International Journal of Sustainable Building Technology and Urban Development, 2012
There has been a lack of environmental data on building products available in the Czech Republic.... more There has been a lack of environmental data on building products available in the Czech Republic. This data is, however, needed for sustainability assessments of buildings. The aim of our work has therefore been to develop a national framework enabling this kind of building assessment, including a methodology for collecting data and a means for making it accessible to builders. A comparative analysis of several existing Life Cycle Assessment (LCA) databases of building materials has been made. It showed that building assessments using different LCA databases as sources can vary considerably, and a localised, unified database needs to be set up. The Envimat web application for calculating the environmental profiles of building structures has been developed, and it will serve as a future interactive LCA database of building products on the Czech national market. Its functionalities include uploading, sorting, searching, composing and editing building products and structures, and calculations and comparisons...
The paper presents life cycle assessment (LCA) of two detailed scenarios for complete replacement... more The paper presents life cycle assessment (LCA) of two detailed scenarios for complete replacement of a single family house. The first scenario describes a complete demolition of the original house and its replacement by a new building. The second scenario decribes building deconstruction with reuse of selected materials for a new construction. The first objective of the paper was to compare results of two simplified LCAs. The analysis discovered that the reduction of impacts due to reuse of old materials was minor because some additional structures had to be added to meet the functional requirements.
Příspěvek představuje lehký obvodový plášť panelového typu na bázi dřeva. Tento prefabrikovaný pr... more Příspěvek představuje lehký obvodový plášť panelového typu na bázi dřeva. Tento prefabrikovaný prvek může sloužit jako náhrada metalických obvodových plášťů užívaných na budovách od šedesátých let dvacátého století nebo může být použit pro novostavby. Technické řešení vhodně kombinuje moderní materiály na bázi dřeva a vytváří obálku budovy, která zajišťuje vynikající tepelnou ochranu budovy, umožňuje integrovat rozšiřující aktivní prvky a zároveň má minimální environmentální stopu. The technical solution involves a prefabricated panel curtain wall, which creates a building envelope. It provides all the functions of non-bearing outer wall. The main structural materials (panel supporting frame, exterior and interior design boards) and supplementary materials (thermal insulation and façade cladding, window frame and sash) of the proposed wall system are made of wood-based materials. The solution is primarily intended as a replacement of obsolete type of curtain walling, but can also be...
In recent years, textile reinforced concrete (TRC) is at the beginning of industrial production m... more In recent years, textile reinforced concrete (TRC) is at the beginning of industrial production mainly in Germany and relates especially to facade panels and concrete footbridges. The subtle panels with a minimum thickness of coverage layer can be designed due to the textile reinforcement, which is resistant to corrosion. Furthermore, a long durability is expected in case of these structures. The textile reinforcement with the fine-grained ultra-high performance concrete (UHPC) enables to produce concrete elements with a minimum thickness. Therefore, the concrete element with up to 70 % lower weight compared to element with conventional reinforcement can be produced and significant environmental savings can be achieved (reducing the consumption of non-renewable raw materials, transport energy, reduced dead load acting on the supporting structure, etc.).
International Journal of Sustainable Building Technology and Urban Development, 2012
There has been a lack of environmental data on building products available in the Czech Republic.... more There has been a lack of environmental data on building products available in the Czech Republic. This data is, however, needed for sustainability assessments of buildings. The aim of our work has therefore been to develop a national framework enabling this kind of building assessment, including a methodology for collecting data and a means for making it accessible to builders. A comparative analysis of several existing Life Cycle Assessment (LCA) databases of building materials has been made. It showed that building assessments using different LCA databases as sources can vary considerably, and a localised, unified database needs to be set up. The Envimat web application for calculating the environmental profiles of building structures has been developed, and it will serve as a future interactive LCA database of building products on the Czech national market. Its functionalities include uploading, sorting, searching, composing and editing building products and structures, and calculations and comparisons...
The paper presents life cycle assessment (LCA) of two detailed scenarios for complete replacement... more The paper presents life cycle assessment (LCA) of two detailed scenarios for complete replacement of a single family house. The first scenario describes a complete demolition of the original house and its replacement by a new building. The second scenario decribes building deconstruction with reuse of selected materials for a new construction. The first objective of the paper was to compare results of two simplified LCAs. The analysis discovered that the reduction of impacts due to reuse of old materials was minor because some additional structures had to be added to meet the functional requirements.
Příspěvek představuje lehký obvodový plášť panelového typu na bázi dřeva. Tento prefabrikovaný pr... more Příspěvek představuje lehký obvodový plášť panelového typu na bázi dřeva. Tento prefabrikovaný prvek může sloužit jako náhrada metalických obvodových plášťů užívaných na budovách od šedesátých let dvacátého století nebo může být použit pro novostavby. Technické řešení vhodně kombinuje moderní materiály na bázi dřeva a vytváří obálku budovy, která zajišťuje vynikající tepelnou ochranu budovy, umožňuje integrovat rozšiřující aktivní prvky a zároveň má minimální environmentální stopu. The technical solution involves a prefabricated panel curtain wall, which creates a building envelope. It provides all the functions of non-bearing outer wall. The main structural materials (panel supporting frame, exterior and interior design boards) and supplementary materials (thermal insulation and façade cladding, window frame and sash) of the proposed wall system are made of wood-based materials. The solution is primarily intended as a replacement of obsolete type of curtain walling, but can also be...
In recent years, textile reinforced concrete (TRC) is at the beginning of industrial production m... more In recent years, textile reinforced concrete (TRC) is at the beginning of industrial production mainly in Germany and relates especially to facade panels and concrete footbridges. The subtle panels with a minimum thickness of coverage layer can be designed due to the textile reinforcement, which is resistant to corrosion. Furthermore, a long durability is expected in case of these structures. The textile reinforcement with the fine-grained ultra-high performance concrete (UHPC) enables to produce concrete elements with a minimum thickness. Therefore, the concrete element with up to 70 % lower weight compared to element with conventional reinforcement can be produced and significant environmental savings can be achieved (reducing the consumption of non-renewable raw materials, transport energy, reduced dead load acting on the supporting structure, etc.).
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