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Chloride migration coefficient of self-compacting concrete

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Abstract

In this article laboratory and analytical studies of the chloride migration coefficient, D, are presented. The result of studies on chloride migration of Self-Compacting Concrete, SCC, are compared with the corresponding properties of normal concrete with the same water-cement ratio, w/c and air content. Both 28 and 90 days' age applied at the start of the testing. Six SCC were studied and 2 NC, all with w/c=0.39. The effect of normal and reversed order of mixing (filler last), increased amount of filler, type of filler, limestone powder, increased air content and large hydrostatic concrete pressure were investigated.

Résumé

Cet article traite des études en laboratoire et des analyses concernant le coefficient de migration du chlorure. Le résultat des études sur l'admission en chlorure du béton autocompactant a été comparé avec les propriétés de celles d'un béton courant ayant le même taux d'eau/ciment et la même teneur en air. Des bétons de 28 et de 90 jours ont été utilisés au début des tests. L'étude a porté sur 6 bétons auto-compactants et 2 bétons normaux, tous ayant un taux d'eau/ciment de 0,39. C'est dans ce contexte qu'a été étudiée l'influence d'un mélange normal et inversé (dernier apport), de l'augmentation de la quantité de matériau de remplissage, du type de matériau de remplissage, de la poudre de pierre à chaux, de l'augmentation de la teneur en air et d'une forte compression hydrostatique du béton.

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Authors and Affiliations

  1. Lund Institute of Technology, P O Box 118, 22100, Lund, Sweden

    B. Persson

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  1. B. Persson
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Editorial Note Dr. Bertil Persson is a RILEM Senior Member. He participates in RILEM TCs LTP' Life time performance of materials and structures’, URM ‘Use of recycled materials’, 196-ICC ‘Internal curing of concretes’ and 195-DTD ‘Recommendation for test methods for autogenous deformation and thermal dilation of early age concrete’.

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Persson, B. Chloride migration coefficient of self-compacting concrete. Mat. Struct. 37, 82–91 (2004). https://doi.org/10.1007/BF02486603

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