Impact of surface treatment of historic bricks on the process of water vapours diffusion

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21610%2F20%3A00348295" target="_blank" >RIV/68407700:21610/20:00348295 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.4028/www.scientific.net/KEM.868.98" target="_blank" >https://doi.org/10.4028/www.scientific.net/KEM.868.98</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.868.98" target="_blank" >10.4028/www.scientific.net/KEM.868.98</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Impact of surface treatment of historic bricks on the process of water vapours diffusion

Popis výsledku v původním jazyce

The article is dealing with the impact of selected types of surface finish of historic bricks on their diffusion properties, i.e. on the process of their spontaneous self-drying. Within the pilot experiment was monitored diffusion flow of water vapours going from humid brick fragment through its surface finish to the surrounding environment. Brick fragment was saturated with water to a degree usually corresponding to common humidity of uninsulated underground brickwork of historic buildings. The surrounding environment had parameters of the common heated object for residential or administrative purposes or an object for storage of things sensitive to the impact of high relative air humidity. Test results proved that any surface finish of the brickwork, even its hydrophobisation is significantly slowing down the process of drying of the masonry compared to the speed of drying of the untreated brickwork. It is evident from the course of lines of diffusion flows that the process of water vapours diffusion is most intense at the beginning of the period (about 5 to 10 days) and after this period the diffusion flow speed goes to the long-term stabilisation of diffusion flow speed, in such a way that its course is in average corresponding to linear functional dependence on time. In the conclusion of the article, we introduce on practical example calculation of real-time drying up of the masonry in historic building selected space flooded with flood water where is now running process of natural drying without additional humidity sources.

Název v anglickém jazyce

Impact of surface treatment of historic bricks on the process of water vapours diffusion

Popis výsledku anglicky

The article is dealing with the impact of selected types of surface finish of historic bricks on their diffusion properties, i.e. on the process of their spontaneous self-drying. Within the pilot experiment was monitored diffusion flow of water vapours going from humid brick fragment through its surface finish to the surrounding environment. Brick fragment was saturated with water to a degree usually corresponding to common humidity of uninsulated underground brickwork of historic buildings. The surrounding environment had parameters of the common heated object for residential or administrative purposes or an object for storage of things sensitive to the impact of high relative air humidity. Test results proved that any surface finish of the brickwork, even its hydrophobisation is significantly slowing down the process of drying of the masonry compared to the speed of drying of the untreated brickwork. It is evident from the course of lines of diffusion flows that the process of water vapours diffusion is most intense at the beginning of the period (about 5 to 10 days) and after this period the diffusion flow speed goes to the long-term stabilisation of diffusion flow speed, in such a way that its course is in average corresponding to linear functional dependence on time. In the conclusion of the article, we introduce on practical example calculation of real-time drying up of the masonry in historic building selected space flooded with flood water where is now running process of natural drying without additional humidity sources.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20102 - Construction engineering, Municipal and structural engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the 21st Conference on the Rehabilitation and Reconstruction of Buildings. Key Engineering Materials Vol. 868

ISBN

978-3-0357-3653-3

ISSN

1013-9826

e-ISSN

1662-9795

Počet stran výsledku

7

Strana od-do

98-104

Název nakladatele

Transtech Publications

Místo vydání

Zürich

Místo konání akce

Praha

Datum konání akce

28. 11. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—