Current Issue Flipbook

Trade Journals for the Concrete Industry

Current Issue Archive Online Flipbooks CPI Middle East CPI TV Events Buyers' Guide Newsletter Advertising Subscription

High-performance textile reinforcements for thin and light concrete constructions

Durable and resource-saving


Reinforced concrete is considered the most important construction material in the building industry on account of its versatile formability. The advantages – high strength and comparatively simple processing at low cost in addition to formability – are, however, opposed by a decisive disadvantage: the susceptibility of the reinforcement to corrosion. Concrete is highly alkaline and forms a so-called passive layer on the steel that protects it against corrosion. Substances penetrating into the concrete from the outside can lower the alkalinity in time and damage the passive layer, allowing the steel reinforcement to corrode. This usually results in spalling of the concrete, which reduces the durability of the entire structure and in extreme cases leads to the failure of the construction. In particular structures from the 1950s to the 1970s such as bridges, which in addition must withstand high stresses, can exhibit such serious damage after 15 to 20 years that cost-intensive and elaborate repairs are necessary. In order to prevent that, the steel reinforcement must be protected by a sufficiently dense and thick concrete covering which, according to current standards, must be at least 35 mm thick for outdoor structural elements. In the case of façade panels in particular, this results in slab thicknesses of at least 100 mm in order to guarantee durable structural elements. If the steel reinforcements are now replaced by non-metallic reinforcements, for example textile reinforcements, a few millimetres suffice to ensure the durability and the bond between the concrete and the reinforcement. Façade panels with thicknesses of between 20 and 30 mm can thus be manufactured and 70 to 80% of the concrete can be saved, which in turn has a positive effect on the transport and assembly costs of precast elements manufactured in this way. Textile reinforced concrete is equally suited to the manufacture of new structural elements and the reinforcement of existing ones – where existing buildings are concerned, for example, buildings threatened by demolition can be repaired and resources saved. Like steel reinforced concrete, the tensile forces freed during the formation of cracks in the concrete are absorbed by the textile reinforcement. Flat, mesh-like structures are used, which are usually manufactured as a non-woven fabric made of alkali-resistant glass fibres (AR glass) or carbon fibres. The fibres are characterised by extremely high strengths, which are five to six times higher than is the case with conventional reinforcing steel. The main properties of the fibres and the concretes are described below.

Show article
Download article


solidian GmbH
Parkweg 2, 72458 Albstadt, Germany
T + 49 7431 10-2670, F + 49 7431 10-62670
info@solidian.de, www.solidian.de

CPi worldwide journals are trade journals for the concrete and precast concrete industry that are published in 10 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.

About us
ad-media GmbH

Industriestrasse 180
50999 Cologne

T: + 49 2236 96 23 90
F: + 49 2236 96 23 96

  • Magazine
  • CPi-tv
  • Events
  • Buyers' Guide
  • Newsletter
  • Advertising
  • Patents
  • ad-media GmbH
  • Linkedin
  • Imprint
  • Data Protection
We are using Cookies on www.cpi-worldwide.com. Some of them are essential, while others help us improve this website and your experience. More information can be found in our privacy policy. Accept all Extended Configuration
Cookies of this category are required for the basic functions of the website. They are used for safe and proper use and therefore cannot be deactivated.
Cookies of this category allow us to analyze (Google Analytics) the use of the website and measure performance. They also help us to provide useful functions.
Cookies of this category allow us to show third-party content (social networks, videos)
Save settings and close Accept all