DBV-Guide to Good Practice. Steel Fibre Concrete. Edition October Original version: “DBV-Merkblatt Stahlfaserbeton” (German). Editor: German Society. DBV-Merkblatt Industrieböden, Stahlfaserbeton Guide to Good Practice – Steel Fibre Reinforced Industrial Concrete Floors – Special Features of the. DBV-Merkblatt Bemessungsgrundlagen für Stahlfaserbeton im Tunnelbau. Front Cover. Deutscher Beton-Verein. DBV, – 23 pages.
|Genre:||Health and Food|
|Published (Last):||15 December 2005|
|PDF File Size:||19.22 Mb|
|ePub File Size:||9.97 Mb|
|Price:||Free* [*Free Regsitration Required]|
Design of the steel-fibre-reinforced concrete lining segments was otherwise in accordance with the DBV code . In addition, the same load level as with the conventional reinforcement alternative was also achieved. These segments are installed as support behind the shield machine and produce a closed annular ring which, in the case of single-shell lining, is also not further supplemented.
The minimum steel fibre content necessary to achieve a residual flexural tensile strength of 1. Extremely demanding durability requirements were defined in the invitation to tender for this project.
The problems of spalling at edges and corners, otherwise frequently encountered on individual segments, were satisfactorily suppressed. Emerald Group Publishing One of the most recent major projects to include on-site segment production started in with the STEP tunnel project in Abu Dhabi.
The flexural tensile strength determined after cracking is used as a characteristic value on the material-resistance side for dimensioning of segmental-lining elements. Thanks to the performance range of the macrofibres the technical values are enhanced quite apart from comfort for You already recently rated this item.
Steel-fibre-reinforced concrete was initially used as a substitute for nominal reinforcement or in combination with conventional reinforcing steel, in order to enhance the serviceability of concrete structures.
Scientific Data Management Research Staff. Careers and apprenticeships Equal opportunities Vacancies Apprenticeships.
The concept of using a high-performance steel-fibre-reinforced concrete was, therefore, a relatively obvious step. Conventional reinforcement can be omitted entirely in cases in which load-bearing capacity is assured by the steel fibres alone.
Steel fibre concrete DBV guide to good practice – Technische Informationsbibliothek (TIB)
The higher the moments occurring, the greater the necessary degree of reinforcement. Merkblatt Technologie des Stahlfaserbetons und Stahlfaserspritzbetons. Of particular dbv-merkbpatt is the fact that steel-fibre-reinforced concrete with usual stahlfaserbetn contents is equivalent to a sub-critical reinforcement.
Please verify that you dbv-merkblwtt not a robot. Illustrationen, Diagramme ; 21 cm Responsibility: Continuous quality control is being done to check the performance at defined intervals. WorldCat is the world’s largest dbv-merkkblatt catalog, helping you find library materials online.
Beam tests for verification of performance, and wash-out tests for continuous monitoring of uniform fibre distribution is foreseen. Similar Items Related Subjects: The various problems associated with steel fibres such as e. Regrettably, indication of copyright fee is not available. Tunnels are highly statically indeterminate systems. Concrete is classified by its strength in compression. The replacement of conventional reinforcement by steel fibres also assures cost-savings potentials for reinforcement work production, storage and installation of the reinforcement cages and enhances flexibility in case, for example, of project modifications.
You may send this item to up to five recipients.
Add a review and share your thoughts with other readers. Numerous tunnel projects around the world have been implemented using steel-fibre-reinforced concrete segmental linings in recent years.
The following types of reinforcement were comparatively assessed: The name field is required. Joints are particularly critical points. There are two different systems for certification of conformity: The evaluation methods differ, however. Page navigation Document information Similar titles.
Enhancement of cross-sectional load-bearing capacity Steel-fibre-reinforced concrete in cracked condition remains capable of transferring Loadings and taking up forces. Early application of the initial support, combined with the strength of steel-fibre-reinforced concrete at young age, reduces ground disintegration phenomena and, as a corollary, also overburden pressure, achieving a significantly better stress state.
In addition, the load taken up borne directly by the rock itself is also increased in the case of more flexible systems. Statically determinate beam tests are used for the determination of materials properties. The influence of the fibres on the strength of concrete is tested on a reference concrete, in order to provide the user with an idea of the performance of individual fibre types. The test procedure utilising statically determinate test beams provides a method suitable for conversion of the results to a design for cross-sectional capacity in the various states of construction, or for the M-N interaction diagram, for instance.
The panel test is not examined in any more detail in this article. The critical load case in serviceability limit state was determined.