Comparing Laboratory and Backcalculated Layer Moduli on Instrumented Pavement Sections PDF Download
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Author: T. Akram
Publisher:
ISBN:
Category : Backcalculation
Languages : en
Pages : 33
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Book Description
This paper discusses the analysis of deflection data on thick and thin asphaltic concrete pavement sections instrumented with Multidepth Deflectometers (HDD's). Surface and depth deflection data were collected under both Falling Weight Deflectometer (FWD) and truck loadings. Linear elastic analyses were performed to compare layer moduli backcalculation from; • FWD surface deflections only; and • FWD surface and depth deflections only.
Author: T. Akram
Publisher:
ISBN:
Category : Backcalculation
Languages : en
Pages : 33
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Book Description
This paper discusses the analysis of deflection data on thick and thin asphaltic concrete pavement sections instrumented with Multidepth Deflectometers (HDD's). Surface and depth deflection data were collected under both Falling Weight Deflectometer (FWD) and truck loadings. Linear elastic analyses were performed to compare layer moduli backcalculation from; • FWD surface deflections only; and • FWD surface and depth deflections only.
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: Shiraz D. Tayabji
Publisher: ASTM International
ISBN: 0803128584
Category : Materials
Languages : en
Pages : 534
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Book Description
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
Author: H. Zhou
Publisher:
ISBN:
Category : Aggregate base
Languages : en
Pages : 12
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Book Description
This paper presents a comparison of pavement layer moduli determined from backcalculation with those measured in the laboratory on asphalt concrete (AC) and granular base materials. Deflection data and pavement materials obtained from two conventional flexible pavement structures were used. Pavement surface deflections were measured with a Falling Weight Deflectometer and were used in backcalculation analysis to determine pavement layer moduli. AC cores and granular materials from the base layer were taken for testing in the laboratory to determine resilient modulus in accordance with established ASTM testing procedures. The comparison of backcalculated and laboratory measured moduli for two pavement structures showed that for the AC surface layer the backcalculated moduli were generally lower than the laboratory measured at the same temperature; the difference was in a range of 20 to 30 percent. The backcalculated moduli also seemed to be less susceptible to temperature variation. For the base aggregate materials, the backcalculated moduli exhibited tendency of stress dependency similar to those measured in the laboratory. In the range where actual pavement stresses generally fall, a favorable comparison was observed, indicating that the modulus-stress relationship determined from backcalculation could be used in the analysis of nonlinear property of granular base materials.
Author: Albert Jasper Bush
Publisher: ASTM International
ISBN: 0803112602
Category : Kaldırımlar-Deneme
Languages : en
Pages : 701
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Author: Soheil Nazarian
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 176
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Author: Gustav Theodor Rohde
Publisher:
ISBN:
Category : Deformations (Mechanics)
Languages : en
Pages : 456
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Author:
Publisher:
ISBN:
Category : Air travel
Languages : en
Pages : 784
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Author: George Michel Turkiyyah
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 50
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Author: National Research Council (U.S.). Transportation Research Board
Publisher: Transportation Research Board National Research
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 148
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Book Description
