Changes of wetting properties and surface free energy at the time of hydrophobized concretes with boiler slag and coal combustion dust
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F20%3A00343885" target="_blank" >RIV/68407700:21110/20:00343885 - isvavai.cz</a>
Výsledek na webu
<a href="https://doi.org/10.1063/5.0034844" target="_blank" >https://doi.org/10.1063/5.0034844</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/5.0034844" target="_blank" >10.1063/5.0034844</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Changes of wetting properties and surface free energy at the time of hydrophobized concretes with boiler slag and coal combustion dust
Popis výsledku v původním jazyce
The paper is devoted to the assessment of the effectiveness of surface hydrophobization of high performance concrete (HPC) containing boiler slag (BS) and coal combustion dust (CCD). The following tests were performed: density, porosity, absorptivity, capability to diffuse water vapour, compressive strength, flexural strength, frost resistance, contact angle. The Wu method was used for the determination of surface free energy (SFE). The conducted studies showed that surface hydrophobization reduced the water absorption by weight and the capability to diffuse water vapour. Fourteen days after the test, a 69.9% drop in the absorptivity of the concrete containing 10% of BS was observed, in addition to 67% reduction in water vapour diffusion. Hydrophobization decreased the SFE in concrete with 5% boiler slag addition by a factor of 4, increased the contact angle as well as contributed to a 12-fold drop in mass loss following a frost resistance test, in the concretes with 10% BS addition.
Název v anglickém jazyce
Changes of wetting properties and surface free energy at the time of hydrophobized concretes with boiler slag and coal combustion dust
Popis výsledku anglicky
The paper is devoted to the assessment of the effectiveness of surface hydrophobization of high performance concrete (HPC) containing boiler slag (BS) and coal combustion dust (CCD). The following tests were performed: density, porosity, absorptivity, capability to diffuse water vapour, compressive strength, flexural strength, frost resistance, contact angle. The Wu method was used for the determination of surface free energy (SFE). The conducted studies showed that surface hydrophobization reduced the water absorption by weight and the capability to diffuse water vapour. Fourteen days after the test, a 69.9% drop in the absorptivity of the concrete containing 10% of BS was observed, in addition to 67% reduction in water vapour diffusion. Hydrophobization decreased the SFE in concrete with 5% boiler slag addition by a factor of 4, increased the contact angle as well as contributed to a 12-fold drop in mass loss following a frost resistance test, in the concretes with 10% BS addition.
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
—
OECD FORD obor
20101 - Civil engineering
Návaznosti výsledku
Projekt
—
Návaznosti
S - Specificky vyzkum na vysokych skolach
Ostatní
Rok uplatnění
2020
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název statě ve sborníku
Thermophysics 2020, 25th International Meeting
ISBN
978-0-7354-4041-8
ISSN
—
e-ISSN
0094-243X
Počet stran výsledku
7
Strana od-do
"020005-1"-"020005-7"
Název nakladatele
AIP Conference Proceedings
Místo vydání
New York
Místo konání akce
Smolenice
Datum konání akce
7. 9. 2020
Typ akce podle státní příslušnosti
WRD - Celosvětová akce
Kód UT WoS článku
—