A simulation model for microstructure of portland cement paste at high temperature

Title: A simulation model for microstructure of portland cement paste at high temperature
Author(s): Qi Zhang, G. Ye, E.A.B. Koenders
Paper category : conference
Book title: 2nd International RILEM Workshop on Concrete Spalling due to Fire Exposure
Editor(s): E.A.B. Koenders and F. Dehn
ISBN: 978-2-35158-118-6
e-ISBN: 978-2-35158-119-3
Publisher: RILEM Publications SARL
Publication year: 2011
Pages: 361 - 368
Total Pages: 8
Nb references: 8
Language: English

Abstract: At high temperature, the hydration products in Portland cement paste dehydrate gradually. As a result of this degradation process, the material properties change, initiating micro-cracks and affecting the tensile strength of the material. The rearrangement of the material, induced by dehydration, affects the transport properties of the material, which, on its turn, influences the boiling process in the internal pore structure. In this study, a simulation model for microstructure change of heated Portland cement paste was proposed. The chemical reaction, volume change of calcium-silicate-hydrate (CSH) and microstructure response were discussed respectively.

Online publication: 2012-01-17
Publication type : full_text
Public price (Euros): 0.00