Author: Harold L. Von Quintus
Publisher:
ISBN:
Category : Pavements, Asphalt
Languages : en
Pages : 54
Book Description
The Kansas Department of Transportation (DOT) uses the 1993 DARWin version of the 1986 AASHTO Guide to design rigid and flexible pavements. One of the inputs needed for the flexible pavement design procedure is the modulus of the subgrade soils, which has an effect on the total pavement thickness. Different procedures can be used to estimate the effective roadbed resilient modulus for flexible pavement design and effective modulus of subgrade reaction for rigid pavement design. As part of the study entitled Determination of the Appropriate Use of Pavement Surface History in the KDOT Life-Cycle Cost Analysis Process, an evaluation of the procedure that Kansas DOT uses to estimate the effective subgrade resilient modulus was completed. This report provides the results of that evaluation.
Evaluation of Procedure to Estimate Subgrade Resilient Modulus for Use in Pavement Structural Design
Resilient Modulus Testing for Pavement Components
Author: Mary Stroup-Gardiner
Publisher: ASTM International
ISBN: 0803134614
Category : Pavements
Languages : en
Pages : 274
Book Description
"Resilient modulus indicates the stiffness of a soil under controlled confinement conditions and repeated loading. The test is intended to simulate the stress conditions that occur in the base and subgrade of a pavement system. Resilient modulus has been adopted by the U.S. federal highway administration as the primary performance parameter for pavement design. We thank those who prepared these papers, the reviewers who provided anonymous peer reviews, and those who participated in the symposium. We hope this STP encourages more work to improve the testing standard and the value of the Resilient Modulus test."
Publisher: ASTM International
ISBN: 0803134614
Category : Pavements
Languages : en
Pages : 274
Book Description
"Resilient modulus indicates the stiffness of a soil under controlled confinement conditions and repeated loading. The test is intended to simulate the stress conditions that occur in the base and subgrade of a pavement system. Resilient modulus has been adopted by the U.S. federal highway administration as the primary performance parameter for pavement design. We thank those who prepared these papers, the reviewers who provided anonymous peer reviews, and those who participated in the symposium. We hope this STP encourages more work to improve the testing standard and the value of the Resilient Modulus test."
Subgrade Resilient Modulus for Pavement Design and Evaluation
"Implementation of Subgrade Resilient Modulus for Pavement Design and Evaluation"
Author: A. G. Altschaeffl
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages :
Book Description
Subgrade Resilient Modulus Evaluation
Author: Steve Valdez
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 134
Book Description
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 134
Book Description
Evaluation of In-Situ Stiffness of Subgrade by Resilient and FWD Modulus
Author: Daehyeon Kim
Publisher:
ISBN: 9781622600380
Category :
Languages : en
Pages :
Book Description
Publisher:
ISBN: 9781622600380
Category :
Languages : en
Pages :
Book Description
Estimating Stiffness of Subgrade and Unbound Materials for Pavement Design
Author: Anand J. Puppala
Publisher: Transportation Research Board
ISBN: 0309098114
Category : Technology & Engineering
Languages : en
Pages : 139
Book Description
At head of title: National Cooperative Highway Research Program.
Publisher: Transportation Research Board
ISBN: 0309098114
Category : Technology & Engineering
Languages : en
Pages : 139
Book Description
At head of title: National Cooperative Highway Research Program.
Evaluation of Resilient Modulus for Fine Grained Subgrade Soils
Author: Dingqing Li
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 104
Book Description
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 104
Book Description
Simplification of Resilient Modulus Testing for Subgrades
Author: Daehyeon Kim
Publisher:
ISBN: 9781622601875
Category :
Languages : en
Pages :
Book Description
Publisher:
ISBN: 9781622601875
Category :
Languages : en
Pages :
Book Description
Comparative Evaluation of Subgrade Resilient Modulus from Non-destructive, In-situ, and Laboratory Methods
Author:
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 96
Book Description
Field and laboratory testing programs were conducted to develop models that predict the resilient modulus of subgrade soils from the test results of DCP, CIMCPT, FWD, Dynaflect, and soil properties. The field testing program included DCP, CIMCPT, FWD, and Dynaflect testing, whereas the laboratory program included repeated load triaxial resilient modulus tests and physical properties and compaction tests. Nine overlay rehabilitation pavement projects in Louisiana were selected. A total of four soil types (A-4, A-6, A-7-5, and A-7-6) were considered at different moisture-dry unit weight levels. The results of the laboratory and field testing programs were analyzed and critically evaluated. A comprehensive statistical analysis was conducted on the collected data. The results showed a good agreement between the predicted and measured resilient modulus from the various field test methods considered. The DCP and CIMCPT models were enhanced when the soil moisture content and dry unit weight were incorporated. The results also showed that, among all back calculated FWD moduli, those back calculated using ELMOD 5.1.69 software had the best correlation with the measured Mr. Finally, the Mr values estimated using the approach currently adopted by the LADOTD were found to correlate poorly with the measured Mr values.
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 96
Book Description
Field and laboratory testing programs were conducted to develop models that predict the resilient modulus of subgrade soils from the test results of DCP, CIMCPT, FWD, Dynaflect, and soil properties. The field testing program included DCP, CIMCPT, FWD, and Dynaflect testing, whereas the laboratory program included repeated load triaxial resilient modulus tests and physical properties and compaction tests. Nine overlay rehabilitation pavement projects in Louisiana were selected. A total of four soil types (A-4, A-6, A-7-5, and A-7-6) were considered at different moisture-dry unit weight levels. The results of the laboratory and field testing programs were analyzed and critically evaluated. A comprehensive statistical analysis was conducted on the collected data. The results showed a good agreement between the predicted and measured resilient modulus from the various field test methods considered. The DCP and CIMCPT models were enhanced when the soil moisture content and dry unit weight were incorporated. The results also showed that, among all back calculated FWD moduli, those back calculated using ELMOD 5.1.69 software had the best correlation with the measured Mr. Finally, the Mr values estimated using the approach currently adopted by the LADOTD were found to correlate poorly with the measured Mr values.