Professional, fiber-reinforced, structural repair mortar (Thickness: 5-50 mm)

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The Name of the Product     : LANKOREP 731

Product Group               : Professional, fiber-reinforced, structural repair mortar (Thickness: 5-50 mm)

Description                     : Unary professional repair mortar specially designed and manufactured with cement

                                        and quartz sand, reinforced with fibers, non-shrink, resistant to carbonation due to

                                        low surface porosity.

Packaging Type             : In 25 kg craft bags

Color                               : Gray

Standard                         : TS EN 1504-3 – Class: R4 “Unreinforced Use”

Areas of Use                  :

For Repair of Concrete Elements: For filling up of parts that have flaked on the surface and large pores, repair of corroded parts on the steps of stairs, for repair of precast elements

For Filling Works of Concrete Elements: For filling works to be carried out on beams, columns, coating, concrete pillars, sections of dams exposed to cavitation, slip ways, piers, etc.

For Reinforcement of Concrete Elements: Repair and reinforcement of damaged parts of balconies, parapets, eaves, corroded concrete elements, concrete elements damaged after an earthquake, and parts such as waterways and joints before waterproofing.

Characteristics/Advantages : Can be applied to a thickness of 5 to 50 mm in one single application and with

a total maximum thickness of 100 mm.

Thixotropic, does not sag on walls and overhead works.

Ensures perfect adherence.

Has high initial and end mechanical strength.

Has high resistance to sea water, sulphate-rich waters, frost and corrosive salts.

High density. Non-toxic.

Ministry of Public Works Position No        : 04.613/3B

Technical Specifications   :

Appearance                                                : Gray, ready-to use binding powder made of synthetic fibers and

                                                                     that does not contain chloride and toxic substances

Particle Dimensions                                   :0 – 2 mm

Dry Unit Weight                                         :2000±100 kg/m³

Operation Time (At 20°C)                        : 45 minutes

Compressive Strength (28 days)               : > 60 N/mm²

Flexural Strength (28 days)                       : > 8 N/mm²

Adhesive Strength (28 days)                     : >2 N/ mm²

Elasticity Module                                       : 21 GPa

Capillary water absorption                        : ≤ 0.5 kg/ m²h^0.5

Application Thickness                                : 5-50 mm (in one application)

Application Temperature                          : (+5°C) - (+35°C)

Mixing Ratio                                               : 4.25-4.50 lt water / 25 kg powder                                                                                     

Fire Reaction                                              : *European Class A1

* Without requiring the samples to be tested, in accordance with decision no. 2000/605/EC                                                                                                                  

These figures are provided for temperatures between +23±2 ºC and for 50±5% relative humidity.

Surface Preparation                                           :

• In order to obtain a smooth surface, remove all loose and damaged concrete formed on the surface with the help of cutter or leveler.
• All loose concrete parts around the concrete reinforcement should be cleared off and more empty space should be obtained in order to apply the product behind and around corroded reinforcement parts.
• The surface areas to be repaired should be clearly selected.
• Rust gathered on the reinforcement should be cleaned by scraping and brushing off or by sandblasting.
• The surfaces onto which this product will be applied to should be clear of all grease, dust and dirt before commencing the application.
• Dampen the surface before application.
• If reinforcement parts are to be protected with a mortar less than 10 mm thick, in order to protect such iron bars from corrosion, Lankorep 731 and Geser Latex should be mixed and applied.

Application                :

• Slowly add 25 kg’s of Lankorep 731 to 4.25-4.5 liters of water in the mixing container and mix with a slow-speed mixer. Operation time at 20ºC is around 45 minutes after mixing.
• Lankoprep 731 should be applied with a trowel and in order to ensure perfect adherence, should be tightly pressed. For thick applications, apply more than one layer and in order to ensure adherence between layers, follow the procedure above. The repaired area should be leveled with a trowel.
• Do not add water to fresh mortar during application.
• For application to larger areas, the mortar may be applied by spraying.

Consumption             : 2 kg/m² (When applied at a thickness of 1 mm)

Storage Life   :

The expiry date is 8 months from the date of production provided that it is stored in sealed (unopened) original package and not subject to direct sunlight and frost and with maximum 8 times piling.

Safety Precautions/Warnings:

• Use between +5 Cº and +35 Cº.
• No foreign substance may be added to the prepared mortar.
• The expired mortar should not be re-used by mixing with water or dry mortar.
• Do not apply under direct sunlight.
• Do not apply on surfaces subject to sunlight for prolonged periods or that are very hot or frozen.
• Only use on clean, sound-resistant surfaces free of loose materials.
• Effective cracks should not be repaired.
• The surface should be dampened before the application.
• In order to prevent the mortar from drying too fast, apply Gesercure R1.
• Do not inhale the dust of the product since the material is cement based; avoid contact with the skin and eyes.
• View Product Safety Data Sheet for more information about health and safety titles.

Hazard Warnings:

R 36/38     : Irritating to eyes and skin.

Safety Warnings       :

S 2             : Keep out of the reach of children.

S 28           : Wash with plenty of water in case of contact with the skin.

S 36/37/39 : Use protective clothing, gloves, goggles/mask while working with the product.

Xi : Irritant

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