Experimental simulation and quantification of migration of subgrade soil into subbase under rigid pavement using model mobile load simulator

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Rigid pavement structure typically consists of a surface layer (concrete), underlying granular layers (subbase and/or base), and a compacted subgrade soil layer. Because the subgrade is saturated during wet seasons, cyclic loading caused by heavy traffic may lead to pumping of fine particles from the subgrade into the granular layers, redistribution of materials underneath the slabs, and gradual ejection of materials through pavement joints. This phenomenon results in faulting and can be a major contributor to pavement failure in wet regions. The objective of this study was to simulate and quantify the migration of subgrade soil into the subbase at rigid pavement joints. The cyclic traffic loading was simulated on a geometrically scaled model of rigid interstate highway pavement using a one-third-scale model mobile load simulator (MMLS3), an accelerated pavement testing device. Nonplastic saturated silt and partially saturated aggregate subbase were used as subgrade and subbase layers, respectively. The results indicated a significant amount of fines migration into the subbase under repeated traffic loading. The subgrade soil migration in mass percentage increased with the simulated traffic loading cycles. More fines accumulated in the subbase beneath the approach slab than beneath the leave slab. Faulting was observed and is another indication of fine particles migration. The migration of subgrade soil into the subbase also varied with the depth in the subbase; more fines accumulated in the lower section (closer to the subgrade) than in the upper section of the subbase.

Original languageEnglish (US)
Article number04018049
JournalJournal of Transportation Engineering Part B: Pavements
Volume144
Issue number4
DOIs
StatePublished - Dec 1 2018

Fingerprint

quantification
Pavements
Simulators
migration
Soils
simulation
traffic
Faulting
redistribution
Silt
Highway systems
indication
Concretes
Testing

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Transportation

Cite this

@article{190a099ba86a4ff6aec2775c456ba3d0,
title = "Experimental simulation and quantification of migration of subgrade soil into subbase under rigid pavement using model mobile load simulator",
abstract = "Rigid pavement structure typically consists of a surface layer (concrete), underlying granular layers (subbase and/or base), and a compacted subgrade soil layer. Because the subgrade is saturated during wet seasons, cyclic loading caused by heavy traffic may lead to pumping of fine particles from the subgrade into the granular layers, redistribution of materials underneath the slabs, and gradual ejection of materials through pavement joints. This phenomenon results in faulting and can be a major contributor to pavement failure in wet regions. The objective of this study was to simulate and quantify the migration of subgrade soil into the subbase at rigid pavement joints. The cyclic traffic loading was simulated on a geometrically scaled model of rigid interstate highway pavement using a one-third-scale model mobile load simulator (MMLS3), an accelerated pavement testing device. Nonplastic saturated silt and partially saturated aggregate subbase were used as subgrade and subbase layers, respectively. The results indicated a significant amount of fines migration into the subbase under repeated traffic loading. The subgrade soil migration in mass percentage increased with the simulated traffic loading cycles. More fines accumulated in the subbase beneath the approach slab than beneath the leave slab. Faulting was observed and is another indication of fine particles migration. The migration of subgrade soil into the subbase also varied with the depth in the subbase; more fines accumulated in the lower section (closer to the subgrade) than in the upper section of the subbase.",
author = "Behnoud Kermani and Stoffels, {Shelley Marie} and Ming Xiao and Tong Qiu",
year = "2018",
month = "12",
day = "1",
doi = "10.1061/JPEODX.0000078",
language = "English (US)",
volume = "144",
journal = "Journal of Transportation Engineering Part B: Pavements",
issn = "2573-5438",
publisher = "American Society of Civil Engineers (ASCE)",
number = "4",

}

TY - JOUR

T1 - Experimental simulation and quantification of migration of subgrade soil into subbase under rigid pavement using model mobile load simulator

AU - Kermani, Behnoud

AU - Stoffels, Shelley Marie

AU - Xiao, Ming

AU - Qiu, Tong

PY - 2018/12/1

Y1 - 2018/12/1

N2 - Rigid pavement structure typically consists of a surface layer (concrete), underlying granular layers (subbase and/or base), and a compacted subgrade soil layer. Because the subgrade is saturated during wet seasons, cyclic loading caused by heavy traffic may lead to pumping of fine particles from the subgrade into the granular layers, redistribution of materials underneath the slabs, and gradual ejection of materials through pavement joints. This phenomenon results in faulting and can be a major contributor to pavement failure in wet regions. The objective of this study was to simulate and quantify the migration of subgrade soil into the subbase at rigid pavement joints. The cyclic traffic loading was simulated on a geometrically scaled model of rigid interstate highway pavement using a one-third-scale model mobile load simulator (MMLS3), an accelerated pavement testing device. Nonplastic saturated silt and partially saturated aggregate subbase were used as subgrade and subbase layers, respectively. The results indicated a significant amount of fines migration into the subbase under repeated traffic loading. The subgrade soil migration in mass percentage increased with the simulated traffic loading cycles. More fines accumulated in the subbase beneath the approach slab than beneath the leave slab. Faulting was observed and is another indication of fine particles migration. The migration of subgrade soil into the subbase also varied with the depth in the subbase; more fines accumulated in the lower section (closer to the subgrade) than in the upper section of the subbase.

AB - Rigid pavement structure typically consists of a surface layer (concrete), underlying granular layers (subbase and/or base), and a compacted subgrade soil layer. Because the subgrade is saturated during wet seasons, cyclic loading caused by heavy traffic may lead to pumping of fine particles from the subgrade into the granular layers, redistribution of materials underneath the slabs, and gradual ejection of materials through pavement joints. This phenomenon results in faulting and can be a major contributor to pavement failure in wet regions. The objective of this study was to simulate and quantify the migration of subgrade soil into the subbase at rigid pavement joints. The cyclic traffic loading was simulated on a geometrically scaled model of rigid interstate highway pavement using a one-third-scale model mobile load simulator (MMLS3), an accelerated pavement testing device. Nonplastic saturated silt and partially saturated aggregate subbase were used as subgrade and subbase layers, respectively. The results indicated a significant amount of fines migration into the subbase under repeated traffic loading. The subgrade soil migration in mass percentage increased with the simulated traffic loading cycles. More fines accumulated in the subbase beneath the approach slab than beneath the leave slab. Faulting was observed and is another indication of fine particles migration. The migration of subgrade soil into the subbase also varied with the depth in the subbase; more fines accumulated in the lower section (closer to the subgrade) than in the upper section of the subbase.

UR - http://www.scopus.com/inward/record.url?scp=85053782760&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85053782760&partnerID=8YFLogxK

U2 - 10.1061/JPEODX.0000078

DO - 10.1061/JPEODX.0000078

M3 - Article

AN - SCOPUS:85053782760

VL - 144

JO - Journal of Transportation Engineering Part B: Pavements

JF - Journal of Transportation Engineering Part B: Pavements

SN - 2573-5438

IS - 4

M1 - 04018049

ER -