The repair compound Teknorep 300 EX(Текнореп 300 ЕХ)

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The repair compound Teknorep 300 EX(Текнореп 300 ЕХ)

One-component non-shrinking high-strength elastic mixture for vertical repair of cement-based concrete.

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Teknorep 300 EX is an one component non-shrinkable high-strength elastic repair compound based on cement, reinforced with polymer fibers.

Scope of application:

  • For filling holes after dismantling of fittings and tie screws in reinforced concrete structures
  • For the repair of concrete surfaces after removing the formwork
  • For the repair of concrete products and structures in all types of engineering structures, such as metro, highway, platinum
  • For the repair of prefabricated elements made of reinforced concrete
  • To eliminate defects on a surface with a thickness of 10 to 40 mm

Properties of concrete repair material:

  • Waterproof
  • It has high adhesion rates
  • It is resistant to sulfate and chlorine
  • Does not cause corrosion
  • It is resistant to freezing and thawing
  • Suitable for use on vertical and horizontal surfaces
  • Does not shrink
  • It is resistant to concrete carbonation
  • It has a high compressive strength
  • Does not contain chlorides
  • Easy to use
Colour Grey
Expiration date 12 months in a dry environment in a closed package. 
Packaging 25 kg bag
Application temperature + 5 °C - + 35 °C
Mixing ratio 3.5-4.5 liters of water / 25 kg of powder
Viability ≥ 20 minutes
Commissioning 24 hours
Application thickness 10-40 mm (in one layer)
Flexural strength (EN 12808-3) > 10.0 N/mm2
Adhesive strength with concrete (EN 1542) > 2.0 N/mm2
Compressive strength (EN 12808-3) > 60 N/mm2
Modulus of elasticity (EN 13412) > 20 Gpa
Shrinkage (EN 12617-4) > 2.0 N/mm2
Capillary water absorption (EN 13057) < 0.5 kg/m2*h
Chlorine capacity < 0,05%
Fire resistance A1

Consumption table: 

Teknorep 300 EX Density of the compound (kg/l) Consumption of powder per 1 mm/1 m2 (kg)  Volume of water for mixing (l)
25 kg craft bag 2,06 1,8 3,5-4,5
  • Before applying the material, the surface should be cleaned of any types of oil, rust, detergents, dirt and other substances that prevent setting.
  • Before using Teknorep 300 EX, the surface should be moistened.
  • To prepare the working solution, pour 3.5 - 4.5 liters of clean water into a clean container.  Pour the Teknorep 300 EX powder (25 kg) into a container with water and use a low-speed mixer to knead the composition for at least 5 minutes until a homogeneous mass is obtained. Leave the resulting compound for 3 minutes, then re-mix the compound for 2 minutes. Do not add water to the already prepared compound.
  • The compound should be applied to the surface with a spatula. If necessary, apply a layer with a thickness of more than 40 mm, you should perform the work in several layers.
  • When working on old concrete surfaces, you should first use the Tekno AD primer.
  • When using Teknorep 300 EX in high wind conditions or other harsh environmental conditions, it is recommended to use Teknokur 100 as a curing material to prevent cracking of the surface.

Notes:

  • For outdoor use,  it is necessary to protect the surface from moisture, sunlight and frost during the first 3 hours of solidification of the compound.
  • When used at a low temperature, the lifetime of the compound increases, at an elevated temperature it decreases.
  • When used in conditions of low temperature, it is necessary to use warm water, at high temperature – cold water.
  • It is not recommended to use in contact with liquids whose pH value is lower than 5.5.
  • Work should be carried out in compliance with safety and hygiene standards, using a mask and glasses.
  • The tools and equipment used must be washed immediately after use.

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