The experimental estimation of the elastic modulus of a fly ash based trackbed layer under cyclic loading

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00332937" target="_blank" >RIV/68407700:21110/19:00332937 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.29227/IM-2019-01-22" target="_blank" >https://doi.org/10.29227/IM-2019-01-22</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.29227/IM-2019-01-22" target="_blank" >10.29227/IM-2019-01-22</a>

Result language

angličtina

Original language name

The experimental estimation of the elastic modulus of a fly ash based trackbed layer under cyclic loading

Original language description

In a railway track structure system, trackbed layers are designed to compensate for insufficient bearing capacity and/or water or frost resistance of natural soil. These, so called, `capping layers’ can be constructed from raw materials like sand or gravel or from industrial materials like asphalt or concrete. However, more environmentally and cost friendly alternatives have been studied in recent years. Fly-ash represents one such promising material and a trial section of a main line track with the capping layer made from a fly-ash-based mixture was constructed in Czech Republic in 2005. The performance of the capping layer in the section has been measured since. In this paper, results of the laboratory estimation of the elastic modulus under cyclic traffic-like induced loading are presented for the most recent group of samples. The results show that the elastic limit of the fly-ash-based material lies well above the stresses induced by railway traffic and that its behaviour is stable under the cyclic loading. This suggests that the mechanical properties of the material may not be determinative for the design of the layer and that the feasibility factors may take precedent. This in turn suggests that either the design strength of the material or the designed thickness of the layer may be possibly reduced.

Czech name

—

Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

—

OECD FORD branch

20102 - Construction engineering, Municipal and structural engineering

Project

<a href="/en/project/TE01020168" target="_blank" >TE01020168: Centre for Effective and Sustainable Transport Infrastructure (CESTI)</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Inżynieria Mineralna

ISSN

1640-4920

e-ISSN

—

Volume of the periodical

43

Issue of the periodical within the volume

1

Country of publishing house

PL - POLAND

Number of pages

5

Pages from-to

119-123

UT code for WoS article

000480430100022

EID of the result in the Scopus database

2-s2.0-85074192264