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Ronacrete RonaBond HB40 Ultra Rapid
Ronacrete RonaBond HB40 Ultra Rapid

Ronacrete RonaBond HB40 Ultra Rapid

RON10464
RON10464

High build concrete repair mortar for vertical and overhead surfaces where ease of application is as important as strength.

  • Rapid set and strength gain - high build repairs to 75mm
  • Low temperature use - waterproof and frost proof
  • Smooth surface finish prior to application of protective/decorative coating
  • Use for structural concrete repair, dubbing out
  • High strength, monolithically bonded mortar - excellent for thick section soffit work
  • Use with Ronacrete Rapid Primer
  • Ronacrete RonaBond HB40 Ultra Rapid - For professional and industrial use

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Size
£72.72(incl. VAT)
£60.60(ex. VAT)
Quantity
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Available for Delivery (See Delivery Options Below)

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Description

RonaBond HB40 Ultra Rapid mortar is used for repairing concrete on vertical and overhead surfaces where ease of application is as important as strength.

RonaBond HB40 Ultra Rapid can be applied in relatively thick section to walls and soffits and, depending on the nature of the repair, in layers up to 75mm depending on size and orientation. RonaBond HB40 Ultra Rapid is suitable for use at lower temperatures, minimum 2°C. Multiple layers may be applied in a single day depending on temperature.



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Features & Benefits


  • Rapid set and strength gain
  • Multiple layer application in 1 day depending on temperature
  • Low temperature use
  • High build repairs to 75mm
  • Ease of application
  • Prepacked for control and convenience
  • Waterproof
  • Frost proof
  • Smooth surface finish prior to application of protective/decorative coating
  • High strength, monolithically bonded mortar
  • Use for structural concrete repair, dubbing out
  • Excellent for thick section soffit work



Preparation of Concrete and Steel


All concrete identified for removal must be broken out to ensure that repair materials are applied to a sound and stable substrate and that the minimum mortar thickness can be applied throughout. Repair edges must be saw cut at an angle of 90 degrees to the plane of the concrete, to avoid feather edging.

Reinforcing steel in the repair area must be exposed to its full circumference, until uncorroded steel is visible, to a sufficient depth for adequate cleaning of the bar, Loose rust and scale must be removed.

Cover to reinforcement must be ≥15mm to ensure adequate protection of steel and prevent reflective cracking.

Corroded steel must be replaced where necessary.

All removal of concrete and steel must be carried out in accordance with the specification.

When repairing chloride contaminated concrete the method used to prepare and prime surfaces may differ - consult Rawlins Technical on 0113 2455450 (option 2) or send a message to [email protected].

All surfaces must be cleaned to remove loose dust, debris and surface contamination which may prevent adhesion of the repair mortar to concrete and steel. Concrete must be clean and prepared with a scabbler or needle gun.



Wetting and Priming


Following preparation of concrete and steel, thoroughly wet all concrete surfaces to be repaired with clean water to satisfy concrete porosity. Remove free water immediately before priming.

Brush apply Ronacrete Standard Primer to the steel and allow to become tacky, not dry.

When the priming coat on steel is tacky, brush a single coat of the same primer on to the damp concrete and a second coat on to the steel. Ensure that the first priming coat applied to the steel is not removed during the application of the second coat, or scatter kiln-dried sand into the wet first coat and apply the second coat to the dry and keyed first coat.



Mixing


RonaBond HB40 Ultra Rapid must be mixed mechanically in a forced action mixer (e.g. Creteangle pan mixer) or using a high power slow speed drill (typically 500 rpm) with a paddle attachment, MR 4 or similar (do not use a free fall mixer).

Pour the dry powder into a mixing vessel containing ≥ 3 litres (but not more than 3.2 litres) of clean water. Mix for approximately 3 minutes to produce an even consistency. Note that the mix will stiffen during transit to the repair position.

Use complete packs to ensure consistency, uniform dispersion of pack contents and accuracy of powder:water ratio. To avoid a false set in warm working conditions store materials in the shade and use cool water.



Application


The mortar must be applied to the wet or tacky primer before the primer dries. If the primer dries it must be thoroughly scarified and reapplied.

Apply the mortar to reform the original profile of the concrete and cover reinforcing steel. Ensure that the mortar is fully compacted, paying particular attention to avoidance of voids around reinforcement. Layer thickness will vary according to the shape and size of the repair, the texture of the substrate and application technique. Application techniques include hand packing the mortar on to the surface.

When multiple layer application is required, each intermediate layer must be combed and allowed to harden before application of Ronacrete Standard Primer and a further layer of mortar. The repair must be finished with a steel or wood float, and may be dry sponge finished if required. If applying a protective or decorative coating such a RonaBond Crack Bridging Anti Carbonation Coating WB, RonaBond Anti-Carbonation Coating WB or RonaBond Masonry Paint WB, leaving the final layer with a sponge finish will aid adhesion.



Curing


Cure with Ronacrete Curing Membrane or tight fitting polythene as soon as possible and as quickly as is practical to prevent rapid early moisture loss from the mortar surface and minimise the risk of resultant plastic cracking. Curing is more important when working in direct sunlight and/ or in a drying breeze or wind.

Note that maximum application depth per layer is reduced and typical maximum layer thickness in larger repairs is 50mm vertically and 30mm overhead.



Test Data


  • Compressive strength
    • 1 hour - 6N/mm2
    • 24 hours - 30N/mm2
    • 7 days - N/A
    • 28 days - 37N/mm2
  • Tensile strength @ 28 days - 2.7N/mm2
  • Flexural strength @ 28 days - 7.1N/mm2
  • ISAT (ml/m²/sec) - 0.0
Product Details
10464-987819

Data sheet

Manufacturer
Ronacrete
For Use By
Professional Use
Interior / Exterior Use
Interior & Exterior
For Use On
Concrete Walls
Concrete Soffits
Application Method
Hand
Single, Two or Three Pack
Single
Pack Size
18KG
Coverage
1m² at 13mm (per pack)
Max. Application Temperature
25°C
Min. Application Temperature
2°C
Density
1550kg/m³
Layer Thickness
6-75mm
Colour(s)
Standard Colours
Suitable For Use On
Concrete Walls
Suitable For Use On
Concrete Soffits
Application Method
Hand
Manufacturer
Ronacrete
Usages
High Build Concrete Repair
Usages
Vertical Concrete Repairs
Usages
Overhead Concrete Repairs
Product Usage Type
Mortar
Product Range
RonaBond
Cleaning
Water
Colour Family
Grey
Categorised As
Repairs > Low Temperature Vertical & Overhead Repairs
Seasonal
Cold Weather
Attachments
Download


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.

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IMPORTANT SHIPPING & DELIVERY INFORMATION

Ronacrete RonaBond HB40 Ultra Rapid 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


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