Author(s): Fortunato, Eduardo ; Roque, António José ; Correia, A. Gomes
Date: 2023
Persistent ID: https://hdl.handle.net/1822/89008
Origin: RepositóriUM - Universidade do Minho
Subject(s): Inert Steel Aggregate for Construction (ISAC); Long-term performance; Mechanical properties; Structural behaviour
The use of alternative materials, in particular industrial by-products and waste materials, in the construction of transport infrastructures and geotechnical works, has been promoted across the world. Nonetheless, considering that, in most situations, the application of some of these materials is fairly recent, little information is available on the long-term performance of the infrastructures in which they were used. This work mentions some characteristics of the Inert Steel Aggregate for Construction (ISAC). It presents some results related to the evolution in the surface characteristics and the structural behaviour of a field trial built on a road section in Portugal. ISAC was used in the embankments and pavement layers. The visual inspection, the results of the mechanical tests performed, and the values of the settlements measured on the surface markings about ten years after the section is open to traffic led to conclude that the pavement in the zone where ISAC was used as a construction material is, in general, in a better condition and presents better structural performance than the adjacent areas built with natural materials. The embankment's maximum settlements in the areas with ISAC were similar to the ones observed in the adjacent areas.
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