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A platform for research: civil engineering, architecture and urbanism
Potentials of Textile Reinforced Concrete for Lightweight Noise Protection Walls
Abstract Until now, there are installed 8.8 million square meters of noise protection walls in Germany. Due to the negative impact of noise pollution on our quality of life and the rising requirements on noise protection itself, the amount of noise protection walls will increase in the next decades. The commonly used steel reinforced concrete noise barrier consist out of a non-bearing noise protection layer based on lightweight concrete (LC) and a load-bearing layer based on normal steel reinforced concrete, which means an enormous usage of resources. At the “Department of Building Materials”, TU Dortmund University, a study with the aim to reduce the weight of concrete noise protection wall elements up to a third has been started. In addition to transport and installation work aspects, the targeted material savings are intended to improve the carbon dioxide footprint. The material of choice for the new lightweight wall elements is textile reinforced concrete (TRC), which consists of a fine-grained concrete and a technical-textile reinforcement. In the first step of the study, two concepts for lightweight load-bearing structures out of TRC were developed and calculated. Both concepts incorporate the benefit of the corrosion resistance of carbon textiles. The first load-bearing concept uses TRC in combination with textile reinforced LC, while the second one employs TRC in a tee-beam shape additionally reinforced with glass fiber rebars. In preliminary investigations, both load-bearing concepts were tested and the tee beam shape has demonstrated a sufficient load bearing capacity. Furthermore, the results indicate that it is possible to reduce the total weight of the walls to less than a half. In the next step of the study, the dimension of the promising specimens will be up-scaled to those of common noise protection walls, while further load-bearing concepts have to be tested.
Potentials of Textile Reinforced Concrete for Lightweight Noise Protection Walls
Abstract Until now, there are installed 8.8 million square meters of noise protection walls in Germany. Due to the negative impact of noise pollution on our quality of life and the rising requirements on noise protection itself, the amount of noise protection walls will increase in the next decades. The commonly used steel reinforced concrete noise barrier consist out of a non-bearing noise protection layer based on lightweight concrete (LC) and a load-bearing layer based on normal steel reinforced concrete, which means an enormous usage of resources. At the “Department of Building Materials”, TU Dortmund University, a study with the aim to reduce the weight of concrete noise protection wall elements up to a third has been started. In addition to transport and installation work aspects, the targeted material savings are intended to improve the carbon dioxide footprint. The material of choice for the new lightweight wall elements is textile reinforced concrete (TRC), which consists of a fine-grained concrete and a technical-textile reinforcement. In the first step of the study, two concepts for lightweight load-bearing structures out of TRC were developed and calculated. Both concepts incorporate the benefit of the corrosion resistance of carbon textiles. The first load-bearing concept uses TRC in combination with textile reinforced LC, while the second one employs TRC in a tee-beam shape additionally reinforced with glass fiber rebars. In preliminary investigations, both load-bearing concepts were tested and the tee beam shape has demonstrated a sufficient load bearing capacity. Furthermore, the results indicate that it is possible to reduce the total weight of the walls to less than a half. In the next step of the study, the dimension of the promising specimens will be up-scaled to those of common noise protection walls, while further load-bearing concepts have to be tested.
Potentials of Textile Reinforced Concrete for Lightweight Noise Protection Walls
Beßling, Markus (author) / Antons, Udo (author) / Orlowsky, Jeanette (author)
2017-08-06
8 pages
Article/Chapter (Book)
Electronic Resource
English
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