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Title: SEA GRASS POSIDONIA OCEANICA AS AN UNCONVENTIONAL THERMAL INSULATION
SEA GRASS POSIDONIA OCEANICA AS AN UNCONVENTIONAL THERMAL INSULATION

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Tomas Vimmr; Klara Kobeticova; Jitka Krejsova; Alena Vimmrova
10.5593/sgem2024v/6.2/s25.30
10.5593/sgem2024v/6.2
1314-2704
978-619-7603-78-1
English
24
6.2
•    Prof. DSc. Oleksandr Trofymchuk, UKRAINE 
•    Prof. Dr. hab. oec. Baiba Rivza, LATVIA
Green Building Materials and Eco-Technologies
The construction industry is one of the largest air polluters. This fact, along with the increasing demand for savings of heating energy, is leading to a growing interest in more eco-friendly materials for building thermal insulations. New thermal insulating material, prepared from the Posidonia Oceanica (commonly known as sea grass or Neptune grass) was prepared and studied. Posidonia Oceanica is an endemic plant that grows in large quantities in the shallow waters of the Mediterranean Sea. It is a protected species, but this protection does not apply to the non-living parts of the plant. Thermal insulating boards were made from dead Posidonia leaves bonded with plant-based epoxy. Bulk density of the boards ranged from 159 to 289 kg/m3, and coefficient of thermal conductivity was between 0.054 and 0.076 W/m. K. Tensile strength of boards with bulk density 240 kg/m3 and higher exceeded 2 MPa, which is sufficient for thermal insulation purposes. The ecotoxicity test showed that material is not ecotoxic for algae. The diffusion resistance of the boards was high (from 22 to 196 by wet cup method and 36 to 178 by dry cup method), because of the impermeable resin on the surface. The main problem of the Posidonia Oceanica boards was low mold resistance, which is common problem of most natural-based materials. This must be resolved, along with fire protection, before the material can be used in the buildings.
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The BIO4EEB project has received funding from the European Health and Digital Executive Agency (HADEA) under the European Union’s Horizon Europe research and innovation program under Grant Agreement No 101091967. This research has been also supported by the project CTU in Prague SGS22/137/OHK1/3T/11.
conference
https://doi.org/10.5593/sgem2024v/6.2/s25.30
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Proceedings of 24th International Multidisciplinary Scientific GeoConference SGEM 2024
24th International Multidisciplinary Scientific GeoConference SGEM 2024, 27 - 30 November, 2024
Proceedings Paper
STEF92 Technology
International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Russian Acad Arts; Turkish Acad Sci.
239-246
27 - 30 November, 2024
website
10181
thermal insulation, Posidonia Oceanica, Neptune grass, thermal conductivi

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