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On the aggressive nature of non-aggressive water – deterioration of cement-based materials in permanent contact with drinking water

Schwotzer, Matthias; Gerdes, Andreas

Abstract (englisch):
The long-term performance of the drinking water supply infrastructure is of utmost importance for further social development. Therefore, in all epochs of European history drinking water reservoirs were coated with mineral mortar linings. Although drinking water is commonly not considered to be particularly harmful to cement-based systems, modern coatings systems often show insufficient durability in this particular operational environment. Especially in regions with hard drinking water, there are frequent damages appearing on the cement-based mortar linings, for which the causes are still the subject of intensive scientific discussions. Such degradation reactions of mortar linings in drinking water storage tanks, which are referred to as hydrolytic corrosion, can cause considerable damage after a service life of only a few months. This results in cost intensive repair measures and thus high life-cycle costs as well associated with an ecological burden. Furthermore, an insufficient understanding of degradation mechanisms and their underlying physical, chemical as well as biological processes currently impedes performance-oriented app ... mehr

Zugehörige Institution(en) am KIT Institut für Funktionelle Grenzflächen (IFG)
Publikationstyp Vortrag
Jahr 2018
Sprache Englisch
Identifikator KITopen ID: 1000082369
HGF-Programm 34.15.01; LK 01
Erschienen in H2OSummit, 1st International Water Congress 2018, Rovinj, Croatia, 18.-21.04.2018
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