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Inspection of field-applied, thin-film intumescent paint / Troy E. Fraebel in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 34, N° 12 (12/2017)  

[article]  inJOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL) > Vol. 34, N° 12 (12/2017) . - p. 13-16 Titre : Inspection of field-applied, thin-film intumescent paint Type de document : texte imprimé Auteurs : Troy E. Fraebel, Auteur Année de publication : 2018 Article en page(s) : p. 13-16 Langues : Américain (ame) Catégories : Acier L'acier est un alliage métallique utilisé dans les domaines de la construction métallique et de la construction mécanique. L'acier est constitué d'au moins deux éléments, le fer, très majoritaire, et le carbone, dans des proportions comprises entre 0,02 % et 2 % en masse1. C'est essentiellement la teneur en carbone qui confère à l'alliage les propriétés du métal qu'on appelle "acier". Il existe d’autres métaux à base de fer qui ne sont pas des aciers comme les fontes et les ferronickels par exemple. Contrôle technique Intumescence (chimie) Métaux -- Revêtements protecteurs Revêtements:Peinture Index. décimale : 667.9 Revêtements et enduits Résumé : While a thin-film intumescent fire-resistive material (TFIFRM) applies like paint, this coating type provides much more than corrosion protection and aesthetics. It is critical to the safety of human life and the preservation of structures. TFIFRMs are designed to protect structural steel in the event of a fire. Carbon steel starts to lose its strength at approximately 752 F (400 C) and will lose half of its strength at approximately 1,112 F (600 C). Intumescent materials react to the heat of a fire by swelling and expanding to form a char that insulates the steel. This slowing of heat transfer extends the time before the steel reaches its critical failure temperature, allowing occupants to evacuate the building and firefighters to arrive and save the structure before it fails. This protection can also be afforded by thick-film concrete or cementitious fireproofing materials or other methods, but "thin-film" IFRMs are much more aesthetically pleasing and can look just like thin paint when properly applied. The dry-film thickness (DFT) of TFIFRMs is well beyond the normal thickness of paint — a quarter of an inch or more. Note de contenu : - Substrate conditions - Temperature - Humidity - Ventilation - Weather protection - Wet-film thicknesses (WFT) measurement - Thickness determination : Verification - Adjustment - Thickness measurement - Thickness maximum - Thickness minimum - Failure - Thickness masurement averating - Testing frequence - Test for beams, trusses and columns : Beams - Test report - Visual inspection En ligne : http://www.paintsquare.com/archive/?fuseaction=view&articleid=6216 Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30358 [article]

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The missing piece / Chrissy Stewart in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 34, N° 12 (12/2017)  

[article]  inJOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL) > Vol. 34, N° 12 (12/2017) . - p. 19-24 Titre : The missing piece : Collaborations between field investigators and laboratory chemists Type de document : texte imprimé Auteurs : Chrissy Stewart, Auteur Année de publication : 2018 Article en page(s) : p. 19-24 Langues : Américain (ame) Catégories : Analyse des défaillances (fiabilité) Cloquage (défauts) Délaminage Expertises Revêtements -- Défauts:Peinture -- Défauts Index. décimale : 667.9 Revêtements et enduits Résumé : Coating failure analysis draws many parallels to these shows. In fact, you can almost envision it: a camera pans over a work site, dramatic music plays as a water tank is being drained. The manway slowly swings open to reveal massive and extensive blistering of the newly applied interior coating system. The owner frantically calls to report the dire situation he has just discovered. Cut to opening credits. The most dramatic moment of the show is usually when some small detail that had been previously overlooked is discovered. The breakthrough can come from the investigator, the laboratory, even someone with minimal involvement in the case — a taxi driver, or a neighbor with a different perspective of what all the information means. This can often be said for coating failure investigations as well. The key to solving these cases is to combine all of the knowledge gained during the investigation and let the data tell the story. The type of information that can be obtained from the field investigation is much different than the data produced by the lab. The field investigation gives the investigator the opportunity to make observations on and around the structure, observe for coating failure patterns, test adhesion to the substrate, inspect the surface profile, sift through paint cans, interview individuals on-site — simply, the field investigator takes a more hands-on approach. The laboratory investigation gives the added benefit of examining coating samples from the field using sophisticated analytical techniques to gain information that would not be readily obtained without the proper instrumentation. Two different scenarios will be described, one a laboratory investigation without the benefit of direct field knowledge and one that combines both field and lab investigations. Note de contenu : - SCENARIO #1 : Coating delamination in scrubber tower : Laboratory investigation - FAILURE SCENARIO #2 : BLISTERING ON BRIDGE RAILINGS : Field and laboratory investigations - FIGURES : 1. Glossy top surface of red primer - 2. Cross-section of gray topcoat separated from red primer - 3. Uneven appearance of red primer - 4. Blistered area prior to scraping - Fig. 5 : Blistered area after scraping to reveal a red layer beneath the gray - 6. Cross-section of blister cap En ligne : http://www.paintsquare.com/archive/?fuseaction=view&articleid=6215 Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30359 [article]

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Hubble bubble rising / Vijay Datta in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 34, N° 12 (12/2017)  

[article]  inJOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL) > Vol. 34, N° 12 (12/2017) . - p. 26-35 Titre : Hubble bubble rising : A new beginning, the better way Type de document : texte imprimé Auteurs : Vijay Datta, Auteur ; Carl Reed, Auteur ; Mike O'Donoghue, Auteur Année de publication : 2018 Article en page(s) : p. 26-35 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Analyse des défaillances (fiabilité) Anticorrosion Cloquage (défauts) Délaminage Essais (technologie) Essais accélérés (technologie) Essais d'adhésion Essais de résilience Revêtements protecteurs Spécifications Test d'immersion Index. décimale : 667.9 Revêtements et enduits Résumé : This article examines the flaws of the current system of establishing and using specifications and testing. Because these flaws are so odious, a “better way” will be proposed in order to provide the end user real value in the use of protective coatings. Three tests will be discussed as illustrative examples of the flaws in the current system of using specifications and testing. These three tests are accelerated corrosion testing, pull-off adhesion testing, and constant stress, chemical immersion testing. Notwithstanding, this monograph will show how these tests, as examples of testing in general, can be used in a manner that provides the end user real value. Note de contenu : - It all begins with the specification : Conventional wisdom specifications - Hand-me-down specifications - Common-use specifications - Relevance : Either you have it or you don't - Through all the arbitrary rationale - Test data and the law of unintended consequences - WAC-KY expectations, WAC-KY testing, WAC-KY specifications - Not even close to the mark - We've got to get together sooner or later because the revolution's here and you know it's right - Fig. 1. Passing and non-passing scribe test results - Fig. 2. Example of cathodic delamination - Fig. 3. Pull-off adhesion showing at least three different loci of failure - Fig. 4. Blistering failure from a WAC vessel En ligne : http://www.paintsquare.com/archive/?fuseaction=view&articleid=6210 Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30360 [article]

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Inhalation hazards associated with abrasive blasting / Thomas Enger in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 34, N° 12 (12/2017)  

[article]  inJOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL) > Vol. 34, N° 12 (12/2017) . - p. 36-40 Titre : Inhalation hazards associated with abrasive blasting Type de document : texte imprimé Auteurs : Thomas Enger, Auteur Année de publication : 2018 Article en page(s) : p. 36-40 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Equipement de protection individuelle Equipements de protection respiratoire Inhalation Produits chimiques Risques pour la santé Substances dangereuses Surfaces -- Nettoyage Traitement de surface par impact Index. décimale : 667.9 Revêtements et enduits Résumé : This article explores the inhalation hazards associated with the blast media, substrate, and coating used and treated in abrasive blasting from multiple aspects including inhalation hazards from the treated surface (paint, epoxy, heavy metals), hazards from abrasives (sand, coal slag, steel grit, garnet, crushed glass, organics and polymers) and hazards from breathing air (carbon monoxide, oil, odors and mist). Note de contenu : - INHALATION HAZARDS FROM TREATED SURFACES : Base surfaces - Protective coatings and surface contaminants - INHALLATION HAZARDS FROM ABRASIVES - INHALATION HAZARDS FROM BREATHING AIR : OSHA requirements for NIOSH-approved supplied-air respirators - Table 1. Base surface inhalation hazards - Table 2. Abrasive inhalation hazards - Table 3. Respirator types and properties En ligne : http://www.paintsquare.com/archive/?fuseaction=view&articleid=6211 Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30361 [article]

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Moving beyond the 25-year coating / Todd Williams in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 34, N° 12 (12/2017)  

[article]  inJOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL) > Vol. 34, N° 12 (12/2017) . - p. 42-53 Titre : Moving beyond the 25-year coating Type de document : texte imprimé Auteurs : Todd Williams, Auteur ; Ahren Olson, Auteur ; Paul Vinik, Auteur Année de publication : 2018 Article en page(s) : p. 42-53 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion Composés inorganiques Composés organiques Corrosion Essais accélérés (technologie) Essais de résilience Primaire (revêtement) Revêtements -- Finition:Peinture -- Finition Revêtements multicouches Zinc Index. décimale : 667.9 Revêtements et enduits Résumé : Zinc-rich primers have been well studied, yet specifying inorganic (IOZ) or organic zinc (OZ) for three-coat systems remains a highly debated topic. During the 1960s and 1970s inorganic zincs became the dominant primer in North America and published literature shows IOZ outperforming OZ in three-coat systems. The study presented in this article focuses on evaluating two variables within the traditional ZEU system that could impact performance — zinc-rich primer type (i.e., inorganic or organic) and topcoat chemistry. Note de contenu : - Adhesion - Accelerated corrosion testing - Natural corrosion testing - Accelerating weathering - Natural weathering - TABLES : 1. Description of coatings applied and evaluated in study - 2. Average dry-film thickness of each coat of three-coat systems - 3. NEPCOAT Coating Performance Requirements - FIGURES : 1. Panels attached to a rack at the natural weathering site in the Florida Keys. The rack is facing south and panels are exposed at a 45 degree angle from vertical - 2. Tensile adhesion results ; asterisk denotes glue-to-topcoat failure - 3. Scribe creep data after 5,000 hours of B117 exposure - 4. Data from 5,040 hours of D5894 testing - 5. Blistering of Coatings After 4,032 Hours Cyclic Prohesion (ASTM D5894) - 6. Panels after 54 months of exposure at Tea Table Key - 7. QUV-A data after 5,000 hours of exposure per ASTM 4587 cycle 2 - 8. Color retention data after 5,000 hours of exposure per ASTM D4587 cycle 2 - 9. Gloss retention in natural weathering after 54 months of exposure at Tea Table Key - 10. Color retention in natural weathering after 54 months of exposure at Tea Table Key En ligne : http://www.paintsquare.com/archive/?fuseaction=view&articleid=6209 Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30362 [article]

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Journal of Protective Coatings and Linings Vol. 34, N° 12 URL