Gyratory Compaction Method for Determining Density Requirements for Subgrade and Base of Flexible Pavements PDF Download

Author: Waterways Experiment Station (U.S.)
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 28

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Author: ASTM Committee D-18 on Soil and Rock. Subcommittee D-4 on Road and Paving Materials
Publisher: ASTM International
ISBN: 0803118651
Category : Fatigue
Languages : en
Pages : 528

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Book Description
The proceedings of June 1993 international symposium held in Atlanta, Georgia, called specifically to develop and standardized evaluation procedures for non-destructive methods of testing pavements. The 29 papers discuss analytical models and techniques, measurement and calculation techniques in the field and laboratory, problems and errors associated with backcalculation methods and design parameters, and testing for other pavement uses. Also includes a history of the quest for a standard and the status of that effort. Reproduced from typescripts. Annotation copyright by Book News, Inc., Portland, OR

Author:
Publisher:
ISBN:
Category : Subgrade
Languages : en
Pages : 76

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The impact hammer compaction has historically been used to develop moisture-density curves and fabricate specimens for strength testing for flexible base and subgrade materials. However, the precision of compressive strength results by the impact hammer compaction remains a concern that can result in conflicting test results on whether a material meets specification requirements. This project used the Superpave Gyratory Compactor (SGC) to analyze if SGC compaction enables improved precision of compressive strength tests for flexible base and subgrade materials and analyzed a procedure for determining the moisture-density curve of base and subgrade materials using the SGC. Also, the applicability of SGC for base materials was evaluated in context of mechanistic-empirical (M-E) pavement design methods. The results showed that SGC compaction produced compressive strength results with less variability and improved precision compared to impact hammer compaction. Also, from the measurement of M-E properties, base materials compacted with the SGC were associated with lower permanent strain and higher resilient modulus than the materials with the impact hammer. The evaluation of internal structure using X-ray Compute Tomography and Aggregate Image Measurement System helped explain the behavior ofmaterials compacted with both impact hammer and SGC compaction methods.

Author: William B. Abbott
Publisher:
ISBN:
Category : Clay
Languages : en
Pages : 66

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Author:
Publisher:
ISBN:
Category : Pavements, Bituminous
Languages : en
Pages : 126

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Author: William B. Fenwick
Publisher:
ISBN:
Category : Compacting
Languages : en
Pages : 54

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Author: Waterways Experiment Station (U.S.)
Publisher:
ISBN:
Category : Aggregates (Building materials).
Languages : en
Pages : 66

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Author: Erol Tutumluer
Publisher: CRC Press
ISBN: 0203865286
Category : Technology & Engineering
Languages : en
Pages : 1560

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Bearing Capacity of Roads, Railways and Airfields focuses on issues pertaining to the bearing capacity of highway and airfield pavements and railroad track structures and provided a forum to promote efficient design, construction and maintenance of the transportation infrastructure. The collection of papers from the Eighth International Conference

Author: U.S. Army Engineer Waterways Experiment Station
Publisher:
ISBN:
Category : Hydraulic engineering
Languages : en
Pages : 430

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Author: United States. Army. Corps of Engineers
Publisher:
ISBN:
Category :
Languages : en
Pages : 130

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