A Brief History of Full-Scale Accelerated Pavement Testing Facilities to 1962

Metcalf, J B

doi:10.1007/978-3-319-42797-3_1

Cited by 8 publications

(7 citation statements)

References 2 publications

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“…Traditionally in-situ pavement response and performance can be evaluated and studied by means of Accelerated Pavement Testing (APT), which has been defined by Metcalf, as “the controlled application of a prototype wheel loading (…) to determine pavement response and performance under a controlled, accelerated accumulation of damage in a compressed time period” [ 9 ].…”

Section: Methodsmentioning

confidence: 99%

Preliminary In-Situ Evaluation of an Innovative, Semi-Flexible Pavement Wearing Course Mixture Using Fast Falling Weight Deflectometer

et al. 2018

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In the last forty, years semi-flexible pavements have been successfully employed, especially in those areas subjected to heavy and slow-moving loads. They usually comprise a wearing course of Grouted Macadam, a composite pavement material that provides significant advantages in comparison to both concrete and asphalt pavements. On the other hand, the laying process of this material is a two-stage operation, and the realization complexity leads to long realization times and high initial costs. Therefore, the use of semi-flexible pavements has been limited to some fields of application and areas. Recently, an innovative material has been developed to be used as an alternative to Grouted Macadam for semi-flexible pavement wearing course realization. This material should provide similar or even superior characteristics compared to traditional Grouted Macadam. This will reduce semi-flexible pavement construction time and avoid the need for dividing the laying process. This paper presents an experimental program involving the use of FastFWD, as an APT device, to evaluate in-situ properties and performance of this material. The achieved results regarding the validation of this new material by means of FastFWD appear promising both in terms of the material’s properties and resistance to dynamic load repetitions.

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Section: Methodsmentioning

confidence: 99%

Preliminary In-Situ Evaluation of an Innovative, Semi-Flexible Pavement Wearing Course Mixture Using Fast Falling Weight Deflectometer

et al. 2018

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“…W c is current wavelength, unit nm. C 0 is a constant term, indicating the initial state, unit o C/nm (Metcalf, 2016). C 1 is linear coefficient, representing the transmission characteristics, unit o C/nm (Metcalf, 2016).…”

Section: Loading Schemementioning

confidence: 99%

“…The mechanical response of various pavements under the practical traffic load is obtained and analyzed. In the late 1950s, experimental roads of American Association of State Highway (AASHTO) were paved, which still had an influence on the development of pavement technology worldwide (Metcalf, 2016;Milad et al, 2022). The MnROAD project in Minnesota, United States, provided a foundational platform for analyzing and comparing the service performance of various pavement structures (Burnham et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Characteristics and analysis of static strain response on typical asphalt pavement using fiber Bragg grating sensing technology

Liu,

Chen,

Cao

et al. 2024

Front. Built Environ.

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To study the real internal strain response of asphalt pavement and provide crucial data for optimizing pavement design. By burying the fiber grating sensors on site, the strain tests of four asphalt pavement structures under different working conditions were carried out, and the results showed that the static strain time curve is viscoelastic and conforms well to the Bugers model, and the fitting coefficient of determination is 0.98. The strain response of the asphalt surface courses of the four pavement structures under static load shows a double hump variation with the transverse position, with peaks occurring directly beneath the wheel load center. The transverse strain fluctuated between tension and compression, mirroring changes in the lateral position. While longitudinal strains, always tensile, were symmetrically aligned with the centerline of the longitudinal sensors, this pattern differed notably from that of the transverse sensors. In the base layers, the strain profile typically presented a single peak, located at the wheel gap, underscoring a critical area of stress concentration. Numerically, the peak strain of asphalt surface course is larger than that of base course. The most unfavorable loading position of the base course occurs at the wheel gap of the lower base course. The most adverse loading position of the surface course appears at the wheel load at the bottom of the upper or middle course. The research results can provide data support for improving the design method of asphalt pavement.

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“…Metcalf (1996) states that accelerated testing in full-scale consists in the application of controlled wheel loading at the highway weight limit or higher to a pavement structure in order to determine the response in terms of displacements, stresses and strains, and to obtain the performance of this structure under a controlled, accelerated, accumulation of damage in a shorter amount of time.…”

Section: Accelerated Testing For Fatigue Cracking Predictionmentioning

confidence: 99%

“…According to Metcalf (1996), there are basically three types of real-scale traffic simulators: (i) test roads, which provide good evidence of the pavement performance but poor environmental control; (ii) circular tracks, which have the advantages of operating at high speed and are capable of testing several pavement sections at the same time, but they can offer some difficult during the construction of the circular pavement with the conventional equipment and techniques; (iii) linear tracks, which normally use a two-way loading that can affect pavement performance. Several countries have performed different trials throughout the past decades: Australia, Canada, China, France, Germany, Italy, Japan, South Africa, Switzerland, the USA, among others.…”

Section: Accelerated Testing For Fatigue Cracking Predictionmentioning

confidence: 99%

Laboratory and field study of fatigue cracking prediction in asphalt pavements.

Bessa¹

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A Brief History of Full-Scale Accelerated Pavement Testing Facilities to 1962

Cited by 8 publications

References 2 publications

Preliminary In-Situ Evaluation of an Innovative, Semi-Flexible Pavement Wearing Course Mixture Using Fast Falling Weight Deflectometer

Preliminary In-Situ Evaluation of an Innovative, Semi-Flexible Pavement Wearing Course Mixture Using Fast Falling Weight Deflectometer

Characteristics and analysis of static strain response on typical asphalt pavement using fiber Bragg grating sensing technology

Laboratory and field study of fatigue cracking prediction in asphalt pavements.

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