ABSTRACT
ABSTRACT: High Speed Train (HST) viaducts have very heavy concrete decks due to the live loads required for such superstructures. In Spain, in order to perform the construction of such viaducts from 2004-2005 on, very strong MSS were designed and supplied to the Construction Industry. In this article we will present their utilization building the largest HST arch bridges in the World – Viaducto del Rio Tajo (central span 324 m) and – Viaducto de Almonte (central span 384 m) – where MSS were used for the construction of the multi-span access viaducts with spans of 60 m and 45 m repectively, and were also used to build the decks over the arches.
