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Št. zadetkov: 5
Impact of leaching on chloride ingress profiles in concrete
Alisa Machner, Marie Helene Bjørndal, Aljoša Šajna, Nikola Mikanovic, Klaartje De Weerdt
Izvirni znanstveni članek
Oznake: prodor kloridov;napoved življenjske dobe;izcejanje;beton;portland;odprti dostop;chloride ingress;service life prediction;leaching;concrete;portlandite;open access;
To investigate the effect of leaching on chloride ingress profiles in concrete and mortar, we exposed concrete and mortar specimens for 90 and 180 days to two different exposure solutions: 3% NaCl, and 3% NaCl with KOH added to limit leaching. The solutions were replaced weekly. After exposure, we d ...
Leto: 2022 Vir: Zavod za gradbeništvo Slovenije (ZAG)
Measurement of the chloride resistance of environmentally friendly and durable concrete
Alisa Machner, Marie Helene Bjørndal, Aljoša Šajna, Lucija Hanžič, Yushan Gu, Benoit Bary, Klaartje De Weerdt
Objavljeni znanstveni prispevek na konferenci
Oznake: prodor kloridov;trajnost;nova veziva;nizek CO2;vzdržnost;beton;odprti dostop;chloride ingress;durability;novel binders;Low C02;sustainability;concrete;open access;
The increasing demand for concrete and thereby Portland cement, creates the need for novel low-clinker Portland composite cements. Concretes prepared with such novel composite cements need to show similar or even improved durability compared to concrete prepared with commonly used Portland composite ...
Leto: 2020 Vir: Zavod za gradbeništvo Slovenije (ZAG)
Experimental carbonation study for durability assessment of novel cementitious materials
Sebastijan Robič, Aljoša Šajna, Lucija Hanžič, Alisa Machner, Marie Helene Bjørndal, Klaartje De Weerdt, Yushan Gu, Benoit Bary, Rosamaria Lample
Objavljeni znanstveni prispevek na konferenci
Oznake: beton;vpijanje vode;karbonizacija;ocena trajnosti;verifikacija modela;odprti dostop;concrete;absorption of water;carbonation;durability assessment;model verification;open access;
The design process of concrete structures is carried out using standards and guidelines, while the durability predictions of concrete structures is supported only with exposure classes and experience-based requirements. To improve durability predictions of the carbonation resistance of concrete, a n ...
Leto: 2021 Vir: Zavod za gradbeništvo Slovenije (ZAG)
Experimental carbonation study for a durability assessment of novel cementitious materials
Lucija Hanžič, Sebastijan Robič, Alisa Machner, Marie Helene Bjørndal, Klaartje De Weerdt, Yushan Gu, Benoit Bary, Rosa Maria Lample Carreras, Aljoša Šajna
Izvirni znanstveni članek
Oznake: malta;absorpcija vode;karbonizacija;ocena trajnosti;verifikacija modela;odprti dostop;mortar;absorption of water;carbonation;durability assessment;model verification;open access;
Durability predictions of concrete structures are derived from experience-based require- ments and descriptive exposure classes. To support durability predictions, a numerical model related to the carbonation resistance of concrete was developed. The model couples the rate of carbonation with the dr ...
Leto: 2021 Vir: Zavod za gradbeništvo Slovenije (ZAG)
Effect of leaching on the composition of hydration phases during chloride exposure of mortar
Alisa Machner, Marie Helene Bjørndal, Harald Justnes, Lucija Hanžič, Aljoša Šajna, Yushan Gu, Benoit Bary, Mohsen Ben Haha, Mette R. Geiker, Klaartje De Weerdt
Izvirni znanstveni članek
Oznake: vezanje kloridov;Friedlova sol;Kuzelova sol;ph;GEMS;termodinamično modeliranje;odprti dostop;chloride binding;Friedel's salt;Kuzel's salt;thermodynamic modelling;open access;
Mortar specimens were exposed to either a 3% NaCl solution or a 3% NaCl+KOH solution for up to 180 days. Exposure to the NaCl solution provoked much more leaching than the NaCl+KOH exposure. Leaching strongly impacted the chloride ingress profiles. The extended leaching led to a maximum total chlori ...
Leto: 2022 Vir: Zavod za gradbeništvo Slovenije (ZAG)
Št. zadetkov: 5
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