A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Carbonation of ternary building cementing materials
Abstract The carbonation processes of ettringite and calcium aluminate hydrates phases developed by hydration of calcium aluminate cement, fly ash and calcium sulphate ternary mixtures have been studied. The hydrated samples were submitted to 4% of CO2 in a carbonation chamber, and were analysed, previous carbonation and after 14 and 90days of carbonation time, by infrared spectroscopy and X-ray diffraction; the developed morphology was performed with the 14days carbonated samples. The results evidenced that ettringite reacts with CO2 after 14days of exposition time and evolves totally at 90days; the developed hydrated phases C3AH6 in samples with major CAC content, also reacts with CO2. Due to carbonation, calcium carbonate – mainly vaterite but also aragonite-, depending on the initial formulation, aluminium hydroxide and gypsum were detected.
Carbonation of ternary building cementing materials
Abstract The carbonation processes of ettringite and calcium aluminate hydrates phases developed by hydration of calcium aluminate cement, fly ash and calcium sulphate ternary mixtures have been studied. The hydrated samples were submitted to 4% of CO2 in a carbonation chamber, and were analysed, previous carbonation and after 14 and 90days of carbonation time, by infrared spectroscopy and X-ray diffraction; the developed morphology was performed with the 14days carbonated samples. The results evidenced that ettringite reacts with CO2 after 14days of exposition time and evolves totally at 90days; the developed hydrated phases C3AH6 in samples with major CAC content, also reacts with CO2. Due to carbonation, calcium carbonate – mainly vaterite but also aragonite-, depending on the initial formulation, aluminium hydroxide and gypsum were detected.
Carbonation of ternary building cementing materials
Fernández-Carrasco, Lucia (author) / Torréns-Martín, D. (author) / Martínez-Ramírez, S. (author)
Cement and Concrete Composites ; 34 ; 1180-1186
2012-06-28
7 pages
Article (Journal)
Electronic Resource
English
CAC , Fly ash , Calcium sulphate , Ettringite , Carbonation
Carbonation of ternary building cementing materials
| Online Contents | 2012
| British Library Conference Proceedings | 2000
| British Library Online Contents | 2000