Development of Effective Textile-Reinforced Concrete Noise Barrier

Henrik L Funke,Lothar Kroll,Sandra Gelbrich

doi:10.5539/jmsr.v4n3p33

Abstract

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, load-bearing concrete (TRC) slab and a shell with a very high level of sound absorption. This 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 warp-knit fabric was modified and integrated into the fine concrete matrix, a formwork system at prototype scale was designed enabling noise barriers to be produced with an application-oriented approach and examined in practically investigations 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.

Highlights

Noise is a consequence of increasing mobility and has a negative effect on both human beings and the environment
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 warp-knit fabric was modified and integrated into the fine concrete matrix, a formwork system at prototype scale was designed enabling noise barriers to be produced with an application-oriented approach and examined in practically investigations 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

Summary

Introduction

Noise is a consequence of increasing mobility and has a negative effect on both human beings and the environment. The continual rise in traffic density, which grew by more than 70 percent on motor ways between 1980 and 2012 (Lohre et al, 2012), has led to greater noise emissions. Today, this makes sound protection measures more important than ever. This makes sound protection measures more important than ever It does not matter whether these noise barriers are for major roads, motorways or high-speed sections. For such systems, there are very complex and contain restrictions with regards to load-bearing capacity, serviceability and functionality. The objective is savings on resources not just based on optimizing weight and minimizing manufacturing costs and leading to decreasing expenditure for transport and assembly

Methods

Results

Conclusion