Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Nanoparticles as accelerators for cement hydration
Nanoparticles are known to have an Influence on the kinetics of cement hydration. Therefore they have the potential to substitute conventional setting and hardening accelerators and their undesired side effects. There are two different approaches for nanoparticles as accelerators for cement hydration. Either stimulation of the nucleation processes during early cement hydration by nanoparticle addition or redundantize nucleation processes by direct addition of the nuclei to the cement paste. We have chosen one typical material for each method, nanosilica respectively C-S-H-seeds, to follow and compare their effect on the kinetics of cement hydration and the properties of the hardened cement paste. While nanosilica was found to be a hardening accelerator, C-S-H-seeds accelerate setting and hardening. Furthermore both kinds of nanoparticles result in enhanced mechanical properties of the hardened cement paste.
Nanoparticles as accelerators for cement hydration
Nanoparticles are known to have an Influence on the kinetics of cement hydration. Therefore they have the potential to substitute conventional setting and hardening accelerators and their undesired side effects. There are two different approaches for nanoparticles as accelerators for cement hydration. Either stimulation of the nucleation processes during early cement hydration by nanoparticle addition or redundantize nucleation processes by direct addition of the nuclei to the cement paste. We have chosen one typical material for each method, nanosilica respectively C-S-H-seeds, to follow and compare their effect on the kinetics of cement hydration and the properties of the hardened cement paste. While nanosilica was found to be a hardening accelerator, C-S-H-seeds accelerate setting and hardening. Furthermore both kinds of nanoparticles result in enhanced mechanical properties of the hardened cement paste.
Nanoparticles as accelerators for cement hydration
Land, Gerrit (Autor:in) / Stephan, Dietmar (Autor:in)
2012
7 Seiten, 5 Bilder, 1 Tabelle, 21 Quellen
Aufsatz (Konferenz)
Englisch
Controlling cement hydration with nanoparticles
| Online Contents | 2015
| British Library Online Contents | 2016
| British Library Online Contents | 2016