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Characterization of the development of microstructure and porosity of cement-based materials by numerical simulation and ESEM image analysis



Title: Characterization of the development of microstructure and porosity of cement-based materials by numerical simulation and ESEM image analysis
Author(s): G. Ye, J. Hu, K. van Breugel, P. Stroeven
Paper category : journal
Serial title: Concrete Science and Engineering
Abreviated Serial title: Concr. Sc. Eng.
ISSN: 1295-2826
Publisher: RILEM Publications SARL
Volume: 4
Issue: 16
Issue date: 2002-12-01
Publication year: 2002
Pages: 603 - 613
Total Pages: 11
Nb references: 20
Language: English


Abstract: This paper describes the characterization of the devel-
opment of the microstructure and porosity of cement-
based materials simulated with a numerical model and
compares the results with those obtained from environ-
ment 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 algo-
rithm 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: 2002-10-30
Classification: Scientific Reports
Publication type : full_text
Public price (Euros): 0.00