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Naslov:The effect of crystalline waterproofing a dmixtures on the self-healing and permeability of concrete
Avtorji:ID Gojević, Anita (Avtor)
ID Ducman, Vilma (Avtor)
ID Netinger Grubeša, Ivanka (Avtor)
ID Baričević, Ana (Avtor)
ID Banjad Pečur, Ivana (Avtor)
Datoteke:URL URL - Izvorni URL, za dostop obiščite https://www.mdpi.com/1996-1944/14/8/1860
Opis: Open access
 
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MD5: BE646697841692430FD8E4A0509892F6
 
Jezik:Angleški jezik
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:Logo ZAG - Zavod za gradbeništvo Slovenije
Povzetek:This paper investigates the effectiveness of a specific crystalline waterproofing admixture (CWA) in concrete as a function of a water–binder ratio. Four concrete mixes with and without CWA were prepared; two of them with a water–binder ratio of 0.45 and two of them with a water– binder ratio of 0.55. Water permeability and compressive strength were tested on hardened concrete specimens and self-healing of cracks over time was observed. Cement paste and CWA paste were prepared to clarify the results obtained on the concrete specimens. SEM and EDS and XRD and FTIR were performed on the hardened pastes to explain the mechanism of CWA working. The results show that the addition of CWA had no significant effect on the compressive strength of the concrete, but reduced the water penetration depth in the concrete, and the reduction was more effective for mixes with lower water–binder ratio. Regarding the self-healing effect, it can be concluded that the addition of CWA improves the crack healing in concrete, but the efficiency of self-healing is highly dependent on the initial crack width. The mechanisms involved in the reduction of water penetration depth and crack healing in concrete can be explained by different mechanisms; one is creation of the CSH gel from unreacted clinker grains, then formation carbonate, and additional mechanism is gel formation (highly expansive Mg-rich hydro-carbonate) from magnesium based additives. The presence of sodium silicate, which would transform into carbonate/bicarbonate, also cannot be excluded.
Ključne besede:slag, self healing concrete, crystal admixture, microstructural analysis
Status publikacije:Objavljeno
Verzija publikacije:Objavljena publikacija
Datum objave:09.04.2021
Založnik:Molecular Diversity Preservation International
Leto izida:2021
Št. strani:str. 1-14
Številčenje:Vol. 14, iss. 8
PID:20.500.12556/DiRROS-15867 Novo okno
UDK:620.1/2
ISSN pri članku:1996-1944
DOI:10.3390/ma14081860 Novo okno
COBISS.SI-ID:59413251 Novo okno
Avtorske pravice:© 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Opomba:Nasl. z nasl. zaslona; Opis vira z dne 143 4. 2021; Št. članka 1860;
Datum objave v DiRROS:03.07.2023
Število ogledov:793
Število prenosov:566
Metapodatki:XML DC-XML DC-RDF
:
GOJEVIĆ, Anita, DUCMAN, Vilma, NETINGER GRUBEŠA, Ivanka, BARIČEVIĆ, Ana in BANJAD PEČUR, Ivana, 2021, The effect of crystalline waterproofing a dmixtures on the self-healing and permeability of concrete. Materials [na spletu]. 2021. Vol. 14, no. 8, p. 1–14. [Dostopano 11 april 2025]. DOI 10.3390/ma14081860. Pridobljeno s: https://dirros.openscience.si/IzpisGradiva.php?lang=slv&id=15867
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Gradivo je del revije

Naslov:Materials
Skrajšan naslov:Materials
Založnik:MDPI
ISSN:1996-1944
COBISS.SI-ID:33588485 Novo okno

Gradivo je financirano iz projekta

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:P2-0273
Naslov:Gradbeni objekti in materiali

Licence

Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:samopopravljivi beton, kristalinični dodatki, mikrostrukturne analize


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