Fosroc Renderoc HB45 is a high performance, fibre reinforced, high build, high strength concrete reinstatement mortar, applicable by hand or wet spray, suitable for repair methods 3.1, 3.3, 4.4, 7.1, 7.2 as defined by BS EN 1504-3.
Specifically developed for the repair of columns and beams, but because of its medium fresh wet density, is also suitable for soffit repairs
For the reinstatement of reinforced concrete where low permeability characteristics are required and where higher compressive strength is a consideration
Where compatibility with lower strength concrete is required, Renderoc HB30 should be used.
Supplied as a ready to use blend of dry powders requiring only the site addition of clean water to produce a highly consistent, lightweight repair mortar
Based on Portland cements, graded aggregates lightweight fillers, fibres and chemical additives which provide a mortar with good handling and finishing characteristics while minimising water demand
Exceptional handling characteristics - easy to finish
High-build applications possible while maintaining higher compressive strengths — fewer layers
Frequently obviates the need for formwork
Polymer-modification provides extremely low permeability to water, carbon dioxide and chlorides
Exceptional system of shrinkage compensation provides long-term dimensional stability
One component, pre-bagged to overcome site-batched variations
Contains no chloride admixtures
Suitable for use with cathodic protection systems
Uses
Specifically engineered for vertical and overhead repair work
Can be applied in sections up to 80 mm thickness in vertical locations and up to 70 mm thickness in overhead locations in a single application without formwork
Thicker sections can be achieved by the use of formwork or can be built up in layers
Deep pockets can sometimes be filled in a single application dependent on the configuration of the pocket and the volume of exposed reinforcing steel
Can be quickly and efficiently applied by the wet spray technique
Application Notes
Reinforcing steel can be primed with one full coat of Nitoprime Zincrich Plus prior to application
Concrete can be primed by scrubbing Renderoc Primer slurry into the surface
In exceptional circumstances, e.g. where a substrate/repair barrier is required or where the substrate is wet or likely to remain permanently damp, Nitobond EP bonding aid should be used
A forced-action mixer is essential. Mixing in a suitably sized drum using an approved Renderoc Mixing Paddle (MR4) with a slow speed (400/500 rpm) heavy-duty drill is acceptable for the occasional one-bag mix
Apply by gloved hand or trowel
Additional build-up can be achieved by application of multiple layers. The surface of the intermediate layers should be comb scratchkeyed and cured with Nitobond AR
Renderoc HB45 can be quickly and efficiently applied by the wet spray technique. In circumstances where large areas of repair are required, the rapid placement and higher build attainable by this method offer economic advantages over hand-trowelling. The resultant repair also offers a generally more dense compound with enhanced mortar/substrate bond characteristics
In cold conditions down to 3°C, the use of warm mixing water (up to 30°C) is advisable to accelerate strength development. At ambient temperatures above 35°C, the material should be stored in the shade and cool water used for mixing
The use of Nitobond AR, sprayed on to the surface of the finished mortar in a continuous film, is recommended. A low pressure atomising sprayer is essential for applying the Nitobond AR
Large areas should be cured as trowelling progresses (0.5m2 at a time) without waiting for completion of the entire area
The Dekguard range of protective, anti-carbonation coatings products may be applied over the repair area without prior removal of the Nitobond AR curing membrane
Should be removed from tools, equipment and mixers with clean water immediately after use. Cured material can only be removed mechanically
Yield: Approximately 14 litres / 25 kg bag (approximately 1.4 m² at 10 mm thickness)
The material should not be applied at less than 10 mm thickness
Note: the actual yield per bag will depend on the consistency used. The yield will be reduced if the material is applied by a spray technique.
Limitations
Should not be used when the temperature is below 3°C and falling
Free-fall mixers must not be used. Mixing of part bags should never be attempted
Due to the nature of Renderoc HB45, the product should not be used in areas subjected to traffic (in these circumstances, Renderoc Sshould be considered)
Should not be exposed to moving water during application
Exposure to heavy rainfall prior to the final set may result in surface scour
Renderoc HB45 is non-flammable
As with other ‘one pack’ repair mortars, Renderoc HB45 may exhibit satisfactory handling characteristics even though inadequately mixed. This will result in a significantly lower level of performance or possible failure. It is therefore essential that mixing instructions are strictly adhered to with particular emphasis on the quantity of water used and the time of the mixing operation
Product Details
8010-912780
Data sheet
Manufacturer
Fosroc
For Use By
Professional Use
For Use On
Concrete
Application Method
Gloved hand, trowel, spray
Single, Two or Three Pack
Single
Pack Size
25KG
Minimum Applied Thickness
10mm
Maximum Applied Thickness
70mm (Overhead) 80mm (Vertical)
Coverage
Approximately 14 litres / 25 kg bag (approximately 1.4 m² at 10 mm thickness)
Recommended Thinner/Cleaner
Water
Flexural Strength (at 20°C)
7.5 MPa @ 28 days
Shelf Life (from date of manufacture)
12 months
Resistance to chemicals
The low permeability of Renderoc HB45 severely retards chemical attack in aggressive environments. The cured mortar is impermeable to acid gases, waterborne chloride ions and oxygen.
Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.
Fosroc Renderoc HB45 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.
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