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Single-component, polymer-modified, high build cementitious mortar, designed for concrete repairs to facades where high compressive strength is not the major consideration. It requires only the addition of clean water to produce a lightweight, low permeability, medium strength mortar suitable for both soffit and vertical repair situations.
- Lightweight, medium strength mortar for soffit and vertical repairs
- Complies with BS EN 1504-3 as an R3 mortar
- High build mortar to repair building facades
- High build properties - up to 75mm vertically and 50mm overhead, without formwork depending on size of the repair
- Achieves 30 N/mm2 in 28 days
- Easy to apply, with excellent application properties
- Low permeability to water, carbon dioxide and chlorides
- Contains fibres and spray dried acrylic polymer
Description
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Preparation
Concrete substrates must be adequately prepared by use of scabbing, needle gunning or other means, as appropriate. Oil and grease must be removed by steam cleaning together with suitable detergent. Any contaminated concrete must be removed. All damaged concrete should be cut back to a sound surface and at least 15mm behind any exposed reinforcement. The edges of the repair should be cut perpendicular to the surface of the repair.
Note: Disc cutting is not recommended due to hazardous respirable crystalline silica that can be produced.
New concrete must be at least 14 days old.
Steel substrates should be grit blasted to equivalent to BS 7079-A1 and degreased immediately prior to application. Where corrosion is absent, wire brushing to a clean, bright surface may be adequate. Care must be taken not to polish the rust.
Note: Preparation of both concrete and steel must achieve a clean, sound, roughened surface.
Mixing
A low-shear, forced-action mixer must be used e.g. Mixal Mixer or Creteangle. Hand mixing of the mortar is not recommended.
Mix for 2-3 minutes from adding the powder to the water.
Over mixing will entrain air and reduce compressive strength. Do not over mix.
Water addition is 2.4 to 2.7 litres of clean water per 20kg bag. Start at 2.4 litres and adjust as required upwards to 2.7 litres.
Do not add more than 2.7 litres of water.
Application
For steel substrates apply one full, unbroken coat of Webercem bondcoat, ensuring the back of the cleaned reinforcing bars are coated.
For prepared concrete, use a stiff brush to scrub the slurry well into the surface.
Apply the mortar to the substrate whilst the bonding slurry is still tacky and compact well into place, ensuring no air is trapped.
The minimum application thickness is 20mm. Where very thick sections are required multiple applications may be necessary. Intermediate surfaces, should be scratched to give a good mechanical key. Successive applications repairs requires the use of Webercem bondcoat.
These results were obtained under laboratory conditions. Batch to batch results may fluctuate due to common cause variation.
Technical Data
| EN1504 | All tests carried out at 20°C unless otherwise stated | ||
|---|---|---|---|
| Performance characteristic | Method | Requirement | Result |
| Compressive strength | EN 12190 | ≥25 MPa | ≥30 MPa |
| Chloride ion content | EN 1015-17 | ≤0.05 % | 0.01% |
| Adhesive bond | EN 1542 | ≥1.5 MPa | ≥1.5 MPa |
| Carbonation resistance | EN 13295 | dk ≤ control concrete | dk ≤ control concrete |
| Elastic modulus | EN 13412 | ≥15 GPa | ≥15 GPa |
| Thermal compatibility Part 1 Freeze-thaw | EN 13687-1 | Bond strength after 50 cycles ≥1.5 MPa | ≥1.5 MPa |
| Capillary absorption | EN 13057 | ≤0.5 kgm-2h-0.5 | ≤0.5 kgm-2h-0.5 |
| Reaction to fire | EN 13501-1 | Declared class | A2-s1, d0 |
| Coefficient of thermal expansion | EN 1770 | Declared value | 2 x 10-6 /°C |
Product Details
11504-1015616
Data sheet
- Manufacturer
- Weber
- For Use By
- Consumer Use
- Interior / Exterior Use
- Interior & Exterior
- For Use On
- Vertical Concrete Walls
Concrete
Steel
Soffits
Concrete Decks
Steel Decking - Application Method
- Brush
- Single, Two or Three Pack
- Single
- Pack Size
- 20KG
- Shelf Life (from date of manufacture)
- 12 months
- UN Number
- N/A
- Base Type
- Acrylic
- Suitable For Use On
- Soffits
- Suitable For Use On
- Steel Decks
- Suitable For Use On
- Concrete Decks
- Suitable For Use On
- Vertical Concrete Walls
- Suitable For Use On
- Concrete
- Suitable For Use On
- Steel
- Application Method
- Brush
- Manufacturer
- Weber
- Components
- 1K
- Usages
- Repair
- Product Usage Type
- Mortar
- Yield
- 13L per 20KG bag
Questions
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IMPORTANT SHIPPING & DELIVERY INFORMATION
Weber Webercem HB30 is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.
Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.
Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.
All delivery costs below are excluding VAT