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The Geotechnical Area of the General Direction of Highways of the Government of Spain asked CEDEX for technical assistance for the study of pathology being produced by the roadway in Santander direction of the A-8 highway, next to the town of Reocín, in which there were several areas in which seats were periodically produced on the pavement of the highway. The seats, sometimes reach up to 1 m deep. Until that moment, when a process of evolution of seats was observed, it was acted by means of the execution of drills in the road through which a very viscous cement grout was introduced by gravity. On February 2016 CEDEX issued a report on the “Seat of the road to Santander on the A-8 motorway, next to the town of Reocín”. It summarizes the damage caused by adverse weather conditions from 2011 to 2015, years in which several actions had to be carried out with the aim of reinforcing several roads to restore the safety and stability of the road for users. Several actions are shown and established to solve the problems that have occurred, prevent emerging risks and increase the resilience of roads in the operating phase. This report concludes with the solution that was subsequently adopted, in our specific action, through the execution of two micropiled slabs.
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