Metodología para la clasificación y reutilización de materiales procedentes de excavación en el entorno anglosajón

Abstract

Earthworks in which lineal infrastructure is founded require an important provision of materials, whose procurement, transport and implementation represent a high economic cost. The correct classification and use of available materials on site could reduce the costs, optimize the construction programme and achieve the quality standards required. The Anglo-Saxon countries have a wide experience of classification and re-use of materials (covered by specific Design Standards) whether in the Tender, Detailed Design or Construction Stages. The Tender Stage of a project in the Anglo-Saxon world has the objective of developing a Risk and Opportunity Matrix that, properly quantified, allows an estimate of the final cost of the construction to be made. Related to the classification and re-use of materials, the matrix defines as an opportunity the use of the extracted material from excavations, and as a risk, the inability to use any materials that do not comply with the established standards. Therefore the percentages of material re-use and its classification should be estimated as exactly as possible during the Tender Stage. Furthermore, a high initial investment in geotechnical investigations could favor this task. This article is aimed to explain the classification methodology and re-use of excavated material during the tender stage based on the Anglo-Saxon design standards. This is the first time that this methodology, based on the Anglo-Saxon approach and developed from Eptisa's experience acquired in recent years, has been presented in Spain. Keywords: Methodology, Anglo-Saxon world, re-use, soils, rocks, earthworks, lineal infrastructure, improvement treatments, Tender Stage, Risk and Opportunities.