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Cement-based coatings for the protection of concrete and ferrous metals / P. Bennison in SURFACE COATINGS INTERNATIONAL, Vol. 80, N° 3 (03/1997)
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Titre : Cement-based coatings for the protection of concrete and ferrous metals Type de document : texte imprimé Auteurs : P. Bennison, Auteur Année de publication : 1997 Article en page(s) : p. 116-120 Langues : Anglais (eng) Tags : 'Revêtement protecteur' Ciment Béton Métal 'Etude expérimentale' Durabilité Porosité Perméabilité 'Composition matériau' 'Résistance mécanique' 'Rapport eau ciment' Hydrate Polymère Index. décimale : 667.9 Revêtements et enduits Résumé : The ability of cement-based coatings to prevent corrosion is based on their high alkalinity of pH 12.5-13.0, which protects the steel from corrosion owing to the formation of a passive film of gamma Ferric oxide. This passive film is stabilised by the high concentrarion of hydroxyl ions in the pore electrolyte of the material which effectively stifles tha anodic dissolution of Ferrous ions so that the corrosion rate remains negligible. the high density and impermeability of the matrix protects the steel from water, oxygen, and chlorides. Note de contenu : - Durability of cement based products
- Porosity and permeability
- Materials which influence porosity and permeability in cement pastes
- Pozzolanic materials
- Polymer-modified cement-based materials
- Cement/pozzolanic modified materials
- Cement-bound protective coatings
- Typical mechanical characteristics of cement-bound coatingsPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17154
in SURFACE COATINGS INTERNATIONAL > Vol. 80, N° 3 (03/1997) . - p. 116-120[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 006580 - Périodique Bibliothèque principale Documentaires Disponible Development of a novel oxidative hair color based on a system with an optimized ratio of higher alcohol to cationic surfactant / Takahiro Yamashita in IFSCC MAGAZINE, Vol. 8, N° 3 (07-08-09/2005)
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Titre : Development of a novel oxidative hair color based on a system with an optimized ratio of higher alcohol to cationic surfactant Type de document : texte imprimé Auteurs : Takahiro Yamashita, Auteur ; Masatoshi Ochiai, Auteur ; Kazuya Shibata, Auteur ; Masaaki Yasuda, Auteur ; Akira Noda, Auteur Année de publication : 2005 Article en page(s) : p.163-169 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents de blanchiment
Cheveux -- Teinture
SurfactantsTags : 'Couleur oxydante des cheveux' 'Agent de blanchiment' 'Rapport molaire' 'Surfactant cationique' Index. décimale : 668.5 Parfums et cosmétiques Résumé : Oxidative hair color, the most commonly used for coloring hair, is characterized by its bleaching effect. This effect enables dark hair to be dyed in various bright colors. In order to enhance this bleaching effect, the concentration of either the alkalizing or oxidizing agent in the hair color base is generally increased. However, this method causes chemical damage to the hair. With the aim of finding methods to obtain an improved bleaching effect without increasing the amount of bleaching ingredients, the authors investigated the permeation mechanism. Cationic bases showed the highest bleaching effect and allowed greater penetration, permitting bleaching ingredients to enter the cortex of the hair more easily and diffuse more quickly. In addition, the molar ratios of higher alcohol (A) to cationic surfactant (C) as a function of the bleaching effect were also evaluated. The results showed an optimum range for this A/C ratio. The smoothness of the hair was also evaluated, revealing an optimum range for the A/C ratio. Based on these findings, a product with an A/C ratio that maximizes the bleaching effect and the smoothness of the hair was successfully developed. Comparison of this newly developed product with a conventional product verified that the new product has a greater bleaching effect and gives a beautiful depth of color while maintaining the silky smoothness of the texture of the hair. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10489
in IFSCC MAGAZINE > Vol. 8, N° 3 (07-08-09/2005) . - p.163-169[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 003888 - Périodique Bibliothèque principale Documentaires Disponible