1222
Proceedings of the 18
th
International Conference on Soil Mechanics and Geotechnical Engineering, Paris 2013
and number of passes of vehicular traffic loadingTest results were
analyzed to study the effects of confining pressure, deviatoric stresses,
and degree of saturation on the permanent deformation response of
pond ash
Effect of wetting- drying cycles on
CBR values of silty subgrade soil of
Karaj railway
Moayed
R.Z.,
Lahiji B. P. and
Daghigh Y.
Iran
Conducted series of CBR tests to investigate the effect of lime-
microsilica additive as a modern additive stabilizer on a silty soil
Lime and microsilica were mixed with the soil in different percentages
and specimens were prepared at optimum moisture content.
Model tests on settlement behaviour
of ballasts subjected to sand
intrusion
and
tie
tamping
application
Kumara J. and
Hayano K.
Japan
Model tests were conducted on 1/5th scale of the actual size of railway
track
The relationship between the number of loading cycles and settlement
was obtained and results were discussed with degree of ballast fouling
Table 4. Theoretical Advancements and Contributions to Design
Title of Paper
Authors
Country
Summary of Main Contribution
Evaluation of roadbed potential
damage
induced
by
swelling/shrinkage
of
the
subgrade
Simic D.
Spain
The average suction compression index of the plate load tests and the
routine soil parameters were adopted to carry out a comparison
between the methods of estimating swelling deformation.
The potential vertical rise method is very dependent on the active
moisture depth, which should be adopted based on the local experience.
Development of a non-linear
ballasted railway track model
Fernandes
V.A.,
D’Aguiar S. C.,
and
Lopez-
Caballero F.
France
A 2D finite element model with a modified width plane strain
condition is used where viscous boundaries are implemented using a
Kelvin-Voigt viscoelastic mechanical model to reduce wave reflexion
on boundaries.
The importance of initial state evolution of track materials on the
context of non-linear mechanical behavior is discussed to assure the
correct combination of laboratory tests based on current track
conditions, especially ballast.
Seismic Retrofit Technique for
Asphalt Concrete Pavements
Ohta H., Ishigaki
T. and Tatta N.
Japan
The structure of the seismic retrofit technique for asphalt concrete
pavements using Confined-Reinforced Earth (CRE), construction
method and the results of full scale in-situ tests were described where
crushed stones and new design procedures were introduced.
Full scale in-situ tests show the acceptable performance of CRE after
the forced settlement to simulate the severe earthquake-induced
damage.
Influence of Anti-freezing on the
Frost Penetration Depth for Paved
Road Design
Shin E.C., Cho
G.T. and Lee J.S.
Korea
The frost penetration depth of paved road was determined by the field
measurement. The subbase and base courses are influenced by the
temperature below 0o regardless of anti-frost layer.
The frost penetration depth estimated by the empirical equation
proposed by Korea Institute of Construction Technology shows a
similar trend in lower frost index.
The reasonable design concept is proposed for road design.
Special Aspects for Building a
Motorway on a 185 m Deep
Dump
Vogt N., Heyer D.,
Birle E., Vogt S.,
Dahmen
D.,
Karcher
C.,
Vinzelberg G. and
Eidam F.
Germany
The paper presents the project-specific conditions during the dumping
process and the properties of the dumped soils along the future A 44
routing.
A simple model for the description of the time-dependent deformation
of the dump and the effectiveness of soil compaction methods is
discussed and evaluated.
The simulation results and geodetic measurements have shown that by
allowing the resting period of at least 6 months between the end of the
dumping process and the start of the construction work, the settlements
of structures or pavements can be reduced significantly.
Equilibrium models for arching in
basal
reinforced
piled
embankments
Eekelen S.J.M. and
Bezuijen A.
Netherlands The paper compares three equilibrium models describing arching in
geosynthetic basal reinforced (GR) piled embankments, namely the
models of Hewlett and Randolph (1988), Zaeske (2001) and the
concentric arches model of Van Eekelen (2013b).
The load distributions predicted by Hewlett and Randolph (1988) and
Zaeske (2001) show a uniform load distribution on the GR between the
piles. The concentric arches model (Van Eekelen et al. 2013b) provides
