3D SIMULATION OF CEMENT PASTE AGING DUE TO REACTIVE TRANSPORT

Author(s): Neven Ukrainczyk, Eduardus A.B. Koenders
Book Title: RILEM International Symposium on Concrete Modelling - CONMOD 2014
Editor: Kefei Li, Peiyu Yan and Rongwei Yang
ISBN: 978-2-35158-139-1
e-ISBN: 978-2-35158-140-7
Publisher: RILEM Publications SARL
Publication year: 2015
Pages: 305-313
Total Pages: 9
Language: English

Abstract: The relationship between pore structure and transport properties of cementitious materials is a crucial point to run properly in models that couple transport and chemistry. During transport the local microstructure of cement-based material is changing due to the dissolution effect and/or interaction of the diffusing ions with the solid phase. Up to now, the effect of aging on microstructure and evolution of its properties, in three dimensions, was studied only by dissolution of certain phases at random locations. In this paper we present a 3D reactive-transport model and results of leaching-induced aging simulations performed on virtual cementitious microstructures generated by the Hymostruc model. The outputs are the morphology of the aged 3D microstructure together with aged properties characterized by a fuzzy state of each voxel at different times. This allows simulating the evolution of properties as a function of time as well as a function of the location within the microstructure.

Online publication: 2015
Publication Type: full_text
Public price (Euros): 0.00