Comparative Evaluation of Subgrade Resilient Modulus from Non-destructive, In-situ, and Laboratory Methods

Comparative Evaluation of Subgrade Resilient Modulus from Non-destructive, In-situ, and Laboratory Methods
Title Comparative Evaluation of Subgrade Resilient Modulus from Non-destructive, In-situ, and Laboratory Methods PDF eBook
Author
Publisher
Pages 96
Release 2007
Genre Pavements
ISBN

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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.

Estimating Stiffness of Subgrade and Unbound Materials for Pavement Design

Estimating Stiffness of Subgrade and Unbound Materials for Pavement Design
Title Estimating Stiffness of Subgrade and Unbound Materials for Pavement Design PDF eBook
Author Anand J. Puppala
Publisher Transportation Research Board
Pages 139
Release 2008
Genre Technology & Engineering
ISBN 0309098114

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At head of title: National Cooperative Highway Research Program.

Advances in Transportation Geotechnics IV

Advances in Transportation Geotechnics IV
Title Advances in Transportation Geotechnics IV PDF eBook
Author Erol Tutumluer
Publisher Springer Nature
Pages 976
Release 2021-09-05
Genre Science
ISBN 3030772349

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This volume presents selected papers presented during the 4th International Conference on Transportation Geotechnics. The papers address the geotechnical challenges in design, construction, maintenance, monitoring, and upgrading of roads, railways, airfields, and harbor facilities and other ground transportation infrastructure with the goal of providing safe, economic, environmental, reliable and sustainable infrastructures. This volume will be of interest to postgraduate students, academics, researchers, and consultants working in the field of civil and transport infrastructure.

Information Technology in Geo-Engineering

Information Technology in Geo-Engineering
Title Information Technology in Geo-Engineering PDF eBook
Author António Gomes Correia
Publisher Springer Nature
Pages 925
Release 2019-09-24
Genre Science
ISBN 3030320294

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These proceedings address the latest developments in information communication and technologies for geo-engineering. The 3rd International Conference on Information Technology in Geo-Engineering (ICITG 2019), held in Guimarães, Portugal, follows the previous successful installments of this conference series in Durham (2014) and Shanghai (2010). The respective chapters cover the following: Use of information and communications technologies Big data and databases Data mining and data science Imaging technologies Building information modelling applied to geo-structures Artificial intelligence Smart geomaterials and intelligent construction Sensors and monitoring Asset management Case studies on design, construction and maintenance Given its broad range of coverage, the book will benefit students, educators, researchers and professional practitioners alike, encouraging these readers to help take the geo-engineering community into the digital age

Annual Report

Annual Report
Title Annual Report PDF eBook
Author Louisiana Transportation Research Center
Publisher
Pages 26
Release 2008
Genre Transportation
ISBN

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Nondestructive Testing of Pavements and Backcalculation of Moduli

Nondestructive Testing of Pavements and Backcalculation of Moduli
Title Nondestructive Testing of Pavements and Backcalculation of Moduli PDF eBook
Author Shiraz D. Tayabji
Publisher ASTM International
Pages 534
Release 2000
Genre Materials
ISBN 0803128584

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As with the previous two symposia, the 32 papers from the June/July, 1999, Seattle symposium present advances in the nondestructive testing of pavements using conventional falling weight deflectometer techniques and other promising techniques such as ground penetrating radar, rolling weight deflecto

Soil Testing, Soil Stability and Ground Improvement

Soil Testing, Soil Stability and Ground Improvement
Title Soil Testing, Soil Stability and Ground Improvement PDF eBook
Author Wissem Frikha
Publisher Springer
Pages 421
Release 2017-07-11
Genre Science
ISBN 3319619020

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Earthwork projects are critical components in civil construction and often require detailed management techniques and unique solution methods to address failures. Being earth bound, earthwork is influenced by geomaterial properties at the onset of a project. Hence, an understanding of the in-situ soil properties is essential. Slope stability is a common problem facing earthwork construction, such as excavations and shored structures. Analytical methods for slope stability remain critical for researchers due to the mechanical complexity of the system. Striving for better earthwork project managements, the geotechnical engineering community continues to find improved testing techniques for determining sensitive properties of soil and rock, including stress-wave based, non-destructive testing methods. To minimize failure during earthwork construction, past case studies and data may reveal useful lessons and information to improve project management and minimize economic losses. This volume is part of the proceedings of the 1st GeoMEast International Congress and Exhibition on Sustainable Civil Infrastructures, Egypt 2017.