Regenerative Energie
According to EN 1508 [1], 'Service reservoirs shall be designed, constructed and operated to prevent contamination or other chemical, physical and biological changes that are detrimental to the water qualityâ€. Only approved materials shall be used in the surfaces in contact with the stored water. ' In order to facilitate subsequent cleaning and avoid bacterial growth, internal surfaces shall be as smooth and pore-free as possible.
The governing standard for drinking water reservoirs, EN1508 and Water Authority engineers [1,2] consider that a high quality low porosity surface is essential for hygienic reasons. A proven technique for optimizing the quality of concrete surfaces is the use of Controlled Permeability Formwork (CPF). Test cores taken from three drinking water reservoirs constructed in Germany in the early 1990’s have been examined to assess concrete quality and porosity. CPF cast surfaces have a much lower porosity and are virtually blowhole free when compared to concrete cast against steel or plywood faced formwork or to the surfaces produced by shotcrete/cement mortar coatings. From this it is concluded that the use of CPF is appropriate for the production of quality low porosity surfaces for drinking water reservoirs as defi ned by the standards.
| Copyright: | © DIV Deutscher Industrieverlag GmbH |
| Quelle: | International Issue 2009 (September 2009) |
| Seiten: | 3 |
| Preis: | € 3,00 |
| Autor: | Ltd. Akad. Dir. PD Dr.-Ing. Gerhard Merkl |
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Hochlauf der Wasserstoffwirtschaft
© Lexxion Verlagsgesellschaft mbH (8/2024)
Überblick über und Diskussion der Maßnahmen zum beschleunigten Ausbau
der Wasserstoffinfrastruktur in Deutschland
Die innerstaatliche Umsetzung des Pariser Klimaschutzübereinkommens
- ein Rechtsvergleich
© Lexxion Verlagsgesellschaft mbH (8/2024)
Like all public international law treaties, the Paris Climate Accords rely on national law for their implementation. The success of the agreement therefore depends, to a large extent, on the stepstaken or not taken by national governments and legislators as well as on the instruments and mechanisms chosen for this task. Against this background, the present article compares different approaches to the implementation of the Paris Agreement, using court decisions as a means to assess their (legal) effectiveness.
Klimaschutzrecht und Erzeugung erneuerbarer Energien in der Schweiz
© Lexxion Verlagsgesellschaft mbH (8/2024)
Verschachtelte Gesetzgebung unter politischer Ungewissheit