Analysis of colour change in mineral materials under influence of heat
Authors:
- Izabela Hager
Abstract
This paper presents a testing method for the analysis of colour change in concrete or other mineral material (geopolymer, mortar, stone or aggregates) under the influence of heat. The colour change may be used to reveal the exposure temperature of concrete from which the corresponding fire damage of concrete can be estimated. The colour change observed in concrete is primarily a result of the gradual dehydration of the cement paste, but also of transformations occurring within the aggregate.The colour change was investigated using Scion Image v. 4.0.3, an image analysis software package (Scion Corporation ©, USA). In the proposed method the digital image is split into three RGB colour components: red, green and blue, which are then presented as a histogram using counts of pixel intensity. The histogram results show colour distributions in unheated cementitious material and in material heated to temperatures ranging from 100 to 1000 °C.
- Record ID
- CUT6621f925eb0c455f8019c5b71c203ec8
- Publication type
- Publication categories
- ; ;
- Author
- Other language title versions
- Analiza zmiany koloru w materiałach mineralnych pod wpływem ciepła
- Pages
- 109-117
- Other elements of collation
- il. (w tym kolor.); Bibliografia (na s.) - 117; Bibliografia (liczba pozycji) - 9; Oznaczenie streszczenia - Abstr., Streszcz.
- Book
- Hager Izabela Izabela Hager (eds.): Building materials engineering – new materials and testing methods, 2020, Kraków, Politechnika Krakowska im. Tadeusza Kościuszki, Wydaw. PK, 129 p., ISBN 978-83-66531-54-3
- Keywords in Polish
- kolor, RGB, beton, ogień, wysoka temperatura, skaner
- Keywords in English
- colour, RGB, concrete, fire, high temperature, flatbed scanner
- Related project
- [N N506 045040] Wieloparametrowa diagnostyka stanu betonów cementowych poddanych działaniu temperatur pożarowych. . Project leader at PK: , ,
- Language
- eng (en) English
- Score (nominal)
- 20
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT6621f925eb0c455f8019c5b71c203ec8/
- URN
urn:pkr-prod:CUT6621f925eb0c455f8019c5b71c203ec8
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