Steel and PVA Fibres Reinforced UHPC Exposed to High Temperatures - Analysis of Residual Properties

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F17%3A00312792" target="_blank" >RIV/68407700:21110/17:00312792 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21610/17:00312792

Výsledek na webu

<a href="https://www.scientific.net/MSF.902.26" target="_blank" >https://www.scientific.net/MSF.902.26</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/MSF.902.26" target="_blank" >10.4028/www.scientific.net/MSF.902.26</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Steel and PVA Fibres Reinforced UHPC Exposed to High Temperatures - Analysis of Residual Properties

Popis výsledku v původním jazyce

Residual parameters of Ultra High Performance Concrete (UHPC) exposed to high temperatures were experimentally accessed. The UHPC was provided by hybrid fibre reinforcement based on polyvinyl alcohol (PVA) and steel fibres. Among the studied material properties, bulk density, matrix density, total open porosity, pore size distribution, water vapour transmission and liquid water transport properties were examined. The UHPC samples were exposed to the temperatures 400 °C, 600 °C, 800 °C, and 1000 °C respectively. For comparative purposes, the reference UHPC samples cured at laboratory temperature were tested as well. Based on the obtained results, correlation between concrete structural changes and tested parameters was found out. The applied temperature load highly affected the concrete porosity, pore size, and thus both liquid and gaseous moisture transport parameters. Disintegration of concrete structure, colour change, cracking, damage of steel fibres (melting), and failure of their cohesion was apparent from optical microscopy analysis.

Název v anglickém jazyce

Steel and PVA Fibres Reinforced UHPC Exposed to High Temperatures - Analysis of Residual Properties

Popis výsledku anglicky

Residual parameters of Ultra High Performance Concrete (UHPC) exposed to high temperatures were experimentally accessed. The UHPC was provided by hybrid fibre reinforcement based on polyvinyl alcohol (PVA) and steel fibres. Among the studied material properties, bulk density, matrix density, total open porosity, pore size distribution, water vapour transmission and liquid water transport properties were examined. The UHPC samples were exposed to the temperatures 400 °C, 600 °C, 800 °C, and 1000 °C respectively. For comparative purposes, the reference UHPC samples cured at laboratory temperature were tested as well. Based on the obtained results, correlation between concrete structural changes and tested parameters was found out. The applied temperature load highly affected the concrete porosity, pore size, and thus both liquid and gaseous moisture transport parameters. Disintegration of concrete structure, colour change, cracking, damage of steel fibres (melting), and failure of their cohesion was apparent from optical microscopy analysis.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA15-05791S" target="_blank" >GA15-05791S: Analýza fyzikálních a chemických procesů při vysokoteplotním zatížení vysokohodnotných cementových kompozitů s hybridní vláknovou výztuží</a><br>

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název statě ve sborníku

Materials Science Forum

ISBN

978-3-0357-1112-7

ISSN

—

e-ISSN

—

Počet stran výsledku

7

Strana od-do

26-32

Název nakladatele

TRANS TECH PUBLICATIONS LTD

Místo vydání

Zurich

Místo konání akce

Hong Kong

Datum konání akce

15. 10. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—