REPIFIX POWER WRM 525
High strength, fiber reinforced, repairing mortar R4
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REPIFIX POWER WRM 525
Description
Premium quality and high strength, fiber reinforced, one-component, repairing mortar for concrete, type PCC R4, based on EN 1504-3.
Application Fields
- It is suitable for repair and restoration of old and new, reinforced or unreinforced concrete.
- Use in large construction projects such as docks, bridges foundations, columns.
- Marine/sea structures.
- Water and sewage treatment constructions.
- Restoration of damages on concrete deriving from constructional defects, wear, impact, etc.
Advantages
- Zero shrinkage with excellent relevance to concrete.
- High strengths.
- Applied either molded with spatula or launch.
- The thickness of the mortar can reach up to 4cm.
- Resistance to humidity and vapors.
- Resistance to ageing.
- Resistance to oils and solvents.
Application Steps
Firstly, make sure that the surface is clean from unstable materials and corroded or carbonated parts of concrete using a hammer or chisel or a sand blaster. In case of existing reinforcement, this needs to be exposed peripherally in order for the material to penetrate and roughen the concrete surfaces it will come in contact with.
Step 2Remove all residues with water under pressure and remove any excess water. It is recommended to pre-coat the substrate and the metallic reinforcement with the primer WRM 510 before the application of the product, in order to ensure the optimum adhesion of the material to the substrate. The substrate must be slightly wet.
Step 3In a clean container add 4.6-4.75 litres of clean water and gradually empty the content of the bag (25Kg) while mixing continuously, in order to produce a homogenous mass of mortar.
Step 4Leave the mixture to mature for 5 min and mix again briefly. It is also recommended to periodically mix the mixture for as long as the repair lasts. Do not add additional water to correct the workability of the mortar. This shall lead to a decrease of resistances and to the increase of its shrinkage.
Step 5Wherever necessary cast the part of concrete to be repaired and then pour the WRM 525 repairing mortar taking care that there is a careful layering and covering of all voids. Make sure that all the air pockets are removed and there are no voids. The thickness of the mortar can reach up to 4 cm.
Step 6To obtain uniform strengths and to avoid crevices the final surface must remain wet for the first few days following the application and rapid drying must be prevented by way of a suitable wet cover. Special care must be taken during the summer months, and for surfaces exposed to strong sun. The product must be applied when the ambient temperature is between +5oC and+35oC and not under rain. When the temperature is high, the strength develops faster, while the workability of the material decreases. In low temperatures, the strength development is delayed. The wooden casts must be well saturated but without forming water pools.
Storage
The product is packaged in 5Kg plastic bags and in 25Kg paper valve bags It is stored sealed in a dry environment with temperature above 0oC for 12 months from the production date.
