of GeoShanghai 2018 International Conference: Transportation Geotechnics and Pavement Engineering). doi: 10.1007/978-981-13-0011-0_12

Local Stiffness Quantification of Geogrid Stabilized Aggregates in Relation to Deformation Behavior

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Keywords

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