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Scientific basis and operational implementation in construction

Noise barriers using a lightweight, textile-based construction method


Thin-walled, high-strength concrete elements exhibiting low system weight and great slenderness can be created with a large degree of lightweight structure using the textile reinforced concrete construction method. Within the framework of practical research in terms of material technology, a noise barrier, composed of a textile-reinforced, load-bearing concrete slab and a shell with a very high level of sound absorption, was developed with the objective of lowering system weight, and then implemented operationally in construction. Arising from the specifications placed on the load-bearing concrete slab, the following took place: an adapted fine-grain concrete matrix was assembled, a carbon mesh was modified, and this carbon mesh was built into the fine concrete matrix in a manner able to cope with the loading. In addition, a new absorbent shell was developed made from lightweight concrete with expanded clay as an aggregate. Based on the results, a formwork system at prototype scale was designed enabling noise barriers to be produced with an application-oriented approach and examined in practice. Objectives such as resource efficiency, cost reduction and a decrease in transport and assembly expenses were able to be practically implemented in construction within the context of the project. This meant that a substantial lowering of the load-bearing concrete slab’s system weight was possible, which led to a decrease in transport and assembly costs.

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CPi worldwide journals are trade journals for the concrete and precast concrete industry that are published in 12 different language editions in more than 170 countries. These trade journals, with their practical editorial reporting on research, production and applications, are specifically addressing the decision makers of the concrete and precast concrete industry.

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