Alkali-activated aluminosilicate composite with heat-resistant lightweight aggregates exposed to high temperatures: mechanical and water transport properties

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F10%3A00161915" target="_blank" >RIV/68407700:21110/10:00161915 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216305:26110/10:PU84890

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Alkali-activated aluminosilicate composite with heat-resistant lightweight aggregates exposed to high temperatures: mechanical and water transport properties

Popis výsledku v původním jazyce

A lightweight composite material with alkali-activated aluminosilicate binder and a heat-resistant aggregate mixture of expanded vermiculite and electrical porcelain is investigated. Experimental results show that the studied material has very good high-temperature properties which are quite superior to Portland-cement concrete. The open porosity increases only up to 7 % between room temperature and 1000 °C. The material keeps 35 % of its original compressive strength and 66 % of its flexural strength even in the worst case of 800 °C pre-heating. After pre-heating to 1200 °C the compressive strength is found 30 % higher and flexural strength three-and-half times higher than in the reference state. Liquid moisture diffusivity is after the heat treatmentup to three orders of magnitude higher than in reference room-temperature conditions. The water vapor transport parameters allow fast removal of water vapor and other gaseous compounds over the whole studied heat-treatment range.

Název v anglickém jazyce

Alkali-activated aluminosilicate composite with heat-resistant lightweight aggregates exposed to high temperatures: mechanical and water transport properties

Popis výsledku anglicky

A lightweight composite material with alkali-activated aluminosilicate binder and a heat-resistant aggregate mixture of expanded vermiculite and electrical porcelain is investigated. Experimental results show that the studied material has very good high-temperature properties which are quite superior to Portland-cement concrete. The open porosity increases only up to 7 % between room temperature and 1000 °C. The material keeps 35 % of its original compressive strength and 66 % of its flexural strength even in the worst case of 800 °C pre-heating. After pre-heating to 1200 °C the compressive strength is found 30 % higher and flexural strength three-and-half times higher than in the reference state. Liquid moisture diffusivity is after the heat treatmentup to three orders of magnitude higher than in reference room-temperature conditions. The water vapor transport parameters allow fast removal of water vapor and other gaseous compounds over the whole studied heat-treatment range.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JI - Kompositní materiály

OECD FORD obor

—

Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

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

Název periodika

Cement and Concrete Composites

ISSN

0958-9465

e-ISSN

—

Svazek periodika

32

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

—

Kód UT WoS článku

000274990600009

EID výsledku v databázi Scopus

—