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Title:	SMART-DECK: Vom Konzept zum Demonstrator
Abstract:	Ein wesentlicher Faktor, der die Dauerhaftigkeit von Infrastrukturbauwerken negativ beeinflusst, ist das Eindringen von tausalzbelastetem Wasser in den Konstruktionsbeton infolge von Undichtigkeiten in der Abdichtungsebene. Innerhalb des Verbundforschungsvorhabens SMART-DECK, das als Beitrag der Initiative “HighTechMatBau” vom BMBF gefördert wurde, wurde ein multifunktionales System zur Instandsetzung und zum Schutz von Infrastrukturbauwerken erarbeitet. SMART-DECK wurde von sieben Partnern, die die gesamte Wertschöpfungskette von SMART-DECK abbilden, erarbeitet. Mitwirkend war auch die Bundesanstalt für Straßenwesen (BASt), die SMART-DECK aus Nutzersicht im Hinblick auf seine Funktionalität und Praxistauglichkeit beurteilte. Das System bietet drei Funktionalitäten. Es können ein vollflächiges Echtzeit-Feuchtemonitoring, ein abschnittsweise steuerbarer präventiver kathodischer Korrosionsschutz (pKKS) und eine Erhöhung der Querkrafttragfähigkeit bei Bestandsbrücken realisiert werden. Mit dem Monitoring können Schäden in der Abdichtungsebene frühzeitig erkannt und, in Kombination mit dem pKKS, Verkehrsbehinderungen infolge von Instandsetzungsarbeiten vermieden werden, da die Instandsetzung in verkehrsgünstigere Perioden verschoben werden kann. Alle drei Funktionalitäten werden mittels Textilbeton realisiert. Der Aufsatz stellt das System und die innerhalb des Verbundforschungsvorhabens realisierten zwei Demonstratoren zur Demonstration der Leistungsfähigkeit des Systems vor. SMART-DECK: concept and realization The ingress of chloride contaminated water through defects in the sealant layers is one of the major factors, which leads to a decrease of the life-time of infrastructure constructions made out of reinforced concrete as well as prestressed concrete. Within the research project SMART-DECK a multi-functional system is developed which can be used to repair and protect infrastructure constructions. The research project is founded by the “HighTechMatBau” program issued by the German ministry of education and research. The system is developed by seven research partners which cover all aspects of the realization of such an innovative produced, including the German BASt (Federal highway research institute), which judges the system by its performance in respect to the requirements of road building authorities. SMART-DECK enables a real-time monitoring of water ingress into the structure, a preventive cathodic protection system as well as an increase of the load bearing capacity. The monitoring delivers the current status of the construction in respect of water ingress thru the sealant and, if necessary, the preventive cathodic protection system allows a protection of the reinforcement until the sealant is repaired. This repair work can then be carried out in a feasible time-slot due to the protection enabled by the preventive cathodic protection system. All three functions are realized by using textile reinforced concrete. Within the research project a large number of laboratory test are performed as well as two demonstrating objects were realized. This article gives an overview of SMART-DECK and presents two different real-size demonstrating objects which were realized by the research partners in order to demonstrate the functionalities of the system.
Source:	Bautechnik 97 (2020), No. 1
Page/s:	48-56
Language of Publication:	German

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