Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Plieno ir betono kompozitinių sijų su medinėmis perdangos plokštėmis įrengimo technologijų tyrimai / ; Research into installation technologies of steel-concrete composite beams combined with timber-concrete composite slabs.
In today's world, Europe is leading the fight against climate change with the goal to become climate neutral through the European Green Deal by 2050. The construction sector, as one of the most polluting, is particularly focused on changes. Cement, being an extremely polluting material, is being out phased. 50% of the construction materials of public buildings will have to be of organic origin starting from February 2024 in Lithuania. One alternative is to replace concrete floor slabs with cross-laminated timber (CLT) panels. Since more strength is often required than CLT panels alone can provide, this floor is additionally poured with a layer of concrete, creating a composite floor that is 3 to 5 times more resistant to bending forces than CLT alone of the same thickness. Although much research has been done on joint types and shear reduction, there is a lack of knowledge on the interaction between wood and concrete in composite panels, such as how the water absorption of wood affects the physical and mechanical properties of concrete. There is also a lack of information on which wood impregnation/coating methods are rational, since water damage is an important issue in construction. After the literature review, two potent materials were selected for coating of the wood, which have a potential to solve one or more problems. The first material chosen is mineral oil and second material chosen is a two-component cement-polymer waterproofing. This study was conducted in the faculty laboratory, where the mechanical and physical properties of composite wood-concrete panels were tested with different wood coatings and the results were compared with a reference sample that was not coated with any material. The results of 14 samples were obtained after testing. 4 CLT and 3 LVL specimens were used for experiment and values were measured 3, 7, 14 and 28 days after pouring concrete. After testing the moisture content of the wood, it was found that without using any CLT coating, the wood absorbs too much water and exceeds ...
Plieno ir betono kompozitinių sijų su medinėmis perdangos plokštėmis įrengimo technologijų tyrimai / ; Research into installation technologies of steel-concrete composite beams combined with timber-concrete composite slabs.
In today's world, Europe is leading the fight against climate change with the goal to become climate neutral through the European Green Deal by 2050. The construction sector, as one of the most polluting, is particularly focused on changes. Cement, being an extremely polluting material, is being out phased. 50% of the construction materials of public buildings will have to be of organic origin starting from February 2024 in Lithuania. One alternative is to replace concrete floor slabs with cross-laminated timber (CLT) panels. Since more strength is often required than CLT panels alone can provide, this floor is additionally poured with a layer of concrete, creating a composite floor that is 3 to 5 times more resistant to bending forces than CLT alone of the same thickness. Although much research has been done on joint types and shear reduction, there is a lack of knowledge on the interaction between wood and concrete in composite panels, such as how the water absorption of wood affects the physical and mechanical properties of concrete. There is also a lack of information on which wood impregnation/coating methods are rational, since water damage is an important issue in construction. After the literature review, two potent materials were selected for coating of the wood, which have a potential to solve one or more problems. The first material chosen is mineral oil and second material chosen is a two-component cement-polymer waterproofing. This study was conducted in the faculty laboratory, where the mechanical and physical properties of composite wood-concrete panels were tested with different wood coatings and the results were compared with a reference sample that was not coated with any material. The results of 14 samples were obtained after testing. 4 CLT and 3 LVL specimens were used for experiment and values were measured 3, 7, 14 and 28 days after pouring concrete. After testing the moisture content of the wood, it was found that without using any CLT coating, the wood absorbs too much water and exceeds ...
Plieno ir betono kompozitinių sijų su medinėmis perdangos plokštėmis įrengimo technologijų tyrimai / ; Research into installation technologies of steel-concrete composite beams combined with timber-concrete composite slabs.
Širvinskas, Mantas (Autor:in) / Daukšys, Mindaugas
01.01.2025
Hochschulschrift
Elektronische Ressource
Lithuanian , Englisch