Response of Refractory Cement Based Composite to Gradual Temperature Loading

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F18%3A00322810" target="_blank" >RIV/68407700:21110/18:00322810 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.3311/PPci.11080" target="_blank" >http://dx.doi.org/10.3311/PPci.11080</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3311/PPci.11080" target="_blank" >10.3311/PPci.11080</a>

Result language

angličtina

Original language name

Response of Refractory Cement Based Composite to Gradual Temperature Loading

Original language description

This paper deals with the experimental study of the response of refractory concrete mixture to gradual thermal loading, up to 1000 degrees C. A binding system based on calcium aluminate cement (CAC) modified by the partial replacement of metakaolin was used. Short ceramic fibers were applied in a dose of 4% by volume in the studied mixture. Material transformations due to thermal loading were monitored in terms of residual mechanical, fracture and basic physical properties-compressive strength, flexural strength, fracture energy, dynamic modulus of elasticity, and bulk density in the study. The results obtained corresponded well with the mineral transformations monitored using the thermogravimetric analysis performed on the binder paste. Residual values of compressive and flexural strength were approximately 40% of the initial values after exposure to a temperature of 1000 degrees C; however, the dominant part of the total loss was monitored up to 400 degrees C, due to decomposition of the hydrates. Fiber employment contributed considerably to the resistance against thermal loading up to 400 degrees C, which was demonstrated by the fracture energy results (a loss of 25% was monitored). An additional increase of the temperature load led to micro crack propagation, which was obvious in the results of dynamic modulus of elasticity determination, in which the short fiber incorporation was noticeably limited.

Czech name

—

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

—

OECD FORD branch

20101 - Civil engineering

Project

<a href="/en/project/GBP105%2F12%2FG059" target="_blank" >GBP105/12/G059: Cumulative time dependent processes in building materials and structures</a><br>

Continuities

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

Publication year

2018

Confidentiality

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

Name of the periodical

Periodica Polytechnica-Civil Engineering

ISSN

0553-6626

e-ISSN

—

Volume of the periodical

62

Issue of the periodical within the volume

3

Country of publishing house

HU - HUNGARY

Number of pages

6

Pages from-to

670-675

UT code for WoS article

000432604200014

EID of the result in the Scopus database

2-s2.0-85048214508