Sustainable Concretes for the Offshore Wind Turbine Industry: Evaluation of the Durability of Innovative Materials in Offshore Structures

Global warming derives from the emission of large quantities of greenhouse gases (ghg) into the atmosphere and cement production is one of the main processes responsible for environmental pollution. The production of eco-sustainable concretes with recycled aggregates can contribute to emissions reduction, but the development of new binders able to replace, at least in part, cement would be even more important. This paper presents some results on innovative concretes investigated in marewind project, an ambitious eu project that aims the development of a more durable concrete materials to achieve a sustainable foundation structure (lighter and enhanced durability) for an offshore wind turbine compared to the traditional solution. The results of the tests carried out on two different mixtures of eco-sustainable concretes, Alkali Activated Concrete (AAC) and Ultra High-Performance Concrete (UHPC), will allow to identify the best performing formulations in terms of mechanical and durability behaviour of the concretes in relevant environment.