A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Dynamic determination of sorption isotherm of cement based materials
A dynamic method of determining sorption isotherm is proposed. Changes in humidity boundary conditions were applied to specimens of hardened cement paste having various water-cement ratios, as well as to autoclaved aerated concrete, and water adsorption rates were continuously recorded in a sufficiently short period. The diffusion equation was analytically solved and was fitted to the adsorption rates resulting in the rapid estimation of equilibrium moisture content. Results of equilibrium moisture content, the primary data of moisture capacity, showed good agreement with literature values. The adsorption rate measurement took 8 h for autoclaved aerated concrete and 12 h for hardened cement paste with a measurement interval of 60 s to predict an equilibrium moisture content at an ambient relative humidity.
Dynamic determination of sorption isotherm of cement based materials
A dynamic method of determining sorption isotherm is proposed. Changes in humidity boundary conditions were applied to specimens of hardened cement paste having various water-cement ratios, as well as to autoclaved aerated concrete, and water adsorption rates were continuously recorded in a sufficiently short period. The diffusion equation was analytically solved and was fitted to the adsorption rates resulting in the rapid estimation of equilibrium moisture content. Results of equilibrium moisture content, the primary data of moisture capacity, showed good agreement with literature values. The adsorption rate measurement took 8 h for autoclaved aerated concrete and 12 h for hardened cement paste with a measurement interval of 60 s to predict an equilibrium moisture content at an ambient relative humidity.
Dynamic determination of sorption isotherm of cement based materials
Tada, Shinsaku (author) / Watanabe, Kazumasa (author)
Cement and Concrete Research ; 35 ; 2271-2277
2005
7 Seiten, 8 Quellen
Article (Journal)
English
Dynamic determination of sorption isotherm of cement based materials
| British Library Online Contents | 2005
Dynamic determination of sorption isotherm of cement based materials
| Online Contents | 2005
Validating various measures to accelerate the static gravimetric sorption isotherm determination
| Online Contents | 2013