Variation of microstructure with carbonation in lime and blended pastes

M. Arandigoyen, B. Bicer-Simsir, J. I. Alvarez, D. A. Lange

Research output: Contribution to journalArticle

Abstract

Carbonation, as a reaction of the curing process of both, cement and lime binders, modifies the microstructure. Several microstructure properties, namely porosity, pore size distribution, surface fractal dimension, and specific surface area have been investigated in this study to describe the effect of carbonation on microstructure. Both carbonated and non-carbonated pastes of lime and blended pastes of lime and cement having varying water/binder (W/B) ratios are studied. Results show that carbonation decreases the porosity, but not with the same intensity in all pore size ranges. The highest modification is between 0.03 μm and 0.01 μm in lime pastes and between 0.2 μm and 0.02 μm in 50% lime pastes, while in 80% lime pastes the modification is very small. It is also observed that carbonation is a function of the binder composition but not of the W/B ratio. Moreover, surface fractal dimension decreases during the carbonation process, while the specific surface area varies depending of the binder composition.

Original languageEnglish (US)
Pages (from-to)7562-7571
Number of pages10
JournalApplied Surface Science
Volume252
Issue number20
DOIs
StatePublished - Aug 15 2006

Keywords

  • Blended pastes
  • Carbonation
  • Lime pastes
  • Pore size distribution
  • Surface fractal dimension
  • W/B ratio

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

Fingerprint Dive into the research topics of 'Variation of microstructure with carbonation in lime and blended pastes'. Together they form a unique fingerprint.

  • Cite this