Author: JM. Ovik
Publisher:
ISBN:
Category : Environmental engineering
Languages : en
Pages : 15
Book Description
Recent advances in flexible pavement design have prompted agencies to move toward the development and use of mechanistic-empirical (M-E) design procedures. The purpose of this paper is to analyze seasonal trends in flexible pavement layer moduli in order to calibrate a mechanistic-empirical design procedure specific to Minnesota. The relationships investigated were between climate factors, surface and subsurface conditions, and pavement material properties. The results presented focus on the base and subgrade layers and show that the layer moduli vary with the state of moisture in the pavement. The data used to develop this approach were collected from four flexible pavement Long Term Pavement Performance Seasonal Monitoring Program sites (LTPP SMP) and the Minnesota Road Research Project (Mn/ROAD). Temperature data are used in this study to characterize the severity of a winter and to approximate the onset of freezing and thawing cycles. Finally, seasonal trends in pavement layer moduli were quantified for use in an M-E design of flexible pavements.
Seasonal Variations in Backcalculated Pavement Layer Moduli in Minnesota
Characterizing Seasonal Variations in Pavement Material Properties for Use in a Mechanistic-empirical Design Procedure
Author: Jill M. Ovik
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 238
Book Description
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 238
Book Description
Nondestructive Testing of Pavements and Backcalculation of Moduli
Author: Shiraz D. Tayabji
Publisher: ASTM International
ISBN: 0803128584
Category : Materials
Languages : en
Pages : 534
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
Publisher: ASTM International
ISBN: 0803128584
Category : Materials
Languages : en
Pages : 534
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
Material Characterization and Seasonal Variation in Material Properties
Author:
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 288
Book Description
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 288
Book Description
Seasonal Variations of in Situ Materials Properties in New York State
Author: David Paul Orr
Publisher:
ISBN:
Category :
Languages : en
Pages : 946
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 946
Book Description
Variations in Backcalculated Pavement Layer Moduli in LTPP Seasonal Monitoring Sites
Author: EO. Lukanen
Publisher:
ISBN:
Category : Backcalculation
Languages : en
Pages : 16
Book Description
Seasonal variations in structural parameters were calculated from Falling Weight Deflectometer data on 25 LTPP flexible seasonal monitoring sections. In all, 23,976 deflection basins were analyzed. The deflection basins were collected monthly between the fall of 1993 and the spring of 1995. The test locations were distributed around North America from Saskatchewan to South Texas and from Idaho to Maine. The sections all consisted of asphalt surfacing and granular bases (and some granular subbases) over subgrades. Asphalt thicknesses ranged from 46 to 277\mm. Seasonal variations observed on selected sections in this database and documented in this paper include variations in asphaltic materials with temperature, variations in moduli of the unbound materials with precipitation, and variations in moduli of unbound materials due to freeze/thaw. For moderately thick to thick asphalt sections (>125 mm) the temperature dependency can clearly be seen in the deflection basins. As expected, this variation in deflections, and AC modulus is sinusoidal over the year. The amplitude of the sinusoidal variations were found to be heavily influenced by the thickness of the AC layer. Thicker AC sections exhibited higher sinusoidal variations. Base and subgrade values tended to be influenced by temperature but remained more consistent throughout the year except in cases where freezethaw effects were seen. During freeze conditions, the moduli of the unbound (base and subgrade) layers drastically increased.
Publisher:
ISBN:
Category : Backcalculation
Languages : en
Pages : 16
Book Description
Seasonal variations in structural parameters were calculated from Falling Weight Deflectometer data on 25 LTPP flexible seasonal monitoring sections. In all, 23,976 deflection basins were analyzed. The deflection basins were collected monthly between the fall of 1993 and the spring of 1995. The test locations were distributed around North America from Saskatchewan to South Texas and from Idaho to Maine. The sections all consisted of asphalt surfacing and granular bases (and some granular subbases) over subgrades. Asphalt thicknesses ranged from 46 to 277\mm. Seasonal variations observed on selected sections in this database and documented in this paper include variations in asphaltic materials with temperature, variations in moduli of the unbound materials with precipitation, and variations in moduli of unbound materials due to freeze/thaw. For moderately thick to thick asphalt sections (>125 mm) the temperature dependency can clearly be seen in the deflection basins. As expected, this variation in deflections, and AC modulus is sinusoidal over the year. The amplitude of the sinusoidal variations were found to be heavily influenced by the thickness of the AC layer. Thicker AC sections exhibited higher sinusoidal variations. Base and subgrade values tended to be influenced by temperature but remained more consistent throughout the year except in cases where freezethaw effects were seen. During freeze conditions, the moduli of the unbound (base and subgrade) layers drastically increased.
Seasonal Variations in the Moduli of Unbound Pavement Layers
Author: Cheryl Allen Richter
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages :
Book Description
Nondestructive Testing of Pavements and Backcalculation of Moduli
Author: Albert Jasper Bush
Publisher: ASTM International
ISBN: 0803112602
Category : Kaldırımlar-Deneme
Languages : en
Pages : 701
Book Description
Publisher: ASTM International
ISBN: 0803112602
Category : Kaldırımlar-Deneme
Languages : en
Pages : 701
Book Description
Bearing Capacity of Roads, Railways and Airfields, Two Volume Set
Author: Erol Tutumluer
Publisher: CRC Press
ISBN: 0203865286
Category : Technology & Engineering
Languages : en
Pages : 1560
Book Description
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
Publisher: CRC Press
ISBN: 0203865286
Category : Technology & Engineering
Languages : en
Pages : 1560
Book Description
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
Backcalculation of layer parameters for LTPP test sections
Author:
Publisher: DIANE Publishing
ISBN: 1428995684
Category :
Languages : en
Pages : 274
Book Description
Publisher: DIANE Publishing
ISBN: 1428995684
Category :
Languages : en
Pages : 274
Book Description