Moisture Diffusivity of HPFRC Exposed to High Temperatures

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F17%3A00313530" target="_blank" >RIV/68407700:21110/17:00313530 - isvavai.cz</a>

Result on the web

<a href="http://aip.scitation.org/doi/abs/10.1063/1.4992328" target="_blank" >http://aip.scitation.org/doi/abs/10.1063/1.4992328</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.4992328" target="_blank" >10.1063/1.4992328</a>

Result language

angličtina

Original language name

Moisture Diffusivity of HPFRC Exposed to High Temperatures

Original language description

Concrete structures suffer from a high-temperature exposure, among others from the damage induced by spalling. The cracks propagation is connected with the degree of material water saturation and rate of damage during the release of free and bound water from cement hydrates as a result of material high-temperature heating. In case of High Performance Concrete (HPC), its dense structure increases concrete damage due to the formation of higher water vapor pressures compared to normal strength concrete. On this account, detail information on the influence of a high-temperature load on the permeability of a High Performance Fiber Reinforced Concrete (HPFRC) represents worth information for proper building and structural design. In this study, 1-D liquid water transport in HPFRC samples exposed to the laboratory temperature and temperatures of 800 °C and 1 000 °C is studied. Experimentally measured moisture profiles are used for the calculation of moisture dependent moisture diffusivity using inverse analysis method based on Boltzmann-Matano treatment. The K-spline software tool, developed at the Department of Materials Engineering and Chemistry, FCE, CTU in Prague is used to get high accuracy of the computational inverse procedure.

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Project

<a href="/en/project/GA15-05791S" target="_blank" >GA15-05791S: Analysis of physical and chemical processes in hybrid-fiber reinforced high performance cement-based composites induced by high-temperature loading</a><br>

Continuities

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

Publication year

2017

Confidentiality

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

Article name in the collection

Proceedings of International Conference on Numerical Analysis and Applied Mathematics 2016 (ICNAAM-2016)

ISBN

978-0-7354-1538-6

ISSN

—

e-ISSN

0094-243X

Number of pages

4

Pages from-to

—

Publisher name

AIP Conference Proceedings

Place of publication

New York

Event location

Rhodes

Event date

Sep 19, 2016

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000410159800172