Objective:
Guarantee the integrity and the perfect usage state, prolong and keep the useful life and protect against aggressive agents.
Problems:
Armature corrosion, disaggregation, staining, infiltration, fissuration, etc.
Causes:
Wind and/or water erosion, abrasion by impact, overcharging, fire action, chemical products attack, alkali-aggregated reaction (expansive gel that is formed from the reaction of cement with aggregated), etc.
In the constructive process we also find causes for concrete problems such as: Incorrect positioning of the armatures, concrete placement failure, inadequate vibration, insufficient curing, poor or low quality material usage.
The concrete corrosion is one of the main causes of the problem on concrete structures. The effect of acid gases present in the atmosphere (carbon dioxide) and chloride ions (sea atmosphere) are the main agents causing this corrosion.
Specification:
Each element that will form the repair system may suffer variations according to what was diagnosed. It is necessary to select a repairing method for each kind of problem:
·Superficial repair applied manually
·Superficial repair applied by projection
·Pumped deep repair
·Deep repair launched by gravity
·Injection of fissures
Area preparation:
After the corrosion diagnosis, the preparation of the surface that will receive the treatment is essential. Therefore the following steps shall be followed:
1) Delimitation of the area to be repaired
2) Removal of the deteriorated lay
3) Cleaning of the ironware section to remove the corrosion
4) Protection painting on the ironware and its replacement when necessary Denverprimer Zinc.
5) Application of adherence bridge Denverfix/Acrílico/Denverpóxi/Denverpóxi Max
6) Application or repair mortar Denvertec 700/Denvergrout/denvergrout Max
7) Application of Denvercura curing pellicle
8) Application of plaster Denvertec 600
9) Application of protection painting Denverniz line Paints and Varnishes
Denver Impermeabilizantes has other products related to the repairing and protection processes. The line still includes:
·Sealants
·Waterproofing systems
·Anchorage systems
·Special graute products
·Additives and adhesives