According to the standard EN1504, issues related to the restoration of concrete structures are divided into several sections, the most important of which are periodic repairs, structural maintenance instructions and restoration of damaged concrete parts due to operating conditions.
Epoxy based concrete repair
However, it is necessary to mention that in addition to increasing the level of design, implementation and supervision standards in construction projects and improving the quality of concrete construction, execution and processing conditions, some structures still need repair operations during or after construction. According to this standard, the use of materials in the non-structural category (R1 and R2) is usually limited to the elimination of surface defects, surface preparation as well as items related to the appearance of the work. Due to the applications mentioned in the design of this category of repair materials, features such as adhesion, appearance and durability are preferred to items such as mechanical resistors.
In this type of restoration, the use of cement repairers is usually recommended. Because epoxy-based repair materials, unlike cementitious materials, due to the difference in the coefficient of thermal expansion with concrete, if used in large volumes or thickness, they will face cracks or separation. Therefore, if the cement-based repair materials meet the requirements of mechanical strength and adhesion in the structure, it has a higher priority for repairing concrete sections.
This ready-made mortar with its soft texture and ductility provides the possibility of suitable troweling and easy polishing, and due to the various polymers used in its construction, it has significant adhesion to the following sections. Concrete repairer Due to its advantages such as high adhesion to various materials, no shrinkage, resistance to melting and freezing cycles, being the same color with concrete, as well as ease of implementation can be used in all projects. In addition, the use of this material for public use will reduce the cost of repair in the project.
This material is mainly recommended for general and internal uses of the building or indoor space, such as floor and wall substructures before installing various decorative materials. Other uses for this material include filling non-structural joints and cracks, intermediate cavities, and muscle contraction.
This material is used to repair porous surfaces, repair fractures of concrete or cemented sections, fill concrete roughness and level the roughness caused by error in formwork. Compared to other mortars and repair materials, concrete repairer in terms of cost of labor , Quality and ease of implementation are in good condition.
Mechanism of concrete restorative effect
Granulation of ready-made concrete repair mortar is very soft and fine-grained and selected from micronized silica, and therefore has a trowel and good dispersion properties, and due to the high percentage of cement and copolymer resin, high adhesion to the substrate. has it . This material is resistant to the penetration of liquids and corrosive substances after application and is therefore a suitable mortar to repair the damage of the desired surfaces for sealing. The presence of polypropylene fibers in the restorative structure of concrete will increase the mechanical strength of the restorative mortar as well as its reinforcement.
E.M.REPAIR concrete repair method
The surface should be clean, firm and free of grease, dust, paint, oil and loose particles.
Depending on the required efficiency and thickness of the implementation, it is recommended to add about 5 to 5.5 liters of water to each 25 kg bag. Mixing the powder with water should be done using an electric mixer (drill + blade). The bucket or container in which the powder and water are mixed should be proportional to the speed of work and the volume of mixing. Always add the powder slowly to the water and note that when the powder is added to the water, the electric mixer should be on and the mixing process should continue until a uniform and homogeneous mixture is obtained.
Be sure to moisten the surfaces under E. M. REPAIR before applying the prepared mixture.
Apply the prepared mortar with a trowel or spatula on wet surfaces.
Depending on the amount of porosity and unevenness of the applied surfaces, about 1.5 to 2.5 kg of E. M. REPAIR is required to cover one square meter with a thickness of 1 mm.
Always mix the amount of powder with water to be used in less than 20 minutes at most.
After the applied mortar is half dry, keep all surfaces moist by spraying water for at least 24 hours.
Properties and repairing effects of E.M.REPAIR concrete
High adhesion to a variety of materials
Resistant to melting and frost cycles
Same color as concrete
Ease of mixing and execution
Applications of E.M.REPAIR concrete repair
Leveling and repairing porous surfaces
Repair of cracks and fractures of concrete or cemented sections
Filling the concrete roughness and the remaining holes between the bolts
Leveling unevenness caused by formatting error
Floor and wall substructure before installing all kinds of decorative materials
Physical and chemical properties of E.M.REPAIR concrete repair
Physical state: powder
Specific weight of ready mortar: g / cm3 1.90 ± 0.1
Eun Keller: No.
E.M.REPAIR Concrete Repair Considerations
Shelf life: one year in the original packaging
Storage conditions: Away from moisture and direct sunlight
Best storage temperature: +10 to +30 degrees Celsius
Packing type: 25 kg bag
Protection and safety of E.M.REPAIR concrete repair
This substance is not in the range of substances that are dangerous and harmful to health and the environment, however, it should not be swallowed or in contact with the eyes.
It is recommended to wear masks, gloves and goggles when working with any chemical.
In case of accidental contact with skin or eyes, rinse immediately with plenty of fresh water.
See a doctor immediately if swallowed.
Please refer to the Safety Data Sheet (MSDS).
This substance is not flammable.