Ronacrete products at the Barbican Centre

Ronacrete products at the Barbican Centre

Ronacrete was involved with construction at The Barbican Centre, dubbed ‘one of the modern wonders of the world’ by The Queen.

A Grade II listed building, the Barbican is Europe’s largest multi-arts and conference venue and one of London’s best examples of Brutalist architecture.

The Ronafix admixture was used for bonding of tiles, for bedding of paving, for bonding large areas of render in the concert hall, for screeding and for repairing fire-damaged concrete.

Maintaining the quality of the surroundings requires a continuous programme of maintenance and replacement. By late 2011 the City of London concluded that a comprehensive replacement of the paving was required to address recurring problems with the waterproofing of the pedestrian decks, raised over commercial premises.

Ronafix Mix Design A1 high strength polymer modified mortar was specified for screeds to be laid to falls, Ronafix Mix A1 was chosen for its ability to be laid over insulation boards at a minimum thickness of 35mm, maximizing achievable falls and for its low permeability. Ronafix Mix Design C waterproof high strength polymer modified mortar was specified for bedding of tiles, chosen for its thin bed depth, high adhesion strength and waterproof properties.

Ronafix used in a mortar mix enhances long term flexural and tensile strengths of a mortar, ensuring that materials remain durable for decades longer than unmodified materials. Ronafix significantly improves resistance to water absorption and in high concentration makes the mortar waterproof. Shrinkage is reduced in mixes modified with Ronafix to 0.1-0.2%, depending on the chosen mix design and when moisture sensitive materials are to be applied, the shorter drying time of Ronafix mix designs reduces waiting time from months to days or weeks.

Liquid resin waterproofing was applied to the existing asphalt membrane of a large podium, located within the centre of a residential area and insulation was upgraded. The hard landscaping included the removal of existing tiles, adhesive beds and screeds and application of Ronafix screeds laid to falls and Ronafix thin bed waterproof mortars for bedding of tiles.

Tiles were bedded on a nominal 15mm thickness of Ronafix Mix C waterproof bedding mortar by A.T. Knott & Sons Ltd; selected for their extensive knowledge of the site, gained by their involvement in the original project.

10,000m2 of Ronafix Mix A1 to adjust falls were laid on the deck, thus improving water shedding from the paving to the drains.

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Ronacrete has been manufacturing specialist construction products since 1969. Ronacrete produces market leading brands for construction, including Ronafix admixture with BBA Approval for screeds, renders, concrete repair and bedding mortars....
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