Corrosion of concrete structures (Part-1) / P. K. Kamani in PAINTINDIA, Vol. LXV, N° 7 (07/2015)  

[article]  inPAINTINDIA > Vol. LXV, N° 7 (07/2015) . - p. 117-121 Titre : Corrosion of concrete structures (Part-1) Type de document : texte imprimé Auteurs : P. K. Kamani, Auteur Année de publication : 2015 Article en page(s) : p. 117-121 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Additifs Anticorrosifs Anticorrosion Béton armé Charbon, Cendres de Corrosion Durée de vie (Ingénierie) Eau Granulats Matériaux cimentaires Matériaux cimentaires -- Détérioration Mélange Index. décimale : 620.13 Matériaux de construction : pierre, ciment, béton, liants de Résumé : Concrete, the most abundant construction material of a structure, is prone to corrosion along with its reinforced steel. There are two basic conditions which degrade concrete : condition during production of concrete and secondly exposure condition during life time. There are number of factors responsible for corrosion on reinforced steel. A normal précaution in adopting the corrosion protection measures in raising a structure along with coating on structure can significantly enhance the life of structures. Note de contenu : - Aggregates - Fly ash - Admixtures - Mixing water - Production and curing of cement - Corrosion mechanism - Durability and deterioration of concrete En ligne : https://drive.google.com/file/d/194VL974YL9MFFM8cG5pEzJS8vdZluqF3/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24479 [article]

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Eco-filler : fly ash / Tripti D. Mane in PAINTINDIA, Vol. LXIV, N° 5 (05/2014)  

[article]  inPAINTINDIA > Vol. LXIV, N° 5 (05/2014) . - p. 61-68 Titre : Eco-filler : fly ash Type de document : texte imprimé Auteurs : Tripti D. Mane, Auteur Année de publication : 2014 Article en page(s) : p. 61-68 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cénosphères Charbon, Cendres de Charges (matériaux) Eco-produits Revêtements -- Additifs:Peinture -- Additifs Index. décimale : 667.9 Revêtements et enduits Résumé : Innovative recycling technology, transforming coal-fired power station fly ash from a waste into valuable eco-mineral fillers and extenders for industrial scale brings a great source of inorganic mineral filler. Fly ash needs to be considered as a "resource", and hence it just can't be "disposed" off but should be "utilised" fruitfully. By using this mineral filler we can cut production costs, increase margins and improve profitability, white simultaneously greening supply chain. Fly ash / Cenospheres can bring a wide range of important benefits through lover energy usage or higher loadings, or as a result of the replacement of more expensive minerals. These benefits depend on the polymer, application and materials currently being used ; whether flexible or rigid, thermoplastic or thermosetting and replaced conventional and man-made inorganic fillers and extenders such as talc, GCC, glass fibres, glass microspheres, barytes, dolomite, clay. Fundamental advantages of using fly ash as filler are being spherical ; relatively hard ; and free flowing. By beneficiation process removal of any residual surface alkali salts results in enhanced performance of fly ash filler in coatings. Note de contenu : - INTRODUCTION : Environmental effect - CLASSIFICATION AND CHEMICAL COMPOSITION - BENEFICIATION : Foth floatation - Magnetic separation - Gravity separation - PROPERTIES OF FA : Physical properties - SURFACE MODIFICATION - APPLICATION OF FA/cenospheres in paints and coatings : High PVC coatings - High solid low VOC coatings - Corrosion resistant coatings - High performance coating - Cool coatings for architectures - Heat insulating coating for metals and woods - Thermal barrier coating for high temperatures furnaces - Fire retardant coatings - Antimicrobial coatings - Conductive coatings - Camouflage paint - Water proof coatings - Latex paint for carpet backing adhesives - Plasma spray coating for Al substrate - Paint spray booth detackification - OTHER INDUSTRIAL APPLICATIONS : Ultramarine blue En ligne : https://drive.google.com/file/d/1ABUBZ0hcXHDbSU3jmun-tlm_G3ixkfWA/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21762 [article]

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Effect of three structurally different epoxy resins on fire resistance, optical transparency, and physicomechanical properties of intumescent fire-retardant transparent coatings / Raj Shree in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 2 (03/2021)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 2 (03/2021) . - p. 535–547 Titre : Effect of three structurally different epoxy resins on fire resistance, optical transparency, and physicomechanical properties of intumescent fire-retardant transparent coatings Type de document : texte imprimé Auteurs : Raj Shree, Auteur ; R. Baloji Naik, Auteur ; Rupesh S. Naik, Auteur ; G. Gunasekaran, Auteur Année de publication : 2021 Article en page(s) : p. 535–547 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation Charbon, Cendres de Composés organiques -- Synthèse Epoxydes Essais de comportement au feu Fourier, Spectroscopie infrarouge à transformée de Gommes et résines Ignifugeants Composé chimique utilisé pour réduire l'inflammabilité. Il peut être incorporé au produit durant sa fabrication ou appliqué ultérieurement à sa surface. Intumescence (chimie) Phosphates Polyphosphorique, Acide Revêtements -- Propriétés mécaniques Revêtements -- Propriétés physiques Revêtements organiques Transparence (optique) Index. décimale : 667.9 Revêtements et enduits Résumé : Transparent intumescent fire-retardant (IFR) coatings are the newest passive fireproofing materials which maintain structural integrity without losing aesthetic appearance of the substrate. In this present paper, effects of three IFR coatings with structurally different epoxy resins, namely aliphatic, cycloaliphatic, and aromatic, on the fire resistance, transparency, and physicomechanical properties were investigated. Different phosphate resin acids (PRA) were prepared by reacting synthesized phosphate ester acid (PEA) with aliphatic, cycloaliphatic, and aromatic epoxy resins. The chemical structures of the above PEA and PRAs were confirmed by Fourier transform infrared spectroscopy (FTIR), 1H-nuclear magnetic resonance spectroscopy (1H-NMR), and 31P-nuclear magnetic resonance spectroscopy (31P-NMR). Subsequently, transparent IFR coatings were prepared by mixing these PRAs with hexamethoxy methyl melamine resin. Transparency of the coatings was confirmed by UV–Vis–NIR spectrophotometeric studies. Fire protection property and char compressive strength were done to investigate the fire protection ability of the coatings, and the quality of the char formed was analyzed by field emission scanning electron microscope. The decomposition process of prepared fire-retardant coatings was studied by thermogravimetric analysis. Results showed that aliphatic epoxy-based transparent coating produced tough and compact char, but the char height was negligible, and aromatic epoxy-based transparent coating produced soft and fluffy char having excellent char height; however, the fluffy char reduced protection for longer duration. Cycloaliphatic epoxy-based transparent coating produced tough and compact char with good char height, thereby reducing heat transfer during combustion, and also showed superior scratch, abrasion, impact, and water resistance compared to other compositions. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of phosphate resin acid (PRA) - Preparation of coating sample - CHARACTERIZATION : Characterization of prepared resins - Characterization of transparent coatings - Characterization of char formed - RESULTS AND DISCUSSION : Thermogravimetric analysis (TGA) - Transparency of coating prepared using PRAs - Physicomechanical properties of transparent IR coatings - Fire resistant test - Characterization of char - Table 1 : Composition and acid value of prepared resins - Table 2 : Physicomechanical performance of all PRAs - Table 3 : Elemental composition of char obtained from the EDAX analysis DOI : https://doi.org/10.1007/s11998-020-00422-4 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00422-4.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35613 [article]

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Kinetics and adsorption isotherms for the removal of tartrazine from aqueous solution by coal ash / M. Ishaq in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 48, N° 2/2011 (03-04/2011)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 48, N° 2/2011 (03-04/2011) . - p. 130-133 Titre : Kinetics and adsorption isotherms for the removal of tartrazine from aqueous solution by coal ash Type de document : texte imprimé Auteurs : M. Ishaq, Auteur ; K. Saeed, Auteur ; S. Nadeem, Auteur Année de publication : 2011 Article en page(s) : p. 130-133 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adsorption Charbon, Cendres de Cinétique chimique Séparation (technologie) Tartrazine Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : The coal ash (Φ) was used as an adsorbent for the removal of tartrazine from aqueous solution at room temperature. The adsorption capacity of tartrazine increased as the adsorption time was increased and then remains constant after 30 min adsorption duration. It was found that the U removed more than 40% of tartrazine from the aqueous solution within 1 h contact time. The equilibrium adsorption was also analyzed by Langmuir isotherm and it was found that the data followed the Langmuir isotherm models. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11121 [article]

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