Hygric and thermal properties of lime plasters modified with wood chips ash-based mineral admixture

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00332433" target="_blank" >RIV/68407700:21110/19:00332433 - isvavai.cz</a>

Výsledek na webu

<a href="https://aip.scitation.org/doi/abs/10.1063/1.5114138" target="_blank" >https://aip.scitation.org/doi/abs/10.1063/1.5114138</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.5114138" target="_blank" >10.1063/1.5114138</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Hygric and thermal properties of lime plasters modified with wood chips ash-based mineral admixture

Popis výsledku v původním jazyce

Information on plasters hygrothermal performance is of the particular importance for their applicability, especially in such applications, where high moisture content of the substrate is anticipated. Among such applications belong above all historical and older buildings, where horizontal water-proof insulation is usually missing. Therefore, hygric and thermal properties of newly developed lime plasters modified with wood chips ash-based mineral admixture are studied in the paper. As wood chips ash is pozzolana active, in plasters composition, lime hydrate was partially substituted by wood chips ash coming from biomass incinerator for heat and electricity production. The replacement ratio was 5, 10, and 15 mass % respectively. The dosage of batch water was maintained similar for all tested plasters. For basic characterization of studied materials, their bulk density, specific density and total open porosity were measured. Among hygric properties, apparent moisture diffusivity, water absorption coefficient, saturation moisture content and water vapor transmission parameters were accessed. As heat transport and storage significantly affect plasters performance in a real environment, their thermal conductivity and volumetric heat capacity were measured. Since the total open porosity was almost similar for all tested plasters, and their hygric and thermal properties varied in dependence on lime hydrate substitution, additional pore size distribution measurement was performed for explanation of obtained data. Based on performed test and accessed data, wood chips ash was found to be an alternative eco-efficient mineral admixture applicable in plaster mix composition.

Název v anglickém jazyce

Hygric and thermal properties of lime plasters modified with wood chips ash-based mineral admixture

Popis výsledku anglicky

Information on plasters hygrothermal performance is of the particular importance for their applicability, especially in such applications, where high moisture content of the substrate is anticipated. Among such applications belong above all historical and older buildings, where horizontal water-proof insulation is usually missing. Therefore, hygric and thermal properties of newly developed lime plasters modified with wood chips ash-based mineral admixture are studied in the paper. As wood chips ash is pozzolana active, in plasters composition, lime hydrate was partially substituted by wood chips ash coming from biomass incinerator for heat and electricity production. The replacement ratio was 5, 10, and 15 mass % respectively. The dosage of batch water was maintained similar for all tested plasters. For basic characterization of studied materials, their bulk density, specific density and total open porosity were measured. Among hygric properties, apparent moisture diffusivity, water absorption coefficient, saturation moisture content and water vapor transmission parameters were accessed. As heat transport and storage significantly affect plasters performance in a real environment, their thermal conductivity and volumetric heat capacity were measured. Since the total open porosity was almost similar for all tested plasters, and their hygric and thermal properties varied in dependence on lime hydrate substitution, additional pore size distribution measurement was performed for explanation of obtained data. Based on performed test and accessed data, wood chips ash was found to be an alternative eco-efficient mineral admixture applicable in plaster mix composition.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GA17-02815S" target="_blank" >GA17-02815S: Výzkum a vývoj vysokohodnotných kompozitů obsahujících popílek z biomasy</a><br>

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

International Conference on Numerical Analysis and Applied Mathematics (ICNAAM-2018)

ISBN

978-0-7354-1854-7

ISSN

0094-243X

e-ISSN

—

Počet stran výsledku

4

Strana od-do

—

Název nakladatele

American Institute of Physics Inc.

Místo vydání

—

Místo konání akce

Rhodes

Datum konání akce

13. 9. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000521108600146