Thermogravimetric analysis of the surface coatings of steel constructions

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27200%2F20%3A10246178" target="_blank" >RIV/61989100:27200/20:10246178 - isvavai.cz</a>

Result on the web

<a href="https://search.proquest.com/docview/2475948441/fulltextPDF/16397E3CEC254AA7PQ/1?accountid=26990" target="_blank" >https://search.proquest.com/docview/2475948441/fulltextPDF/16397E3CEC254AA7PQ/1?accountid=26990</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5593/sgem2020/5.1/s20.106" target="_blank" >10.5593/sgem2020/5.1/s20.106</a>

Result language

angličtina

Original language name

Thermogravimetric analysis of the surface coatings of steel constructions

Original language description

Steel structures and their elements are currently used for their properties. The advantage is for example their low weight compared to their load-bearing capacity, but also their quick assembly. However, their properties may change under thermal loading. There is no significant drop in properties up to 350 oC, but in the range of 500 - 700 oC, steel nearly loses its load-bearing capacity (Macek, 2003; ČSN 73 0810). In many cases, these structures are treated with the fire resistance coatings. These coatings increase steel construction&apos;s resistance to the effects of heat. Lucherini (2018) and his team made experimental study with thin intumescent coatings. They monitored the onset of the coating&apos;s reaction as a function of temperature. Often, the steel structures are treated only with an anticorrosive coating. Anticorrosive coatings protect the structures against the adverse effects of their environments. Mensinger and Gaigl (2016, 2017) tested anticorrosive coatings as a fire resistance coating. In this case, hot-dip galvanized steel elements were exposed to heat flow and tested. Their results showed better behavior of hot-dip galvanized steel elements compared to untreated or rust-coated elements. In experimental measurements steel sheets were treated by selected surface treatments according to the manufacturer&apos;s instructions. Several types of coatings were used in the black and white shade. Treated steel sheets were exposed to different sizes of thermal radiation for 30 minutes. Effects of thermal load of radiation component on selected anticorrosive coatings and steel structures were monitored and evaluated. The visual damage and compactness of the paint layer were evaluated. The results showed different resistance of individual color samples as well as different temperatures that were recorded on the nonexposed side of the steel sheet (Jankůj at al 2019). For comprehensive evaluation of resistance of individual coatings, their samples were prepared and after that subjected to thermal analysis. Thermal analysis is used to monitor the processes that occur during heating or cooling a sample of interest (oxidation, dehydration or others). Thermal analysis is a set of methods that monitor changes in weight, release, or consumption of heat, and also other things such as volume changes or gas evolution or absorption (Kloužková, 2012). Within the thermogravimetric analysis weight loss was monitored as a function of time and temperature and also differential scanning calorimetry analysis was monitored. These analysis on a TGA/DSC2 instrument from Mettler Toledo were performed. The results confirmed the greatest resistance of Hempathane color, which also showed the visual greatest compactness and resistance during thermal stress. Depending on the extent of the damage, the thermal stress level of steel structures could be assessed in practice.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20506 - Coating and films

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

20th International Multidisciplinary Scientific GeoConference : SGEM 2020 : conference proceedings : 18-24 August, 2020, Albena, Bulgaria. Issue 6.1

ISBN

978-619-7603-12-5

ISSN

1314-2704

e-ISSN

—

Number of pages

8

Pages from-to

841-848

Publisher name

STEF92 Technology Ltd.

Place of publication

Sofia

Event location

Albena

Event date

Aug 18, 2020

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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