Contribution to the modeling of hydration and chemical shrinkage of slag-blended cement at early age
| Autor: | Pierre Mounanga, Nour El Houda Khalifa, Tarek Merzouki, Marwen Bouasker |
|---|---|
| Přispěvatelé: | Laboratoire pluridisciplinaire de recherche en ingénierie des systèmes, mécanique et énergétique (PRISME), Université d'Orléans (UO)-Institut National des Sciences Appliquées - Centre Val de Loire (INSA CVL), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Centre de Recherche sur la Matière Divisée (CRMD), Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO), Laboratoire de Recherche structure et de Mécanique Appliquée (LASMAP), Ecole Polytechnique de Tunisie, Institut de Recherche en Génie Civil et Mécanique (GeM), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-École Centrale de Nantes (ECN)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Materials science
Early-age Fineness 0211 other engineering and technologies Cement Hydration 02 engineering and technology engineering.material Heat of hydration Portlandite law.invention law Blast furnace slag 021105 building & construction General Materials Science Chemical shrinkage Composite material Civil and Structural Engineering Shrinkage Modeling Slag Building and Construction 021001 nanoscience & nanotechnology Portland cement Ground granulated blast-furnace slag [SPI.MECA.STRU]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Structural mechanics [physics.class-ph] visual_art engineering visual_art.visual_art_medium Cementitious 0210 nano-technology |
| Zdroj: | Construction and Building Materials Construction and Building Materials, Elsevier, 2013, 44, pp.368-380. ⟨10.1016/j.conbuildmat.2013.02.022⟩ |
| ISSN: | 0950-0618 |
| DOI: | 10.1016/j.conbuildmat.2013.02.022⟩ |
| Popis: | International audience; This paper presents a contribution to the modeling of the chemical shrinkage of the slag-blended cement paste (binder) at early age. Assuming that the chemical shrinkage is a direct result of hydration, the hydration modeling of slag-blended cement was studied by considering the interaction between the hydrations of blast furnace slag (BFS) and ordinary Portland cement. The reaction of BFS in the presence of calcium hydroxide CH (Portlandite) produced from the hydration of the cement was investigated. The kinetic hydration of cement was developed, and the volume phases in the cementitious material during the hydration process were calculated. The chemical shrinkage, which is the negative volume balance between the reactants and the products formed, is then calculated. In parallel with this numerical modeling, an experimental study was conducted to investigate the effect of slag’s addition (0%, 30%, 50% and 80%) on the heat of hydration and chemical shrinkage at early age (maturation up to 7 days). The proposed hydration model incorporates the effect of following variables; the chemical composition of the binder, the fineness, the water to binder ratio (w/b), the curing time and the temperature. |
| Databáze: | OpenAIRE |
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