A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Concrete mast restoration using multi-axial AR-glass structures
The quality of infrastructure has major influence on the economical success of a region or a country. Masts are designed to transfer electricity, telephone conductions, conductions for trains or trams or as light masts. Obviously, masts are an integral part of the infrastructure. Masts can be made of wood, steel, fibre reinforced plastic, or reinforced or pre-stressed concrete. In general these structural elements made of concrete have proven to be durable and to have a sufficient load bearing capacity over a long period of time. Masts showed a substantial rate of damage during the last decades. In principal it can be stated that 20 % of all reinforced or pre-stressed concrete masts in Germany show a mean damage after 25 years. The causes of damage are discussed. In several branches of industry such as manufactory system engineering or the civil engineering compound materials are used very successfully. The principal suitability of textile structures for the reinforced concrete of concrete structural elements has already been shown. To manufacture the textile reinforcement structure alkali-resistant glass filament yarn of the type AR620S-800 from Nippon Electric Glass (NEG) has been used. The yarn fineness of 620 tex corresponds to 0.22 mm cross-section area. From the results, it can be clearly seen that the strengthening using textile reinforcement leads to an increase of the ultimate load capacity of the masts. This increase depends on the technology of application of the textile reinforcement structure. The bending tests showed a maximum increase at approximately 30 % and the torsion tests showed a maximum increase of approximately 60 %.
Concrete mast restoration using multi-axial AR-glass structures
The quality of infrastructure has major influence on the economical success of a region or a country. Masts are designed to transfer electricity, telephone conductions, conductions for trains or trams or as light masts. Obviously, masts are an integral part of the infrastructure. Masts can be made of wood, steel, fibre reinforced plastic, or reinforced or pre-stressed concrete. In general these structural elements made of concrete have proven to be durable and to have a sufficient load bearing capacity over a long period of time. Masts showed a substantial rate of damage during the last decades. In principal it can be stated that 20 % of all reinforced or pre-stressed concrete masts in Germany show a mean damage after 25 years. The causes of damage are discussed. In several branches of industry such as manufactory system engineering or the civil engineering compound materials are used very successfully. The principal suitability of textile structures for the reinforced concrete of concrete structural elements has already been shown. To manufacture the textile reinforcement structure alkali-resistant glass filament yarn of the type AR620S-800 from Nippon Electric Glass (NEG) has been used. The yarn fineness of 620 tex corresponds to 0.22 mm cross-section area. From the results, it can be clearly seen that the strengthening using textile reinforcement leads to an increase of the ultimate load capacity of the masts. This increase depends on the technology of application of the textile reinforcement structure. The bending tests showed a maximum increase at approximately 30 % and the torsion tests showed a maximum increase of approximately 60 %.
Concrete mast restoration using multi-axial AR-glass structures
Betonmastsanierung mit mehraxialen Gelegestrukturen aus AR Glas
Franzke, G. (author) / Engler, T. (author) / Schierz, M. (author) / Hempel, R. (author) / Brückner, A. (author) / Proske, D. (author) / Ortlepp, S. (author)
2001
8 Seiten, 16 Bilder, 12 Quellen
(nicht paginiert)
Conference paper
Storage medium
English
Concrete mast restoration using multi-axial glass structures
| British Library Conference Proceedings | 2002