TY - GEN

T1 - Real offshore exposure tests of a mineral corrosion protection system

AU - Tomann, Christoph

AU - Schack, Tobias

AU - Lohaus, Ludger

N1 - Funding Information: The investigations were carried out within the research project GIGAWIND-life. The research project (funding code: 0325575A) was funded by the Bundesministerium für Wirtschaft und Energie (BMWi, Federal Ministry for Economic Affairs and Energy) and the Project Management Jülich (PtJ). Publisher Copyright: Copyright © 2017 by the International Society of Offshore and Polar Engineers (ISOPE). Copyright: Copyright 2017 Elsevier B.V., All rights reserved.

PY - 2017/6

Y1 - 2017/6

N2 - Functional corrosion protection systems are absolutely essential for ensuring the durability of offshore wind energy converters. As an alternative to conventional corrosion protection systems, a thin layer of high performance mortar could be applied around the turbine tower to protect it from the harsh maritime conditions. A flowable mortar with a high density is required in order to prevent a chloride penetration that could potentially damage the steel structure. In this context, the Institute of Building Materials Science in Hanover applied special test specimens under real maritime conditions on an existing wind energy converter in the North Sea. The test specimens represent the mineral corrosion protection system and were exposed for about five years to the maritime conditions. Since the aggressiveness of offshore conditions varies with the position along the wind energy converter, the test specimens were applied in three different altitudes (atmospheric zone, splash zone and underwater zone). This paper presents an innovative concept for a mineral corrosion protection layer for offshore applications. Different mortar systems were investigated with regard to their penetration resistance against chlorides and their corrosion protective capacity in general. The offshore exposure was accompanied by additional laboratory investigations.

AB - Functional corrosion protection systems are absolutely essential for ensuring the durability of offshore wind energy converters. As an alternative to conventional corrosion protection systems, a thin layer of high performance mortar could be applied around the turbine tower to protect it from the harsh maritime conditions. A flowable mortar with a high density is required in order to prevent a chloride penetration that could potentially damage the steel structure. In this context, the Institute of Building Materials Science in Hanover applied special test specimens under real maritime conditions on an existing wind energy converter in the North Sea. The test specimens represent the mineral corrosion protection system and were exposed for about five years to the maritime conditions. Since the aggressiveness of offshore conditions varies with the position along the wind energy converter, the test specimens were applied in three different altitudes (atmospheric zone, splash zone and underwater zone). This paper presents an innovative concept for a mineral corrosion protection layer for offshore applications. Different mortar systems were investigated with regard to their penetration resistance against chlorides and their corrosion protective capacity in general. The offshore exposure was accompanied by additional laboratory investigations.

KW - Corrosion protection

KW - High performance mortar

KW - Offshore wind energy converters

KW - Penetration resistance against chlorides

UR - http://www.scopus.com/inward/record.url?scp=85038931314&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:85038931314

T3 - Proceedings of the International Offshore and Polar Engineering Conference

SP - 468

EP - 474

BT - Proceedings of the 27th International Ocean and Polar Engineering Conference, ISOPE 2017

PB - Society of Petroleum Engineers (SPE)

T2 - 27th International Ocean and Polar Engineering Conference, ISOPE 2017

Y2 - 25 June 2017 through 30 June 2017

ER -