One-component structural repair mortar, reinforced with fibers and coarse-grained aggregates, which meets the requirements of class R3 of UNE-EN 1504-3.
Mixing proportions: 2,75 liters of water per 25 kg bag. On concrete surfaces, remove weak, damaged and deteriorated concrete and, where necessary, sound concrete, by suitable mechanical means or high pressure water jet. On armor, surfaces should be prepared using high pressure water or abrasive blasting techniques. Although a primer is not normally required on a surface prepared with adequate roughness, a previous surface wetting is necessary. Do not let the surface dry before applying the repair mortar. When an adhesion bridge is necessary, apply MonoTop-910 or with the same product (MonoTop-618), make a grout and press on the support. In both cases, the subsequent application of the mortar must be done "fresh on fresh". Where a barrier coating on the reinforcement is required, apply two coats of MonoTop-910 around the entire perimeter of the reinforcement.
Regeneration of concrete. Regularization of concrete surfaces. Repair of reinforced or prestressed concrete structures, damaged by corrosion or other causes. Suitable for concrete repair work (Principle 3, method 3.1 and 3.3 of UNE-EN 1504-9). Repair of chipping and concrete damage in buildings, bridges, infrastructure and superstructures. Suitable for structural reinforcement of concrete (Principle 4, method 4.4 of UNE-EN 1504-9). Increase in the bearing capacity of concrete structures through the addition of mortar. Suitable for the conservation or restoration of passivation (Principle 7, method 7.1 and 7.2 of UNE-EN 1504-9). Increase of the covering with additional mortar and replacement of contaminated or carbonated concrete.
For 1 liter of fresh mix: 231 g of water and 1,835 g of SIKA MonoTop 618, which is equivalent to a consumption of SIKA MonoTop-618 of 1,835 kg / m2 and mm thick. It can be applied by traditional manual methods or by using wet spray equipment. When a bonding bridge is needed, make sure it is still fresh when the repair mortar is applied. When it is applied manually, press the mortar with a trowel strongly on the support. Protect freshly applied mortar from early dewatering with proper curing methods. Concrete must be free of dust, poorly bonded, surface contaminants, and materials that can reduce bond or prevent suction or wetting of repair materials. In steel reinforcement, remains of rust, mortar, dust, and other materials that may prevent adhesion or contribute to corrosion must be removed.