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Predicting the performance of concrete structures exposed to aggressive chemical environments - Field validation



Title: Predicting the performance of concrete structures exposed to aggressive chemical environments - Field validation
Author(s): J. Marchand, E. Samson, Y. Maltais, R. J. Lee, S. Sahu
Paper category : journal
Serial title: Materials and Structures
Abreviated Serial title: Mater. Struct.
ISSN: 1359-5997
Publisher: RILEM Publications SARL
Volume: 35
Issue: 254
Issue date: 2002-12-01
Publication year: 2002
Pages: 623 - 631
Total Pages: 9
Nb references: 22
Language: English


Abstract: This paper describes the characterization of the development of the microstructure and porosity of cementbased materials simulated with a numerical model and compares the results with those obtained from environment scanning electron microscopy (ESEM)images.
The numerical cement hydration model HYMOSTRUC is used to simulate the 3D microstructure of cement paste.
The geometrical and topological properties of porous media are derived by applying a serial sectioning algorithm with an overlapping criterion.
The stereological estimation of ESEM image is used to characterize the morphological changes of microstructure during the cement hydration process.
The characteristic parameters simulated by the model and obtained from experiments are compared to one another.
The influence of different w/c ratios,i.
e.
from 0.
3 to 0.
6,different finenesses of cement particles,210 m(2)/kg, 420 m(2)/kg and 600 m(2)/kg, and different lengths of curing period are investigated.
The potential application of this simulated 3D microstructure on the transport properties being studied by applying a network permeability model.
The capillary transport is considered in this model.


Online publication: 2002-10-27
Classification: Scientific Reports
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/13933


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