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Experimental carbonation study for durability assessment of novel cementitious materials [Elektronski vir]Robič, Sebastijan ...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 numerical model is being developed within the Horizon 2020 project EnDurCrete, coupling the rate of carbonation, and the drying rate. To verify the numerical model, an accelerated carbonation study was carried out. Experiments were conducted on mortars incorporating a novel CEM II/C (S-LL) cement, developed within the EnDurCrete project, and a commercially available reference cementCEM II/A-S. EnDurCrete mortars (EnM) and reference mortars (RefM) were prepared with water-cement ratios of 0.6 and 0.5 (denoted with label extensions -06 and -05). Visual assessments and thermogravimetric analysis (TGA) were used to measure the carbonation rates, which were found to be ~1.0 mm day-0.5 in EnM-06 and ~0.6 mm day-0.5 in RefM-06, while in EnM-05 and RefM-05 the values were ~0.7 and ~0.2 mm day-0.5 respectively. Additionally, TGA shows that the initial portlandite (CH) content is ~1.5 wt% in EnM-06 as opposed to ~3.0 wt% in RefM-06. The difference in the initial CH content in the two hydrated binders might explain the difference in their carbonation rate. During the moisture transport experiments a gravimetric method was used to determine mass changes as specimens underwent drying and resaturation with and without CO2 present. The drying led to a decrease in mass, but in the presence of CO2 this mass loss was compensated by the mass gain due to uptake of CO2 during carbonation. The resaturation experiments indicate an increase in the suction porosity in the carbonated samples compared to the non-carbonated samples.Vir: Construction materials for a sustainable future [Elektronski vir] : proceedings of the 2nd International Conference CoMS 2020/21 : 20-21 April 2021, online conference : volume 2 (Str. 128-135)Vrsta gradiva - prispevek na konferenci ; neleposlovje za odrasleLeto - 2021Jezik - angleškiCOBISS.SI-ID - 64712707
Povezava(-e):
http://www.zag.si/dl/coms2020-21-proceedings-2.pdfOdprti dostop
DiRROS - Digitalni repozitorij raziskovalnih organizacij Slovenije
Avtor
Robič, Sebastijan |
Šajna, Aljoša |
Hanžič, Lucija |
Machner, Alisa |
Bjørndal, Marie Helene |
De Weerdt, Klaartje |
Gu, Yushan |
Bary, Benoit |
Lample, Rosamaria
Teme
beton |
vpijanje vode |
karbonizacija |
ocena trajnosti |
verifikacija modela |
odprti dostop |
concrete |
absorption of water |
carbonation |
durability assessment |
model verification |
open access
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Avtor | Robič, Sebastijan ... |
Naslov | Experimental carbonation study for durability assessment of novel cementitious materials [Elektronski vir] |
Datum objave | 2021-01-01 |
COBISS.SI-ID | 64712707 |
Verzija objave v repozitoriju | Založnikova različica |
Licenca objave v repozitoriju | Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna |
Embargo | Takojšnja javna objava |
Projekti, iz katerih je bila financirana objava
Naziv | Akronim | Številka projekta | Financer |
---|---|---|---|
New Environmental friendly and Durable conCrete, integrating industrial by-products and hybrid systems, for civil, industrial and offshore applications – EnDurCrete | EnDurCrete | 760639 |
European Commission |
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Robič, Sebastijan | 50085 |
Šajna, Aljoša | 13200 |
Hanžič, Lucija | 16432 |
Machner, Alisa | ![]() |
Bjørndal, Marie Helene | ![]() |
De Weerdt, Klaartje | ![]() |
Gu, Yushan | ![]() |
Bary, Benoit | ![]() |
Lample, Rosamaria | ![]() |
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