DSC and TG Analysis of a Blended Binder Based on Waste Ceramic Powder and Portland Cement

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F16%3A00242668" target="_blank" >RIV/68407700:21110/16:00242668 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s10765-016-2043-3" target="_blank" >http://dx.doi.org/10.1007/s10765-016-2043-3</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10765-016-2043-3" target="_blank" >10.1007/s10765-016-2043-3</a>

Jazyk výsledku

angličtina

Název v původním jazyce

DSC and TG Analysis of a Blended Binder Based on Waste Ceramic Powder and Portland Cement

Popis výsledku v původním jazyce

Cement industry belongs to the business sectors characteristic by high energy consumption and high CO2 generation. Therefore, any replacement of cement in concrete by waste materials can lead to immediate environmental benefits. In this paper, a possible use of waste ceramic powder in blended binders is studied. At first, the chemical composition of Portland cement and ceramic powder is analyzed using the X-ray fluorescence method. Then, thermal and mechanical characterization of hydrated blended binders containing up to 24% ceramic is carried out within the time period of 2 days to 28 days. The differential scanning calorimetry and thermogravimetry measurements are performed in the temperature range of 25 degrees C to 1000 degrees C in an argon atmosphere. The measurement of compressive strength is done according to the European standards for cement mortars. The thermal analysis results in the identification of temperature and quantification of enthalpy and mass changes related to the liberation of physically bound water, calcium-silicate-hydrates dehydration and portlandite, vaterite and calcite decomposition. The portlandite content is found to decrease with time for all blends which provides the evidence of the pozzolanic activity of ceramic powder even within the limited monitoring time of 28 days. Taking into account the favorable results obtained in the measurement of compressive strength, it can be concluded that the applied waste ceramic powder can be successfully used as a supplementary cementing material to Portland cement in an amount of up to 24 mass%.

Název v anglickém jazyce

DSC and TG Analysis of a Blended Binder Based on Waste Ceramic Powder and Portland Cement

Popis výsledku anglicky

Cement industry belongs to the business sectors characteristic by high energy consumption and high CO2 generation. Therefore, any replacement of cement in concrete by waste materials can lead to immediate environmental benefits. In this paper, a possible use of waste ceramic powder in blended binders is studied. At first, the chemical composition of Portland cement and ceramic powder is analyzed using the X-ray fluorescence method. Then, thermal and mechanical characterization of hydrated blended binders containing up to 24% ceramic is carried out within the time period of 2 days to 28 days. The differential scanning calorimetry and thermogravimetry measurements are performed in the temperature range of 25 degrees C to 1000 degrees C in an argon atmosphere. The measurement of compressive strength is done according to the European standards for cement mortars. The thermal analysis results in the identification of temperature and quantification of enthalpy and mass changes related to the liberation of physically bound water, calcium-silicate-hydrates dehydration and portlandite, vaterite and calcite decomposition. The portlandite content is found to decrease with time for all blends which provides the evidence of the pozzolanic activity of ceramic powder even within the limited monitoring time of 28 days. Taking into account the favorable results obtained in the measurement of compressive strength, it can be concluded that the applied waste ceramic powder can be successfully used as a supplementary cementing material to Portland cement in an amount of up to 24 mass%.

Druh

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

CEP obor

JN - Stavebnictví

OECD FORD obor

—

Projekt

<a href="/cs/project/GA14-04522S" target="_blank" >GA14-04522S: Výzkum procesů při vytváření pevné struktury v soustavě oxid křemičitý-portlandský cement ve vztahu k vlastnostem pojiva</a><br>

Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

International Journal of Thermophysics

ISSN

0195-928X

e-ISSN

—

Svazek periodika

37

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

14

Strana od-do

—

Kód UT WoS článku

000370340100008

EID výsledku v databázi Scopus

2-s2.0-84957590824