Ecological Restoration Plasters and Mineral Pigments Designed with Raw Material from the Island of Gavdos
| Autor: | Fotiou Afroditi, Oiry Claire, Kapetanaki Kali, Perdikatsis Vasilis, Kallithrakas-Kontos Nikolaos, Maravelaki Pagona |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0211 other engineering and technologies
020101 civil engineering 02 engineering and technology engineering.material Raw material lcsh:Technology 0201 civil engineering Salt decay stable mineral pigment Environmental protection 021105 building & construction General Materials Science calcined clays Pozzolanic activity pozzolanic activity Restoration ecology Civil and Structural Engineering Lime lcsh:T Visible light irradiation Restoration mortars Calcined clays Building and Construction Pozzolan Geotechnical Engineering and Engineering Geology Low thermal treatment Stable mineral pigment low thermal treatment Computer Science Applications restoration mortars engineering Geological survey Environmental science |
| Zdroj: | Infrastructures Volume 5 Issue 12 Infrastructures, Vol 5, Iss 110, p 110 (2020) |
| ISSN: | 2412-3811 |
| DOI: | 10.3390/infrastructures5120110 |
| Popis: | Gavdos is an island of ca. 34 km2 located to the south of Crete, Greece, with a local landscape rich in clay material of remarkable diversity in colour and quality. The limited natural and human-made resources are persistently recycled, forming the built structures of the island and determining the island&rsquo s sustainable local tradition. In the framework of this research, areas with clay soil were identified through a geological survey and testimonies of local inhabitants. The studied clay samples were characterized with mineralogical and physicochemical analyses. Two out of ten samples with a clay content higher than 50%, after low-temperature thermal treatment (600 ° C and 700 ° C), functioned as pozzolanic additives enhancing the performance in resistance to salt decay and plasticity of lime mortars. Seven raw clay samples were used as pigments in lime-based colours and their performance and durability, as assessed with the appropriate laboratory analyses, revealed the existence of stable mineral pigments under UV and visible light irradiation. There is great potential in the exploitation of local raw material from the island of Gavdos for the restoration of the traditional building stock on the island in terms of resource efficiency, environmental impact and preservation of the local identity. |
| Databáze: | OpenAIRE |
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