Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Temperature-Dependent Behavior of Mature Cement Paste: Creep Testing and Multiscale Modeling
https://orcid.org/http://orcid.org/0000-0002-5699-4492
https://orcid.org/http://orcid.org/0000-0003-1445-206X
https://orcid.org/http://orcid.org/0000-0002-1153-9875
https://orcid.org/http://orcid.org/0000-0003-0153-4859
https://orcid.org/http://orcid.org/0000-0002-6468-1840
The elastic compliance of cementitious materials increases slightly, and their time-dependent “creep” compliance increases significantly with increasing temperature. The present contribution provides quantitative insight into this topic. Thereby, the focus rests on mature cement paste made from Ordinary Portland cement and distilled water. Macroscopic creep experiments were performed, in order to quantify both elastic and creep moduli in the range of temperatures from 20 ℃ to 45 ℃. The experimental results regarding temperature-dependent values of the modulus of elasticity are validated herein using original results from ultrasonics testing. Finally, a multiscale model was used to establish a link to well-known stiffness constants of unhydrated cement clinker, as well as to temperature-dependent elastic and creep stiffness properties of nanoscopic hydrate-gel needles.
Temperature-Dependent Behavior of Mature Cement Paste: Creep Testing and Multiscale Modeling
https://orcid.org/http://orcid.org/0000-0002-5699-4492
https://orcid.org/http://orcid.org/0000-0003-1445-206X
https://orcid.org/http://orcid.org/0000-0002-1153-9875
https://orcid.org/http://orcid.org/0000-0003-0153-4859
https://orcid.org/http://orcid.org/0000-0002-6468-1840
The elastic compliance of cementitious materials increases slightly, and their time-dependent “creep” compliance increases significantly with increasing temperature. The present contribution provides quantitative insight into this topic. Thereby, the focus rests on mature cement paste made from Ordinary Portland cement and distilled water. Macroscopic creep experiments were performed, in order to quantify both elastic and creep moduli in the range of temperatures from 20 ℃ to 45 ℃. The experimental results regarding temperature-dependent values of the modulus of elasticity are validated herein using original results from ultrasonics testing. Finally, a multiscale model was used to establish a link to well-known stiffness constants of unhydrated cement clinker, as well as to temperature-dependent elastic and creep stiffness properties of nanoscopic hydrate-gel needles.
Temperature-Dependent Behavior of Mature Cement Paste: Creep Testing and Multiscale Modeling
https://orcid.org/http://orcid.org/0000-0002-5699-4492
https://orcid.org/http://orcid.org/0000-0003-1445-206X
https://orcid.org/http://orcid.org/0000-0002-1153-9875
https://orcid.org/http://orcid.org/0000-0003-0153-4859
https://orcid.org/http://orcid.org/0000-0002-6468-1840
The elastic compliance of cementitious materials increases slightly, and their time-dependent “creep” compliance increases significantly with increasing temperature. The present contribution provides quantitative insight into this topic. Thereby, the focus rests on mature cement paste made from Ordinary Portland cement and distilled water. Macroscopic creep experiments were performed, in order to quantify both elastic and creep moduli in the range of temperatures from 20 ℃ to 45 ℃. The experimental results regarding temperature-dependent values of the modulus of elasticity are validated herein using original results from ultrasonics testing. Finally, a multiscale model was used to establish a link to well-known stiffness constants of unhydrated cement clinker, as well as to temperature-dependent elastic and creep stiffness properties of nanoscopic hydrate-gel needles.
Temperature-Dependent Behavior of Mature Cement Paste: Creep Testing and Multiscale Modeling
RILEM Bookseries
Jędrzejewska, Agnieszka (Herausgeber:in) / Kanavaris, Fragkoulis (Herausgeber:in) / Azenha, Miguel (Herausgeber:in) / Benboudjema, Farid (Herausgeber:in) / Schlicke, Dirk (Herausgeber:in) / Binder, Eva (Autor:in) / Königsberger, Markus (Autor:in) / Flores, Rodrigo Díaz (Autor:in) / Mang, Herbert A. (Autor:in) / Hellmich, Christian (Autor:in)
International RILEM Conference on Synergising expertise towards sustainability and robustness of CBMs and concrete structures ; 2023 ; Milos Island, Greece
11.06.2023
10 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Moisture permeability of mature concrete, cement mortar and cement paste
| BASE | 1993
Moisture Permeability of Mature Concrete and Cement Paste
| British Library Conference Proceedings | 1995
Creep of Portland cement paste at sub-zero temperature
| Online Contents | 1971