Product Data Sheet Safety Data Sheet Show all documents

LANKO 731 STRUCTURE REPAIR

FIBRE-REINFORCED REPAIR MORTAR

A ready-to-mixed cement based which is designed for repair the damage on structure.

• High application thickness up to 35 mm.
• High compressive strength.
• Excellence bonding.
• Good workability.
• Fast setting.
Where to buy
Product Data Sheet Safety Data Sheet Show all documents

Usage

• Repair of concrete surfaces: spalling, honeycombing.
• Concrete restructuring: pillars, slabs, posts and spillways, etc...
• Reinforcement of weakened structures e.g. balconies, overhangs, cornices.
• Treatment of chambers and seams prior to waterproofing.
• Treatment of passive cracks.  

Advantages

• High application thickness up to 35 mm.
• High compressive strength.
• Excellence bonding.
• Good workability.
• Fast setting.

Packaging

5 kg bucket

25 kg bag

Colour

Grey powder

Product Details

Product Information

Composition

Hydraulic binder, mineral filler and specific additives.

Shelf life

12 months from the date of production if stored properly in undamaged, original, sealed packaging.

Storage conditions

Store in dry and cool conditions, protected from direct sunlight.

Density

1.1 - 1.3 kg/L

Maximum grain size

0 - 2 mm
Technical Information

Compressive strength

1 day

7 days

28 days

≥ 20 MPa

≥ 30 MPa

≥ 45 MPa

Tensile strength in flexure

1 day

7 days

28 days

≥ 5 MPa

≥ 6 MPa

≥ 8 MPa

Application

Application Information

Mixing ratio

4.25 to 4.5 litre water per bag 25 kg

Ambient air temperature

+10°C to +35°C
Consumption

Consumption

2 kg / sq m / 1 mm
Application steps

MIXING

1. Mix LANKO 731 STRUCTURE REPAIR with 4.25 - 4.5 l of clean water (clean water 17 - 18 % per mortar weight).
2. Mixing should be carried out as follows: By machine mix with recommended speed at 500 rpm.
3. Mixing time: at least 3 minutes or required consistency is obtained.
4. Leave the mixture to stand for 1 - 3 minutes.
5. Do not add water after mixing.

APPLICATION

1. Apply a first coat of LANKO 731 STRUCTURE REPAIR with a trowel, pressing firmly to ensure effective bonding, building up to required thickness in one single operation. A maximum thickness is 35 mm.
2. The case of repairing the corner of the concrete column, use 2 trowels on each side of the corner to prevent over use of mortar on the corner.
3. Apply additional mortar to obtain the desired overall thickness. Smooth the surface with a trowel or float the repaired surface for a smooth finish.

CURING TREATMENT

After finishing, protect the mortar from drying out by applying LANKO 361 CURE.

 

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