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A platform for research: civil engineering, architecture and urbanism
Development of a Fire-Resistant Straw- and Waste Glass-Based Thermal Insulation Board
https://orcid.org/http://orcid.org/0000-0003-1186-1773
https://orcid.org/http://orcid.org/0000-0003-1373-5930
In the presented research, barley- and wheat straw, waste glass and waterglass were used as the primary raw materials for developing bio-based thermal insulation. An analytic-empirical model was developed to describe the heat transfer process in raw straw bulks based on laboratory experiments dealing with the properties of individual natural straw stems and stem bulks. Based on the key properties of stems and optimal bulk density, which can minimize the thermal conductivity, we developed a treatment method to reduce the thermal conductivity of stems further. The base binder was upgraded with modifiers to meet all the requirements. Mainly the water resistance of waterglass has to be improved. A cyclic test of cured binder samples showed that the dissolution loss could be decreased by 30–40%. Mechanical properties could be improved using different drying methods (conventional oven, microwave). Microwave drying can increase the compressive strength by twice-three times. The thermal conductivity of straw can be reduced by 8–11% and straw-silicate composite by 17–18% using heat treatment and the modified binder. The binder behaves well at high temperatures and protects natural fibres from fire combined with the fibre treatment so that the straw silicate material could be classified A2 based on the EN ISO 1182 standard. As a result of the briefly summarized research, we created a fire-resistant thermal insulation whose thermal conductivity is below 0.039 W/mK, meets the requirements of crotch resistance, and can be applied on floors and facades in the same way as the currently widely used thermal insulation boards.
Development of a Fire-Resistant Straw- and Waste Glass-Based Thermal Insulation Board
https://orcid.org/http://orcid.org/0000-0003-1186-1773
https://orcid.org/http://orcid.org/0000-0003-1373-5930
In the presented research, barley- and wheat straw, waste glass and waterglass were used as the primary raw materials for developing bio-based thermal insulation. An analytic-empirical model was developed to describe the heat transfer process in raw straw bulks based on laboratory experiments dealing with the properties of individual natural straw stems and stem bulks. Based on the key properties of stems and optimal bulk density, which can minimize the thermal conductivity, we developed a treatment method to reduce the thermal conductivity of stems further. The base binder was upgraded with modifiers to meet all the requirements. Mainly the water resistance of waterglass has to be improved. A cyclic test of cured binder samples showed that the dissolution loss could be decreased by 30–40%. Mechanical properties could be improved using different drying methods (conventional oven, microwave). Microwave drying can increase the compressive strength by twice-three times. The thermal conductivity of straw can be reduced by 8–11% and straw-silicate composite by 17–18% using heat treatment and the modified binder. The binder behaves well at high temperatures and protects natural fibres from fire combined with the fibre treatment so that the straw silicate material could be classified A2 based on the EN ISO 1182 standard. As a result of the briefly summarized research, we created a fire-resistant thermal insulation whose thermal conductivity is below 0.039 W/mK, meets the requirements of crotch resistance, and can be applied on floors and facades in the same way as the currently widely used thermal insulation boards.
Development of a Fire-Resistant Straw- and Waste Glass-Based Thermal Insulation Board
https://orcid.org/http://orcid.org/0000-0003-1186-1773
https://orcid.org/http://orcid.org/0000-0003-1373-5930
In the presented research, barley- and wheat straw, waste glass and waterglass were used as the primary raw materials for developing bio-based thermal insulation. An analytic-empirical model was developed to describe the heat transfer process in raw straw bulks based on laboratory experiments dealing with the properties of individual natural straw stems and stem bulks. Based on the key properties of stems and optimal bulk density, which can minimize the thermal conductivity, we developed a treatment method to reduce the thermal conductivity of stems further. The base binder was upgraded with modifiers to meet all the requirements. Mainly the water resistance of waterglass has to be improved. A cyclic test of cured binder samples showed that the dissolution loss could be decreased by 30–40%. Mechanical properties could be improved using different drying methods (conventional oven, microwave). Microwave drying can increase the compressive strength by twice-three times. The thermal conductivity of straw can be reduced by 8–11% and straw-silicate composite by 17–18% using heat treatment and the modified binder. The binder behaves well at high temperatures and protects natural fibres from fire combined with the fibre treatment so that the straw silicate material could be classified A2 based on the EN ISO 1182 standard. As a result of the briefly summarized research, we created a fire-resistant thermal insulation whose thermal conductivity is below 0.039 W/mK, meets the requirements of crotch resistance, and can be applied on floors and facades in the same way as the currently widely used thermal insulation boards.
Development of a Fire-Resistant Straw- and Waste Glass-Based Thermal Insulation Board
RILEM Bookseries
Amziane, Sofiane (editor) / Merta, Ildiko (editor) / Page, Jonathan (editor) / Csanády, Dániel (author) / Nagy, Balázs (author)
International Conference on Bio-Based Building Materials ; 2023 ; Vienna, Austria
2023-06-14
14 pages
Article/Chapter (Book)
Electronic Resource
English
| European Patent Office | 2016