The effect of hydrothermal curing on residual mechanical properties of refractory concrete

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F18%3A00322812" target="_blank" >RIV/68407700:21110/18:00322812 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1063/1.5043882" target="_blank" >http://dx.doi.org/10.1063/1.5043882</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.5043882" target="_blank" >10.1063/1.5043882</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The effect of hydrothermal curing on residual mechanical properties of refractory concrete

Popis výsledku v původním jazyce

This paper describes the influence of hydrothermal curing conditions on final mechanical properties of refractory fibre-reinforced cement composite. The effect of age of specimens, when the hydrothermal curing process started, was investigated in the point of view of best achieved mechanical properties. The age of 24, 30, 36, 42 and 48 hours after fist contact water with cement was tested. The curing conditions in autoclave device were set on 150 °C and 0.45 MPa in 100% humidity environment. Hydrothermally cured specimens together with reference specimens cured in laboratory conditions were exposed to the action of elevated temperature on level 600°C and 1000°C for three hours. The dynamic modulus of elasticity, flexural strength, compressive strength and bulk density were measured to quantify the benefit of hydrothermal curing. Used refractory composite consisted of natural basalt aggregate, aluminous cement, fine ground ceramic powder, water with plasticizer and basalt fibres. All parameters were investigated on specimens with dimension 40 x 40 x 160 mm. The specimens activated in autoclave achieved higher residual properties compared with reference specimens cured in laboratory conditions. The cohesion between hydration products and fibreś surface increases due to the influence of hydrothermal conditions.

Název v anglickém jazyce

The effect of hydrothermal curing on residual mechanical properties of refractory concrete

Popis výsledku anglicky

This paper describes the influence of hydrothermal curing conditions on final mechanical properties of refractory fibre-reinforced cement composite. The effect of age of specimens, when the hydrothermal curing process started, was investigated in the point of view of best achieved mechanical properties. The age of 24, 30, 36, 42 and 48 hours after fist contact water with cement was tested. The curing conditions in autoclave device were set on 150 °C and 0.45 MPa in 100% humidity environment. Hydrothermally cured specimens together with reference specimens cured in laboratory conditions were exposed to the action of elevated temperature on level 600°C and 1000°C for three hours. The dynamic modulus of elasticity, flexural strength, compressive strength and bulk density were measured to quantify the benefit of hydrothermal curing. Used refractory composite consisted of natural basalt aggregate, aluminous cement, fine ground ceramic powder, water with plasticizer and basalt fibres. All parameters were investigated on specimens with dimension 40 x 40 x 160 mm. The specimens activated in autoclave achieved higher residual properties compared with reference specimens cured in laboratory conditions. The cohesion between hydration products and fibreś surface increases due to the influence of hydrothermal conditions.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GBP105%2F12%2FG059" target="_blank" >GBP105/12/G059: Kumulativní časově závislé procesy ve stavebních materiálech a konstrukcích</a><br>

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of International Conference on Numerical Analysis and Applied Mathematics 2017 (ICNAAM-2017)

ISBN

978-0-7354-1690-1

ISSN

—

e-ISSN

0094-243X

Počet stran výsledku

4

Strana od-do

—

Název nakladatele

AIP Conference Proceedings

Místo vydání

New York

Místo konání akce

Thessaloniki

Datum konání akce

25. 9. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000445105400214