The pedestrianised streets of the city of Luxembourg are constantly being monitored to enable the repair and replacement of any dislodged or damaged paving stones.
The pedestrianised streets of the capital, which were converted in the 1980s, are inevitably slowly wearing out, if only because of the growth in the number of heavy vehicles used for deliveries. Some of the paving stones that lend these cobbled streets their unique charm are being crushed, coming loose, and at risk of being damaged.
In order to maintain the quality of the paving and ensure the safety of pedestrians, the municipality regularly carries out repairs throughout the year, depending on the weather conditions. These repairs are highly localised and short-lasting.
To handle the most urgent cases, the Service de la voirie has started carrying out temporary repairs. These short-term works involve removing broken and cobblestones (and some are simply missing) and then pouring an asphalt patch.
The second phase involves dealing with larger areas comprising several of these patches. A bedding of mortar several centimetres thick is poured, the paving stones are replaced (those that are not damaged are reused) and the whole lot is then grouted. The grout takes around a week to dry.
For each repair, the Service de la voirie and the public works people work together with shopkeepers to draw up a calendar and
a schedule of works in order to minimise the disruption to local shops. .