Determination of the Elastic Modulus of Fly Ash-based Stabilizer Applied in the Trackbed

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F17%3A00308706" target="_blank" >RIV/68407700:21110/17:00308706 - isvavai.cz</a>

Result on the web

<a href="http://iopscience.iop.org/article/10.1088/1757-899X/236/1/012040/pdf" target="_blank" >http://iopscience.iop.org/article/10.1088/1757-899X/236/1/012040/pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1757-899X/236/1/012040" target="_blank" >10.1088/1757-899X/236/1/012040</a>

Result language

angličtina

Original language name

Determination of the Elastic Modulus of Fly Ash-based Stabilizer Applied in the Trackbed

Original language description

This paper describes a unique application of a fly ash-based stabilizer in the trackbed of a railway main line. The key goals of the stabilizer application are to protect the subgrade against the ingress of rain water, to increase the frost resistance and to remediate the natural ground constituted of weathered rock. The stabilizer was designed as a mixture of fly ash, generated as a waste material from coal plants, gypsum, calcium oxide and water. The mixture recipe was developed in a laboratory over several years. In 2005, a trial section of a railway line with subgrade consisting of clay limestone (weathered marlite) was built in the municipality of Smiřice. Since then, periodical measurements including collection of samples for laboratory evaluation of the fly ash-based stabilizer have taken place. Over the time span of the measurements, changes in mineral composition and development of fly ash transforming structures leading to the formation of C-A-S-H gel were detected. This paper describes the experimental laboratory investigation of the influence of dynamic loading on the elastic modulus of fly ash stabilizer samples and the development of permanent deformation of the samples with increasing number of loading cycles.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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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

2017

Confidentiality

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

Article name in the collection

Building up Efficient and Sustainable Transport Infrastructure 2017 (BESTInfra2017)

ISBN

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ISSN

1757-8981

e-ISSN

1757-899X

Number of pages

8

Pages from-to

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Publisher name

IOP Publishing Ltd

Place of publication

Bristol

Event location

Praha

Event date

Sep 20, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000417428700040