Stabilization of the subsided soil and increasing the bearing capacity of the Tallinn roundabout road (Kurna – Luige road section)

Recently built four-lane road showed signs of subsidence and voids under the pavement, which caused closing two lanes for traffic. Despite repeated attempts to solve the problem by using traditional excavation method, subsidence was not stopped.

URETEK technology was used to fill voids and prevent sand filling from entering between large-fraction crushed stone in the future. Works lasted for six hours and after asphalting, the road was open to traffic again.

Although the pavement was removed before performing injection, it would not have been necessary when using URETEK technology and in this case, it was done to find out the reason for subsidence for the purposes of expert assessment.