[article]
| Titre : |
High build elastomeric coatings : A novel approach to long term concrete protection |
| Type de document : |
texte imprimé |
| Auteurs : |
J. K. Sharma, Auteur |
| Année de publication : |
1997 |
| Article en page(s) : |
p. 33-42 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Elastomères
Formulation (Génie chimique)
Liants
Matériaux cimentaires -- Revêtements protecteurs
Matériaux cimentaires -- Revêtements:Matériaux cimentaires -- Peinture
Pigments
Polymères
Revêtements (produits chimiques):Peinture (produits chimiques)
Revêtements -- Additifs:Peinture -- Additifs
Revêtements -- Propriétés mécaniques:Peinture -- Propriétés mécaniques
Revêtements en bâtiment:Peinture en bâtiment
solvants
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Concrete is the most widely used and versatile construction material in the world. The conventional coatings fails in protecting concrete structures, because they are only capable of accommodating substrate movement associated with normal thermal conditions. They cannot withstand crack development, cyclic crack opening and extremes of temperature conditions. The result is that, such coating cracks and loses its protective power. Once air and acid containing moisture has access to exposed reinforcement bar, considerable damage could occur in leading to concrete deterioration. This paper will focus on an important class of coatings High Build Elastomeric Coatings capable of answering all such substrate movements over long periad of time and over a broad range cf temperatures, thereby providing total concrete protection. Such coatings are described in details over here w. r. t. specific performance requirements, formulations, processing technique, surface preparation and application methods. |
| Note de contenu : |
- PROTECTIVE COATING REQUIREMENTS
- DEVELOPMENT OF A PROTECTIVE HIGH BUILD ELASTOMERIC COATING SYSTEM : Glass transition curve (Refer Graph No. I) - Elastic modulus v/s temperature (Refer Graph No. II)
- RESIN SYSTEMS IN ELASTOMERIC COATINGS : Elongation at various temperatures (Refer Graph No. III) - Crack-bridging ability - Substrate (concrete) cracking after application of elastomeric coatings - Water vapour diffusion rate (breathing) or permeability - Anticarbonation propertu or carbon dioxide diffusion resistance - Dirt pick up resistance - Ultra violet radiation resistance - Water resistance - Two pack-polyester/polyisocyanate system - Two pack-polyether/polyisocyanate system - One pack-moisture cured urethane system - Crosslinked, 100% internally plasticised acrylic emulsions - Use of low Tg polymers, prepolymers or oligomers with UV surface chemistry
- PIGMENTATION IN ELASTOMERIC COATINGS : Pigment surface area - Pigments shape - Pigment volume concentration
- ADDITIVES IN ELASTOMERIC COATINGS
- SOLVENTS IN ELASTOMERIC COATINGS : Formulation and processing aspects of high build elastomeric coatings - Performance testing for elastomeric concrete coatings - Surface preparation - Application methods |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13322 |
in PAINTINDIA > Vol. XLVII, N° 10 (10/1997) . - p. 33-42
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