Experimental Determination of Heat and Moisture Transport Properties of AAC in the Range of Subzero to Room Temperatures

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00326118" target="_blank" >RIV/68407700:21110/19:00326118 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1007/s10765-018-2464-2" target="_blank" >https://doi.org/10.1007/s10765-018-2464-2</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10765-018-2464-2" target="_blank" >10.1007/s10765-018-2464-2</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Experimental Determination of Heat and Moisture Transport Properties of AAC in the Range of Subzero to Room Temperatures

Popis výsledku v původním jazyce

Thermal and hygric parameters of porous building materials are often determined as single values only. Neglecting their dependence on temperature and moisture can though lead to higher uncertainties in hygrothermal and energy-related calculations. In this paper, thermal conductivity, specific heat capacity, water vapor diffusion permeability and moisture diffusivity of autoclaved aerated concrete are measured as functions of both temperature and moisture in the ranges characteristic for their application in building structures. Experimental results show temperature as a very significant factor affecting all parameters, but its combination with moisture in different forms is even more important. The combined effects of temperature and moisture are most remarkable for thermal conductivity and moisture diffusivity, which can vary within a range of two orders of magnitude. The water vapor diffusion permeability increases with decreasing temperature despite the decreasing amount of water vapor diffused through the sample. The specific heat capacity increases continuously with both temperature and moisture. 2018, Springer Science+Business Media, LLC, part of Springer Nature.

Název v anglickém jazyce

Experimental Determination of Heat and Moisture Transport Properties of AAC in the Range of Subzero to Room Temperatures

Popis výsledku anglicky

Thermal and hygric parameters of porous building materials are often determined as single values only. Neglecting their dependence on temperature and moisture can though lead to higher uncertainties in hygrothermal and energy-related calculations. In this paper, thermal conductivity, specific heat capacity, water vapor diffusion permeability and moisture diffusivity of autoclaved aerated concrete are measured as functions of both temperature and moisture in the ranges characteristic for their application in building structures. Experimental results show temperature as a very significant factor affecting all parameters, but its combination with moisture in different forms is even more important. The combined effects of temperature and moisture are most remarkable for thermal conductivity and moisture diffusivity, which can vary within a range of two orders of magnitude. The water vapor diffusion permeability increases with decreasing temperature despite the decreasing amount of water vapor diffused through the sample. The specific heat capacity increases continuously with both temperature and moisture. 2018, Springer Science+Business Media, LLC, part of Springer Nature.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA17-01365S" target="_blank" >GA17-01365S: Modelování a experimentální ověření vlivu zmrazovacích cyklů na degradaci porézních stavebních materiálů</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 periodika

International Journal of Thermophysics

ISSN

0195-928X

e-ISSN

1572-9567

Svazek periodika

40

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

—

Kód UT WoS článku

000449509400001

EID výsledku v databázi Scopus

2-s2.0-85056096279