Multi-Scale Structural Assessment of Cellulose Fibres Cement Boards Subjected to High Temperature Treatment
| العنوان: | Multi-Scale Structural Assessment of Cellulose Fibres Cement Boards Subjected to High Temperature Treatment |
|---|---|
| المؤلفون: | Michał Pachnicz, Tomasz Gorzelańczyk, Krzysztof Schabowicz, Adrian Różański |
| المصدر: | Materials, Vol 12, Iss 15, p 2449 (2019) Materials Volume 12 Issue 15 National Information Processing Institute |
| بيانات النشر: | MDPI AG, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | Materials science, cellulose fibre cement boards, nanoindentation, Composite number, microstructure, 0211 other engineering and technologies, Modulus, 02 engineering and technology, Bending, lcsh:Technology, Article, Flexural strength, 021105 building & construction, General Materials Science, Composite material, lcsh:Microscopy, Microscale chemistry, lcsh:QC120-168.85, lcsh:QH201-278.5, lcsh:T, temperature, Nanoindentation, 021001 nanoscience & nanotechnology, Microstructure, Fibre cement, SEM-EDS analysis, lcsh:TA1-2040, lcsh:Descriptive and experimental mechanics, lcsh:Electrical engineering. Electronics. Nuclear engineering, 0210 nano-technology, lcsh:Engineering (General). Civil engineering (General), lcsh:TK1-9971 |
| الوصف: | The methodology of multi-scale structural assessment of the different cellulose fibre cement boards subjected to high temperature treatment was proposed. Two specimens were investigated: Board A (air-dry reference specimen) and Board B (exposed to a temperature of 230 ° C for 3 h). At macroscale all considered samples were subjected to the three-point bending test. Next, two methodologically different microscopic techniques were used to identify evolution (caused by temperature treatment) of geometrical and mechanical morphology of boards. For that purpose, SEM imaging with EDS analysis and nanoindentation tests were utilized. High temperature was found to have a degrading effect on the fibres contained in the boards. Most of the fibres in the board were burnt-out, or melted into the matrix, leaving cavities and grooves which were visible in all of the tested boards. Nanoindentation tests revealed significant changes of mechanical properties caused by high temperature treatment: &ldquo global&rdquo decrease of the stiffness (characterized by nanoindentation modulus) and &ldquo local&rdquo decrease of hardness. The results observed at microscale are in a very good agreement with macroscale behaviour of considered composite. It was shown that it is not sufficient to determine the degree of degradation of fibre-cement boards solely on the basis of bending strength advanced, microscale laboratory techniques can reveal intrinsic structural changes. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 1996-1944 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8c2b56a78bcf86f5c6307d726134858 https://www.mdpi.com/1996-1944/12/15/2449 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....b8c2b56a78bcf86f5c6307d726134858 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19961944 |
|---|