Publication Year: 2000
DOI: https://doi.org/10.3141/1716-04
Abstract: Repeated falling sites. showed close agreement for deflection, but not for moduli. Tests The were also run on cracked locations. Temperature did not affect tests the response of the cracked pavement as much as it were did the intact pavement. Due to the different temperature-dependent characteristics conducted of intact and Show more
Authors:
Publication Year: 2005
DOI: https://doi.org/10.1061/(asce)0899-1561(2005)17:5(560)
Abstract: The objective use moduli and with the DCP penetration rates. The results of of this study show that the geogauge and the LFWD can the be used to calculate the elastic modulus/stiffness characteristics of compacted geogauge layers. Whereas the geogauge and the LFWD determined the initial and modulus of the Show more
Authors:
Publication Year: 2002
DOI: https://doi.org/10.1061/(asce)0733-947x(2003)129:1(100)
Abstract: Subgrade soil essential the backcalculated moduli of the prepared subgrade are in good for agreement with the laboratory values. Due primarily to confinement and pavement overburden pressure, the backcalculated subgrade modulus, based on deflection measurements design/evaluation. on the finished pavement, increases approximately 40 and 100% for Due fine- and coarse-grain Show more
Authors:
Publication Year: 2002
DOI: https://doi.org/10.3141/1806-06
Abstract: New relationships of network techniques. Even though these relationships include the complicated dynamic flexible effect of FWD loading and nonlinear behavior of unbound materials, pavements the time to obtain results from these procedures is insignificant, and thus making the procedures suitable for field implementation. falling weight deflectometer (FWD) deflections. Synthetic Show more
Authors:
Publication Year: 2016
DOI: https://doi.org/10.1016/j.jtte.2016.09.010
Abstract: Falling weight structural capacity. Collected data includes, in addition to FWD measurements, core condition data and pavement distress surveys. Results showed that the dynamic of analysis of falling weight deflectometer test and prediction for the pavements strength of character of flexible pavement layer moduli have been to achieved, and algorithms Show more
Authors:
Publication Year: 2003
DOI: https://doi.org/10.3141/1860-10
Abstract: Nondestructive testing and the network level is presented. A network-level FWD and GPR rehabilitation testing program was implemented as a part of a study strategies to overcome those traditional obstacles. Periodic generation of necessary data in will be useful in determining how best to quantify structural recent capacity and estimate Show more
Authors:
Publication Year: 2008
DOI: https://doi.org/10.1139/l07-083
Abstract: Efforts have in further to develop ANN models that can predict a possible situ rigid layer at the bottom of the pavement and can elastic directly predict the remaining life of the pavement without backcalculating moduli the layer moduli. Finally, a reliability analysis is performed to of quantify the performance Show more
Authors:
Publication Year: 2006
DOI: https://doi.org/10.1061/(asce)1090-0241(2006)132:6(804)
Abstract: Lower cost precise of the PFWD loading plate. Our testing suggests that an quality appropriate plate size can be chosen from the measured modulus. assurance/control The effects of drop height on PFWD moduli were found programs to be small as the moduli remained about the same that regardless of the Show more
Authors:
Publication Year: 2011
DOI: https://doi.org/10.3141/2227-10
Abstract: The need accurately can be achieved. A methodology backcalculates the |E*| mastercurve of has the asphalt pavement layer by using the time history of increased FWD surface deflections. The method uses a layered viscoelastic forward with algorithm in an iterative backcalculation procedure for linear viscoelastic characteristics the of asphalt pavements. Show more
Authors:
Publication Year: 1985
DOI: https://doi.org/10.1061/(asce)0733-947x(1985)111:6(618)
Abstract: An elastodynamic blows density) appear to provide a useful vehicle for correlating pavement is response between different loading modes (impulse, vibratory, etc.). Since resonance presented. is a less important factor in the displacement response characteristics The of pavements subjected to transient loading, deflection data obtained from analysis transient loading devices Show more
Authors:
Publication Year: 1999
DOI: https://doi.org/10.3141/1655-19
Abstract: The Kansas falling between the DCP values and FWD-backcalculated subgrade moduli. Results of weight the linear regression analysis show that the best regression equation deflectometer is a power model with the coefficient of determination, R (FWD) 2 , ranging from 0.72 to 0.95 for individual pavement and sections. The global Show more
Authors:
Publication Year: 2001
DOI: https://doi.org/10.3141/1764-11
Abstract: Surface deflections significantly Temperature datum points ( n = 197) from three of affected the test sites were used to develop the temperature prediction by model, and data from the remaining sites were used for the validation. The temperature prediction model developed has an R 2 temperature value greater than Show more
Authors:
Publication Year: 2007
DOI: https://doi.org/10.3141/2016-02
Abstract: Field and potential Linear regression analyses were carried out on the collected test use data to develop models that could directly relate the LFWD of stiffness modulus with moduli obtained from FWD and PLT and the the DCP penetration rate. In addition, multiple nonlinear regression analyses light were conducted to Show more
Authors:
Publication Year: 2013
DOI: https://doi.org/10.1080/14680629.2012.754600
Abstract: AbstractThe response Sweden, penetrated the subgrade and pavement exhibited its weakest structural condition. subjected The analyses of the deflection basin indices and back-calculated unbound to layer stiffness from the FWD measurements exhibited a clear correlation seasonal with the measured subsurface moisture content. Furthermore, the dissipated energy freeze–thaw measured from the Show more
Authors:
Publication Year: 2001
DOI: https://doi.org/10.3141/1755-08
Abstract: Mechanistic empirical-based materials, at the 95 percent reliability level and a coefficient of facilitate variability of measured deflections may serve as potential quality-control indicators. quantitative The possible use of the German light dropweight (LDW) device evaluations for measuring the mechanical properties of the formation of flexible of pavements was also Show more
Authors:
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