Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Microstructural characterization of CO2-cured calcium silicate cement
Calcium silicate cement (CSC) is a non-hydraulic cement that solidifies in moist conditions with CO2 curing. To contribute to the standardization of CSC, the material has been produced locally, and the microstructural characterization of the carbonation products of CSC samples with water-to-cement (W/C) ratios of 0.35, 0.4 and 0.45 at 10% CO2 concentration using XRD, 29Si MAS NMR, 1H NMR and compressive strength tests. CSC primarily consists of Q0, Q1 and Q2 silica species, among which β-C2S and β-CS exhibit higher reactivity to CO2 curing. The obtained results confirm the presence of calcite and amorphous phases as the main carbonation products, which become more prominent with an elapse in CO2 curing. The CO2 uptake of CSC samples with a W/C ratio of 0.45 was 8 g per 100 g binder, although a higher W/C ratio induced a relatively larger capillary and gel pore width, consequently reducing the strength of CSC.
Microstructural characterization of CO2-cured calcium silicate cement
Calcium silicate cement (CSC) is a non-hydraulic cement that solidifies in moist conditions with CO2 curing. To contribute to the standardization of CSC, the material has been produced locally, and the microstructural characterization of the carbonation products of CSC samples with water-to-cement (W/C) ratios of 0.35, 0.4 and 0.45 at 10% CO2 concentration using XRD, 29Si MAS NMR, 1H NMR and compressive strength tests. CSC primarily consists of Q0, Q1 and Q2 silica species, among which β-C2S and β-CS exhibit higher reactivity to CO2 curing. The obtained results confirm the presence of calcite and amorphous phases as the main carbonation products, which become more prominent with an elapse in CO2 curing. The CO2 uptake of CSC samples with a W/C ratio of 0.45 was 8 g per 100 g binder, although a higher W/C ratio induced a relatively larger capillary and gel pore width, consequently reducing the strength of CSC.
Microstructural characterization of CO2-cured calcium silicate cement
Amanuel Bersisa (Autor:in) / Ki-Yeon Moon (Autor:in) / G.M. Kim (Autor:in) / Jin-Sang Cho (Autor:in) / Solmoi Park (Autor:in)
2024
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
Metadata by DOAJ is licensed under CC BY-SA 1.0
Microstructural Investigation of Carbonation of Calcium Silicate Hydrate in Hydrated Cement Paste
| British Library Conference Proceedings | 2011
| Europäisches Patentamt | 2018
CALCIUM SULFOALUMINATE (CSA) CEMENT CLINKER WITH CALCIUM MAGNESIUM SILICATE
| Europäisches Patentamt | 2025
| Europäisches Patentamt | 2015
Apatite bone cement reinforced with calcium silicate fibers
| Tema Archiv | 2014