RonaFloor Repair 1 Hour 6-50mm is a thin polymer modified repair mortar designed for rapid strength gain and/ or low temperature use; after 1 hour of curing @ 20ºC the material is sufficiently strong for foot traffic and is sufficiently strong for light vehicle traffic after 2 hours of curing @ 20ºC.

Used for patch repairs to concrete slabs where rapid strength gain is required or when low ambient temperature prevents the use of standard set mortars. RonaFloor Repair 1 Hour 6-50mm is suitable for medium duty use from 6-10mm and for heavy duty use from 12mm thickness.

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• Features & Benefits
• Case Studies
• Working Time and Mixing
• Floor Repair
• Bedding Kerbs, Paviours, Copings
• Working Temperatures
• Repair Volume and Size Limitations

Features & Benefits

• Ultra-rapid strength gain
• High ultimate strengths
• Foot traffic after only 1 hour @ 20ºC
• Light wheeled traffic after only 2 hours @ 20ºC
• Low temperature application, minimum working temperature –10ºC
• Pre-packed for ease of use and assured quality
• Application from 6mm - 50mm thickness
• Water and frost-resistant

Case Studies

The Shard

The tallest building in Europe since its 2012 opening, The Shard is 306 metres high and has 87 floors, incorporating state of the art offices, apartments, a hotel, restaurants, retail outlets and of course a viewing gallery.

A thin screed was needed for several floors in the Shard’s upper levels and Ronafix Pre-packed Screed 6-50mm was specified because of its durability and it’s high compressive, flexural and tensile strengths. As a pre-packed system it provided the specifier with assurance of consistent high quality.

Cambridge University

Ronafix Pre-packed Screed 6-50mm provides drainage to the new terrace construction on the Grade II listed South Court building, which was to be waterproofed with mastic asphalt and finished with a tiled surface, providing protection to the existing structure below.

Early application of the asphalt waterproofing was possible because Ronafix Pre-packed Screed 6-50mm dries faster than traditional sand and cement screeds, reducing the delay between application of the screed and waterproofing.

Working Time and Mixing

RonaFloor Repair 1 Hour 6-50mm is a rapid set mortar system, designed for mixing in small volume.

The working time is approximately 10-15 minutes, dependent on material and ambient temperature.

It must therefore be mixed close to the area of application so that it can be placed and finished before initial set.

For larger volume work where rapid strength gain is required, please contact Ronacrete/Rawlins Technical on 0113 2455450 (option 2) or send a message to [email protected].

Floor Repair

1. Saw cut repair perimeters to produce a vertical edge 6mm minimum and remove materials within the repair, as required, to ensure that a minimum repair thickness of 6mm can be achieved
2. Prepare concrete by mechanical abrasion to produce a textured surface and remove friable material
3. Thoroughly clean to remove grease, oil and other contaminants which may impair adhesion. Vacuum clean to remove loose materials, dust and debris
4. Ensure that the substrate is sufficiently strong to restrain the repair
5. Wet the surface with clean water; soak very porous surfaces for up to 24 hours; remove all standing water before priming the damp substrate
6. Mix Ronacrete Rapid Primer with a slow speed drill fitted with an MR2 type spiral paddle and apply, ensuring total uniform coverage
7. Only prime an area which can be covered by the mortar within the working time of the primer
8. Mix RonaFloor Repair 1 Hour 6-50mm with a slow speed 1kW drill fitted with an MR4 type helical paddle, close to the area of application, pouring the supplied gauging liquid into a mixing vessel and gradually adding the powder component
9. Trowel apply the mixed material to the wet or tacky primer, compact and close the surface with a float or trowel. Dry primer must be thoroughly abraded and a fresh coat applied
10. Protect the surface until sufficiently hard (typically 1 hour at 20°C)

Bedding Kerbs, Paviours, Copings

1. Prepare the substrate by mechanical abrasion to produce a textured surface and remove friable material
2. Thoroughly clean to remove grease, oil and other contaminants which may impair adhesion. Vacuum clean to remove loose materials, dust and debris
3. Ensure that the substrate is sufficiently strong to restrain the repair
4. Wet the surface with clean water; soak very porous surfaces for up to 24 hours; remove all standing water before priming the damp substrate
5. Mix Ronacrete Rapid Primer with a slow speed drill fitted with an MR2 type spiral paddle and apply, ensuring total uniform coverage
6. Only prime an area which can be covered by the mortar within the working time of the primer
7. Mix RonaFloor Repair 1 Hour 6-50mm with a slow speed 1kW drill fitted with an MR4 type helical paddle, close to the area of application, pouring the supplied gauging liquid into a mixing vessel and gradually adding the powder component
8. Trowel apply the mixed material to the wet or tacky primer, compact and produce a textured surface for bedding of the component
9. Dry primer must be thoroughly abraded and a fresh coat applied
10. Prime the contact surface of the component and press into the fresh mortar, ensuring intimate contact. Ensure that neither primer nor mortar makes contact with visible surfaces of the unit, porous surfaces will stain

Working Temperatures

RonaFloor Repair 1 Hour 6-50mm can be used in most weather conditions and in a wide temperature range, typically from -10°C to 25°C.

At high ambient temperature the working time of the mix will be considerably reduced; it will be increased at lower temperatures.

Care must be taken when using RonaFloor Repair 1 Hour 6-50mm in extreme temperatures to ensure that the water used for damping, and the primer, does not freeze or dry/ evaporate on or soon after contact with the substrate.

Repair Volume and Size Limitations

Consideration should be given to the rapid exothermic reaction of very fast setting materials applied in large volume or large areas; the reaction is controlled in small patch repairs but thermal cracking can occur in larger repairs.

Contact Ronacrete/Rawlins Technical for advice about large repair areas or use in large volume on 0113 2455450 (option 2) or send a message to [email protected].