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weberep 331 HCS

formerly "Conrep.331 HCS"

weberep 331 HCS
weberep 331 HCS

Product benefits

  • Non-shrinking
  • Very High strength
  • Good resistance to sea water and to high-sulphate water

Non shrink high strength thixotropic repair mortar

weberep 331 HCS is a ready to use fiber-reinforced mortar. It is made of sand (reconstituted grain size range), special cement, fibres, and special additives that provide special properties: non-shrinking, thixotropic, very high strength, excellent bond to rough and damp surfaces, compactness; its closed porosity slows down carbonation. It has low permeability and is extremely durable. The formulation of weberep 331 HCS provides excellent strength, making it a high quality all purpose mortar for different applications including repair of high strength concrete

Product Features

Scope of use

  • Repair of concrete surfaces, honeycombing, edges of steps and all types of load bearing situations.
  • Restoring the structure of damaged construction: columns, slabs, vault, mats and dam overflows.
  • Reinforcing of weakened structures such as balconies, pedestals and cornices.


Active ingredients

Grain size
Mixing water


Fresh Density(Kg/m³)

Compressive Strength:
1 day (BS EN 196-1)
7 days (BS EN 196-1)
28 days (BS EN 196-1)
Flexural Strength:
1 day (BS EN 196-1)
7 days (BS EN 196-1)
28 days (BS EN 196-1)
Pull Off Stress:
28 days (BS 1881 Part 207)
Length Change:
28 days (ASTM C 157-03)
Tensile Strength:
7 days (BS 6319 -7- 1985)
28 days (BS 6319 -7- 1985)

hydraulic binders, synthetic fibres, without any chlorides or metal particles
Grey Powder
0 to 2.5 mm
7.5 liters / 50 kg bag
3.75 liters / 25 g bag
25 liters / 50 kg bag
12.5 liters / 25 kg bag
2230 (BS 1881:83)
5 to 50 mm in one coat

30 N/mm²
52 N/mm²
70 N/mm²

4.5 N/mm²
5.5 N/mm²
6.5 N/mm²

> 1.3 N/mm²


1.8 N/mm²
3.8 N/mm²

Applicable standards

BS EN 196 Part 1
BS 1881 Part 207
ASTM C 157-03
BS 6319 – Part 7- 1985
BS 1881: 83


12 months after manufacturing date in original and non-open packaging, under cover, in dry condition, away from humidity, protected from extreme temperatures and direct sunlight.


Send or download the documentation

You can either send the documentation to an email address, or download it.

Instructions for use

Product preparation

Mix a 50 kg bag weber.rep 331 HCS with 7.5 litres of clean water until a smooth paste is obtained (mix 3.75 lit. of water with a 25 kg bag)

Product application

Substrate preparation

weber.rep 331 HCS may be applied on sound concrete, masonry, rock or similar materials.Remove damaged concrete and laitance by chipping with a pick or cold-chiseling to get a rough surface. The area must be surrounded by clean edges. Do not feather edges. The surface must also be free from any trace of grease or oil. Brush or scrape corroded steel with a metal brush, or sand it to remove all rust particles. Remove dust from all surfaces to be fixed. For an optimal protection of steel, apply weber.rep 370 PF by brush prior to weber.rep 331 HCS. Saturate the surface with water by copiously spraying just before application, and if possible, 6 hours before application as well.

Product application

weber.rep 331 HCS can be applied:

  • Manually with a trowel
  • By using a dry or wet spraying machine
  • Or by pumping

weber.rep 331 HCS must be used within one hour from mixing. Re-mixing with an extra amount of water is forbidden. After application, protect the surface by using a curing compound like cure WH or cure Y 40 by covering with properly secured plastic sheeting. Ideal application temperature is between + 5ºC and + 35ºC. If the application temperature is higher than 35 C, make sure to use cool water to keep the mixed mortar temperature below 30 ºC.



Environmental and Safety

Safety precautions

The product contains cement powders which, when mixed with water, release alkalis that could be harmful to the skin. It is preferable that the application be done in a ventilated area, and to wear protective gear for hands, eyes and respiratory system and to avoid breathing of the dust. Splashes on the skin should be washed away by cleaning thoroughly with soap and water. In case of contact with eyes, wash thoroughly with clean water and seek medical attention. If swallowed, do not induce vomiting and seek medical attention. The product is non-flammable.


For thickness more than 50 mm, it is recommended to apply Conrep.331 HCS in 2 layers. When the first coat is applied it must be directly roughened to increase bonding with the second coat.


While the company guarantees its products against defective materials, the use and application of these products are made without guarantee since the conditions of their application are beyond its control. It is recommended to verify with the company that the product is suitable for the intended use, and that this Data Sheet version is the latest one. The company may modify it without prior notice. Technical characteristics are listed for guidance only. For more information, please contact the company’s office in your location.


The information included on this Technical Data Sheet is the sole property of SODAMCO Holding. The unauthorized disclosure, use, dissemination or copying (either whole or partial) of this data sheet or any information it contains, is prohibited and subject to legal pursuit.

Available packaging

Lebanon25 kg, 50 Kg
Syria25 kg, 50 Kg
Jordan25 kg, 50 Kg
KSA25 kg, 50 Kg
UAE25 kg, 50 Kg
Qatar25 kg, 50 Kg
Kuwait25 kg, 50 Kg
Oman25 kg, 50 Kg