The role of ceramic powder in sustainable thermal-resistant cement-based composites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F25%3A00383779" target="_blank" >RIV/68407700:21110/25:00383779 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.conbuildmat.2025.142095" target="_blank" >https://doi.org/10.1016/j.conbuildmat.2025.142095</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.conbuildmat.2025.142095" target="_blank" >10.1016/j.conbuildmat.2025.142095</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The role of ceramic powder in sustainable thermal-resistant cement-based composites

Popis výsledku v původním jazyce

This study investigates the potential of substituting calcium aluminate cement (CAC) with ceramic powder (CP) and reactive alumina (RA) to create thermally resistant and sustainable cement-based composites. A total of 14 mixes were designed with varying admixture ratios up to 60 % of CAC were evaluated, with two ternary systems (A15-C15 and A15-C30) selected for detailed analysis. While CP alone increased porosity and reduced strength, its combination with RA significantly improved performance. The A15-C15 and A15-C30 mixtures achieved compressive strengths of 107.6 MPa and 93.5 MPa, respectively, with reduced porosity and enhanced thermal resistance up to 1400 °C. Calorimetry showed that A15-C15 maintained high hydration activity (280 J/g), while A15-C30 followed an altered hydration path. Phase and thermal analyses revealed altered phase composition with reduced metastable hydrates and calcium aluminosilicate hydrates. Aging confirmed the long-term durability of studied composites.

Název v anglickém jazyce

The role of ceramic powder in sustainable thermal-resistant cement-based composites

Popis výsledku anglicky

This study investigates the potential of substituting calcium aluminate cement (CAC) with ceramic powder (CP) and reactive alumina (RA) to create thermally resistant and sustainable cement-based composites. A total of 14 mixes were designed with varying admixture ratios up to 60 % of CAC were evaluated, with two ternary systems (A15-C15 and A15-C30) selected for detailed analysis. While CP alone increased porosity and reduced strength, its combination with RA significantly improved performance. The A15-C15 and A15-C30 mixtures achieved compressive strengths of 107.6 MPa and 93.5 MPa, respectively, with reduced porosity and enhanced thermal resistance up to 1400 °C. Calorimetry showed that A15-C15 maintained high hydration activity (280 J/g), while A15-C30 followed an altered hydration path. Phase and thermal analyses revealed altered phase composition with reduced metastable hydrates and calcium aluminosilicate hydrates. Aging confirmed the long-term durability of studied composites.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GA23-04772S" target="_blank" >GA23-04772S: Fyzikální a chemické procesy v alkalicky aktivované keramice vystavené vysokým teplotám</a><br>

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Construction and Building Materials

ISSN

0950-0618

e-ISSN

1879-0526

Svazek periodika

487

Číslo periodika v rámci svazku

August

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

16

Strana od-do

1-16

Kód UT WoS článku

001506730900001

EID výsledku v databázi Scopus

2-s2.0-105007063623