Comparison of Micromechanical Properties of Interfacial Transition Zone in Fiber-Reinforced Cement Paste Samples of Different Age

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F18%3A00322723" target="_blank" >RIV/68407700:21110/18:00322723 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Comparison of Micromechanical Properties of Interfacial Transition Zone in Fiber-Reinforced Cement Paste Samples of Different Age

Original language description

The presented paper is focused on a micromechanical study of ITZ between a steel fiber and the cement matrix on two samples of a different age. The microstructure of ITZ around the fibers is characterized by a smaller portion of clinkers and a higher porosity than in the bulk matrix. Nanoindentation was used to obtain microscale elastic properties such as the modulus of elasticity, hardness, etc. An average modulus of elasticity of ITZ of both samples, calculated from the merged nanoindentation results, showed a general increasing trend of the modulus of elas-ticity as the position of an indent was further from the steel fiber. The same trend was observed in the case of hardness. The average value of the modulus of elasticity was 31 GPa in the ITZ. For hardness the value was deter-mined at about 1.1 GPa. The average value of CIT and creep compliance in the ITZ was found to be mostly same in the studied region. For this area, the average value of CIT was 11.60%. Most of the curves have a similar trend and a similar initial value of about 0.06-0.07 GPa-1 in ITZ for the 1-year-old sample and the 1-month-old sample.

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/GA17-05360S" target="_blank" >GA17-05360S: Small-scale fracturing of amorphous and crystalline materials assessed with nanoindentation and focused ion beam</a><br>

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2018

Confidentiality

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

Article name in the collection

Mechanika 2018 Proceedings of the 23rd International Scientific Conference

ISBN

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ISSN

1822-2951

e-ISSN

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Number of pages

5

Pages from-to

183-187

Publisher name

Kaunas University of Technology

Place of publication

Kaunas

Event location

Druskininkai

Event date

May 18, 2018

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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