Backcalculation of pavements incorporating Grouted Macadam technology
Applying cement grout with a high compressive strength to a porous layer made of asphalt concrete results in a pavement with the properties of an intermediate type that combines the characteristics of both flexible and rigid pavements. This solution is known as Grouted Macadam (GM). Despite a wide range of test results on the GM pavements presented in the literature, there are very few advanced modelling solutions formulated in the scope of bearing capacity measured in situ be means of a Falling Weight Deflectometer. This paper turns out that the seemingly small frequency of loading (≈20 Hz) generated during pavement deflection measurements using a Falling Weight Deflectometer-like device, has a significant impact on the backcalculation results of GM pavements. The study shows that, introducing frequency normalisation of both the pavement loading and vertical displacements to the backcalculation, can limit the statistical scatter of backcalculation results by close to a half in comparison with the classical backcalculation procedure.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/14680629
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Supplemental Notes:
- © 2017 Informa UK Limited, trading as Taylor & Francis Group. Abstract reprinted with permission of Taylor & Francis.
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Authors:
- Pożarycki, Andrzej
- Fengier, Jakub
- Górnaś, Przemysław
- Wanatowski, Dariusz
- Publication Date: 2018-8
Language
- English
Media Info
- Media Type: Web
- Features: References;
- Pagination: pp 1372-1388
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Serial:
- Road Materials and Pavement Design
- Volume: 19
- Issue Number: 6
- Publisher: Taylor & Francis
- ISSN: 1468-0629
- EISSN: 2164-7402
- Serial URL: http://www.tandfonline.com/loi/trmp20
Subject/Index Terms
- TRT Terms: Backcalculation; Deflection; Falling weight deflectometers; Flexible pavements; Macadam
- Uncontrolled Terms: Grouted macadams
- Subject Areas: Highways; Materials; Pavements;
Filing Info
- Accession Number: 01675366
- Record Type: Publication
- Files: TRIS
- Created Date: Jul 19 2018 2:45PM