Concrete protection and repair systems

INDASTRO Profscreen RC50 RTi

INDASTRO Profscreen RC50 RTi

INDASTRO Profscreen RC50 RTi

Profscreen RC50 RTi thixotropic-type extra-rapid-hardening high-strength non-shrink repair compound is designed for structural repair of high-strength concretes.
Technological and easy to use
Creates a barrier at the pressure of water on a concrete structure
Protection against the effects of aggressive media

Description

A thixotropic-type extra-rapid-hardening high-strength non-shrink repair compound with polymer fibers. Profscreen RC50 RTi is used for the structural repair of concrete and reinforced-concrete structures in the shortest time possible. This product can be used both inside and outside the premises.

The product is manufactured from environmentally compatible raw materials in compliance with the technical specifications of the manufacturer.

Advantages

  • Class R4 compliant (according to the European EN1504 standard)
  • Fully suitable for repair of high-strength concrete (grades M400 and up)
  • High resistance to shrinking
  • Extremely fast curing

Scope of application

Profscreen RC50 RTi repair compound is used for the structural repair of the following types of concrete structures:

  • Load-carrying engineering structures; bridge conduits
  • Wastewater treatment plants
  • Underground engineering structures (channels, pipelines etc.)
  • Industrial structures

Technical characteristics

Grade strength, MPa, after 2 hours >20
Grade strength, MPa, after 24 hours >25
Grade strength, MPa, on day 28 60
Bending strength, MPa, after 2 hours 4
Bending strength, MPa, after 24 hours 5
Bending strength, MPa, on day 28 8
Gripping power, MPa, on day 28 1.5
Application life, min 10-15
Water consumption, l/kg 0,14-0,15
Resistance to freezing and thawing, cycles 300
Work implementation temperature, °C -10….+35
Mortar density, kg/m³ 2100
Thickness of application, mm 3-50

Brief instructions for the implementation of remedial work

Substrate preparation

The substrate must be stiff, clean, and capable of bearing the load. Particularly dense and smooth substrates that are not capable of bearing the load of the layers (e.g., dirt, old coatings, film-forming material, water-repellent materials, or cement grout) as well as damaged concrete surfaces must be pre-treated with the use of sandblasting or water jetting. The substrate must be rough, i.e., the filler must be clearly visible. The preliminarily treated substrate must be dampened for 3 hours. The surface must be damp, but it is necessary to avoid creating puddles. It is necessary to remove all the corrosion products from the concrete substrate as well as from the steel reinforcement bars with the use of a sandblasting unit. For long-term protection against corrosion of reinforcement, as well as improve the adhesion, it is necessary to apply Profscreen LC 2.5 anti-corrosive compound (link). To do this, the materials are mixed with water to a plastic consistency and applied to a slightly damp substrate with the use of a brush. At the same time, it is necessary to prevent drying the applied layer.

Mortar preparation

In order to prepare the mortar, the contents of the bag must be poured into a tank with clean water at a rate of 3.5-3.75 liters of water per 25-kg bag while constantly mixing until a homogeneous mass is obtained. The mortar must be mixed with the use of an industrial-grade mixer. The use of gravity-type mixers for mixing as well as manual mixing are not recommended. The entire bag with the material must be used for mixing. The mortar must be set aside to cure for 3-5 minutes and then re-mixed. Then, the mortar is ready for use. The prepared mortar must be used within 10 minutes. In case of increased viscosity of the mortar in the tank (within the life time of the mortar), it is necessary to remix the mortar without adding water. Do not exceed the required value for the volume of water!!! Only clean capacities, tools, and water must be used for the preparation of the mortar.

Application

The mortar must be manually applied to the prepared surface to a thickness in the range from 3 mm to 50 mm.