Mechanical Properties Improvement of Fiber Reinforced Concrete

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00332672" target="_blank" >RIV/68407700:21110/19:00332672 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21720/19:00332672

Výsledek na webu

<a href="https://ojs.cvut.cz/ojs/index.php/APP/article/view/5670/5081" target="_blank" >https://ojs.cvut.cz/ojs/index.php/APP/article/view/5670/5081</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.14311/APP.2019.22.0123" target="_blank" >10.14311/APP.2019.22.0123</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Mechanical Properties Improvement of Fiber Reinforced Concrete

Popis výsledku v původním jazyce

Fiber reinforced concrete mechanical properties are limited due to low adhesion between polymer fibers and cement matrix. To ensure a strong interaction between the two materials, polypropylene fibers (d = 0.305mm) were modified by an oxygen plasma treatment. The interface interaction was moreover activated using finely ground concrete recyclate, whose individual grains (1–64 μm) ensure an adhesion improvement in interfacial zones. The adhesion enhancement was verified by pull-out tests, when reference and modified fibers were pulled-out from cement matrix specimens. Such obtained results were used as a crucial parameter to numerical simulations of bending tests of specimens (550 x 150 x 150mm) with properties following fiber reinforced concrete. It was shown that samples reinforced with modified fibers and contained activating recyclate reached on higher residual bending strength then those with reference fibers.

Název v anglickém jazyce

Mechanical Properties Improvement of Fiber Reinforced Concrete

Popis výsledku anglicky

Fiber reinforced concrete mechanical properties are limited due to low adhesion between polymer fibers and cement matrix. To ensure a strong interaction between the two materials, polypropylene fibers (d = 0.305mm) were modified by an oxygen plasma treatment. The interface interaction was moreover activated using finely ground concrete recyclate, whose individual grains (1–64 μm) ensure an adhesion improvement in interfacial zones. The adhesion enhancement was verified by pull-out tests, when reference and modified fibers were pulled-out from cement matrix specimens. Such obtained results were used as a crucial parameter to numerical simulations of bending tests of specimens (550 x 150 x 150mm) with properties following fiber reinforced concrete. It was shown that samples reinforced with modified fibers and contained activating recyclate reached on higher residual bending strength then those with reference fibers.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA17-06771S" target="_blank" >GA17-06771S: Možnosti využití mikromletého recyklovaného betonu jako mikroplniva s pojivovými vlastnostmi</a><br>

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

SPECIAL CONCRETE AND COMPOSITES 2018

ISBN

978-80-01-06594-5

ISSN

—

e-ISSN

2336-5382

Počet stran výsledku

5

Strana od-do

123-127

Název nakladatele

České vysoké učení technické v Praze

Místo vydání

Praha

Místo konání akce

Hotel Skalsky Dvur, Lisek

Datum konání akce

11. 10. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—