Rationalizing the impact of aging on fiber–matrix interface and stability of cement-based composites submitted to carbonation at early ages

The objective of this work is to show the effect of carbonation at early stages on fiber–cement composites and impact on hydration, chemical and dimension stability. Carbonation increased the content of CaCO 3 polymorphs and consumed Ca(OH) 2 and other hydrated calcium phases. Micrographs and energy...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials science 2016-09, Vol.51 (17), p.7929-7943
Main Authors: Tonoli, G. H. D., Pizzol, V. D., Urrea, G., Santos, S. F., Mendes, L. M., Santos, V., John, V. M., Frías, M., Savastano, H.
Format: Article
Language:English
Subjects:
Aluminum
Calcium carbonate
Carbonates
Carbonation
Cement
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Composite materials
Crystallography and Scattering Methods
Fiber-matrix interfaces
Hydration
Interface stability
Materials Science
Organic chemistry
Original Paper
Photomicrographs
Polymer Sciences
Porosity
Shrinkage
Silicon
Slaked lime
Solid Mechanics
Stability
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The objective of this work is to show the effect of carbonation at early stages on fiber–cement composites and impact on hydration, chemical and dimension stability. Carbonation increased the content of CaCO 3 polymorphs and consumed Ca(OH) 2 and other hydrated calcium phases. Micrographs and energy-dispersive spectrometry showed the CaCO 3 formed is precipitated in the pore structure of the matrix, decreasing diffusion of Si, S, and Al during hydration. Therefore, a refining process of pore sizes is produced, and fiber–matrix interface in carbonated composites was improved, leading to volume stabilization of the composite, as indicated by lower drying shrinkage and lower porosity.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-016-0060-z