Preparation of self-heating alkali-activated materials using industrial waste products

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F20%3A00340295" target="_blank" >RIV/68407700:21110/20:00340295 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.jclepro.2020.121116" target="_blank" >https://doi.org/10.1016/j.jclepro.2020.121116</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jclepro.2020.121116" target="_blank" >10.1016/j.jclepro.2020.121116</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Preparation of self-heating alkali-activated materials using industrial waste products

Popis výsledku v původním jazyce

Recently, materials with enhanced electrical properties appeared as very good candidates for self-heating applications. When exploited for icing prevention or deicing of roads, pavements, or runways, they may bring environmental benefits as they do not load the environment with chemicals, salts in particular. Utilization of waste products instead of traditional materials, such as Portland cement, makes these materials even friendlier to the environment. In this paper, three alkali-activated materials composed of slag, water glass, aggregates, water, and carbon black as an electrically conductive admixture are analyzed and compared to a reference one without any conductive admixture. Experimental results show that the designed materials have a very favorable combination of mechanical- (compressive strength up to 44 MPa and flexural strength up to 9 MPa) and electrical (electrical conductivity up to ~55 x 10-3 S/m) properties. Satisfactory self-heating properties in a low-voltage range are exhibited as well; 45 V DC heating of the samples can increase their temperature by up to 39 °C. The environmental assessment indicates that the designed alkali-activated materials can be considered as promising alternatives to cement-based composites with similar properties, reducing the carbon dioxide production by up to 44%.

Název v anglickém jazyce

Preparation of self-heating alkali-activated materials using industrial waste products

Popis výsledku anglicky

Recently, materials with enhanced electrical properties appeared as very good candidates for self-heating applications. When exploited for icing prevention or deicing of roads, pavements, or runways, they may bring environmental benefits as they do not load the environment with chemicals, salts in particular. Utilization of waste products instead of traditional materials, such as Portland cement, makes these materials even friendlier to the environment. In this paper, three alkali-activated materials composed of slag, water glass, aggregates, water, and carbon black as an electrically conductive admixture are analyzed and compared to a reference one without any conductive admixture. Experimental results show that the designed materials have a very favorable combination of mechanical- (compressive strength up to 44 MPa and flexural strength up to 9 MPa) and electrical (electrical conductivity up to ~55 x 10-3 S/m) properties. Satisfactory self-heating properties in a low-voltage range are exhibited as well; 45 V DC heating of the samples can increase their temperature by up to 39 °C. The environmental assessment indicates that the designed alkali-activated materials can be considered as promising alternatives to cement-based composites with similar properties, reducing the carbon dioxide production by up to 44%.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

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

Projekt

<a href="/cs/project/GA19-11516S" target="_blank" >GA19-11516S: Geopolymery pro sofistikované aplikace ve stavebnictví</a><br>

Návaznosti

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

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Journal of Cleaner Production

ISSN

0959-6526

e-ISSN

1879-1786

Svazek periodika

260

Číslo periodika v rámci svazku

July

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

32

Strana od-do

—

Kód UT WoS článku

000531488900008

EID výsledku v databázi Scopus

2-s2.0-85081666832