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%2F68407700%3A21110%2F14%3A00224670" target="_blank" >RIV/68407700:21110/14:00224670 - 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
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 (fibre reinforced concrete). PET fibres, however, have poor wettability and adhesion to cementpaste, 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 ?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
Czech name
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Czech description
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Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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