ITEM METADATA RECORD
Title: Microstructural analysis of paste and interfacial transition zone in cement mortars modified with water-soluble polymers
Authors: Knapen, Elke ×
Van Gemert, Dionys #
Issue Date: 2011
Publisher: Trans Tech Publications
Series Title: Key Engineering Materials vol:466 pages:21-28
Abstract: The presence of water-soluble polymers affects the interfacial transition zone (ITZ) in polymer-modified cement mortar. Such effects are studied by means of SEM-investigation. Polyvinyl alcohol-acetate (PVAA), Methylcellulose (MC) and Hydroxyethylcellulose (HEC) are applied in a 1 % polymer-cement ratio. The polymers provide an improved dispersion of the cement particles in the mixing water. The tendency of certain water-soluble polymers to retard the flocculation of the cement particles minimizes the formation of a water-rich layer around the aggregate surfaces. They also provide a more uniform distribution of unhydrated cement particles in the matrix, without significant depletion near aggregate surfaces. Both effects enable to reduce the ITZ. The polymers provide a more cohesive microstructure, with a reduced amount of microcracks in the interfacial transition zones.
ISSN: 1013-9826
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Department of Civil Engineering - miscellaneous
× corresponding author
# (joint) last author

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