A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Long-term performance of cement paste during combined calcium leaching-sulfate attack: Kinetics and size effect
This paper presents experimental results obtained on cement paste samples (water/cement ratio of 0.4) subjected to a low-concentration (15 mmol/l) external sulfate attack during several weeks. Chemical and microstructural analyses include the continuous monitoring of calcium loss and sulfate consumption within the cement paste, periodic layer by layer X-ray diffraction (XRD)/energy-dispersive spectrometer (EDS) analyses of the solid constituents of the cement matrix (ettringite, portlandite, gypsum) within the calcium-depleted part of the samples. Scanning electron microscopy (SEM) and visual observations are used to follow the crack pattern evolution during the external sulfate attack. The relation between the size of the specimen and crack initiation/development is investigated experimentally by performing tests on samples with different thickness/diameter ratios.
Long-term performance of cement paste during combined calcium leaching-sulfate attack: Kinetics and size effect
This paper presents experimental results obtained on cement paste samples (water/cement ratio of 0.4) subjected to a low-concentration (15 mmol/l) external sulfate attack during several weeks. Chemical and microstructural analyses include the continuous monitoring of calcium loss and sulfate consumption within the cement paste, periodic layer by layer X-ray diffraction (XRD)/energy-dispersive spectrometer (EDS) analyses of the solid constituents of the cement matrix (ettringite, portlandite, gypsum) within the calcium-depleted part of the samples. Scanning electron microscopy (SEM) and visual observations are used to follow the crack pattern evolution during the external sulfate attack. The relation between the size of the specimen and crack initiation/development is investigated experimentally by performing tests on samples with different thickness/diameter ratios.
Long-term performance of cement paste during combined calcium leaching-sulfate attack: Kinetics and size effect
Planel, D. (author) / Sercombe, J. (author) / Le Bescop, P. (author) / Adenot, F. (author) / Torrenti, J.M. (author)
Cement and Concrete Research ; 36 ; 137-143
2006
7 Seiten, 19 Quellen
Article (Journal)
English
Auslaugen (Verfahrenstechnik) , Reaktionskinetik , Schwefelverbindung , Mikrostruktur , Risseinleitung , Mikroriss , Rissbildung , Röntgenbeugung , Röntgenanalyse , Rasterelektronenmikroskopie , Zementpaste , chemischer Angriff , Ettringit , hydraulischer Zement , Wasserabbinden von Zement , Gips , Portlandzement , Calciumhydroxid
| British Library Online Contents | 2006
Modelling calcium leaching kinetics of cement asphalt paste
| Online Contents | 2018
Modelling calcium leaching kinetics of cement asphalt paste
| Springer Verlag | 2018
Long-Term Performance of Blended Cement Paste Containing Fly Ash against Sodium Sulfate Attack
| British Library Online Contents | 2018