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A Model for Predict...
A Model for Predicting Permanent Deformation of Unbound Granular Materials
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- Rahman, Mohammad Shafiqur, 1978- (author)
- Statens väg- och transportforskningsinstitut,KTH,Väg- och banteknik,Swedish National Road and Transport Research Institute (VTI),Väg- och banteknik, VBA,Kungliga Tekniska Högskolan
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- Erlingsson, Sigurdur, 1960- (author)
- Statens väg- och transportforskningsinstitut,KTH,Väg- och banteknik,Swedish National Road and Transport Research Institute (VTI),Väg- och banteknik, VBA,University of Iceland
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(creator_code:org_t)
- 2015-03-27
- 2015
- English.
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In: International Journal on Road Materials and Pavement Design. - UK : Taylor & Francis Group. - 1468-0629 .- 2164-7402. ; 16:3, s. 653-673
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Abstract
Subject headings
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- A simple model has been proposed to characterize the accumulation of permanent deformation (PD) in Unbound Granular Materials (UGMs) under cyclic loading of variable magnitudes. The model was developed based on Multi-Stage (MS) Repeated-Load Triaxial (RLT) tests. The material parameters of this model can be evaluated using an MS RLT test. The model was validated by calibrating it for a few UGMs with a range of grain size distributions, moisture contents and degrees of compaction. The calibrated model was further validated by predicting the PD behaviour of some of these UGMs for different stress conditions. Generally, quite satisfactory predictions were obtained with this model with the advantage of reduced effort required for its calibration compared to some existing models. Additionally, the sensitivity of the parameters of this model to moisture, degree of compaction and grain size distribution was investigated with the aim of incorporating them into the model in future.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik -- Infrastrukturteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering -- Infrastructure Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)
Keyword
- unbound granular materials
- permanent deformation
- multi-stage repeated-load triaxial test
- model
- moisture
- grain size distribution
- Civil and Architectural Engineering
- Byggvetenskap
- Transportvetenskap
- Transport Science
- 32 Road: Pavement design
Publication and Content Type
- ref (subject category)
- art (subject category)
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