Microstructure of interfacial transition zone between PET fibres and cement paste

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F13%3A00485589" target="_blank" >RIV/67985891:_____/13:00485589 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.13168/AGG.2013.0012" target="_blank" >http://dx.doi.org/10.13168/AGG.2013.0012</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.13168/AGG.2013.0012" target="_blank" >10.13168/AGG.2013.0012</a>

Result language

angličtina

Original language name

Microstructure of interfacial transition zone between PET fibres and cement paste

Original language description

Considerable amount of waste in the form of polyethylene terephthalate (PET) bottles could be utilized in the form of dispersed microreinforcement in concrete. PET fibres, however, have poor wettability and adhesion to cement paste, which can be modified by alkaline hydrolysis with sodium hydroxide at elevated temperature. The alkaline treatment was used to increase fibre surface, which was followed by changes in the structure of the interfacial transition zone (ITZ) and interfacial bond between fibre and cementitious matrix. Raman microspectroscopy mapping was employed to study microstructural changes of ITZ within the distance 0 - 250 mu m from a PET fibre. The band at 357 cm(-1) corresponding to the Ca-O bond vibration in portlandite was used to determine its distribution. For determination of the relative abundance of ettringite, the SO42- stretching vibration at 987 cm(-1) was used. The most intensive bands of portlandite and ettringite were found within the distance 0 - 50 mu m from an unmodified PET fibre. Besides the elevated concentration of these minerals, abundant pores occur in this region. In the case of alkaline modified PET fibres the ITZ zone was not found.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10511 - Environmental sciences (social aspects to be 5.7)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2013

Confidentiality

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

Name of the periodical

Acta geodynamica et geomaterialia

ISSN

1214-9705

e-ISSN

—

Volume of the periodical

10

Issue of the periodical within the volume

1

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

7

Pages from-to

121-127

UT code for WoS article

000320087700012

EID of the result in the Scopus database

2-s2.0-84874820349