PROBLEM

Over the years, a concrete slab not protected by a membrane, or whose membrane has been damaged, is subject to major de-icing salt infiltration, which corrodes the reinforcing steel located in the concrete core. This corrosion induces expansion of the steel until the concrete fractures in layers (delamination).

Beyond having an appearance of neglect, the concrete quickly loses its structural capacity, which compromises the well-being and eventually safety of the users.

INDICATIONS

When the indications become very apparent (spalled concrete exposing the rusted steel structure - photo 01), the deterioration process is, unfortunately, well under way. Calcium spots (efflorescence) and the rust on the concrete (photos 02), indicates the need to intervene. You can reduce the maintenance costs of your parking garage by having Tro-Chaînes examine the structure, as a preventative measure, to evaluate the extent of corrosion and delamination. A minor correction at this stage may stop the deterioration process.

SOLUTIONS

Taking into account the deterioration progress, Tro-Chaînes presents various solutions ranging from minor repairs to the complete reconstruction of the slab. All slab repairs or rebuilding include installation of a waterproofing membrane that will prevent de-icing salt infiltration, thereby protecting the surface for many years to come.