Projects
Avison Street Area
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Non traditional housing stock in Newcastle upon Tyne. The front bedroom is supported by concrete pillars which had failed repeatedly in the past.
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The concrete slab is broken exposing the base of the pillar and the top of the pad foundation. The lower part of the pillar which had previously been concealed was in remarkably good condition.
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A fully designed support structure is erected. The concrete is hammer tested and defective areas are cut around to avoid feathered edges. The concrete is broken out to expose the steel reinforcement.
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The steel reinforcement is carefully cleaned to remove surface corrosion.
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The steel reinforcement is fully encapsulated with an epoxy primer.
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The existing epoxy coating on the ring beam and pillars is removed with needle guns. This will allow for maximum penetration of the Migratory Corrosion Inhibitor, Mulsiguard MCI. The Migratory Corrosion Inhibitor is spray applied in accordance with the manufacturer’s data sheet.
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Shutters are made and the repairs are poured using SBD Five Star Repair Concrete. The shutters are removed to reveal the newly cast pillars. The final repairs are formed using SBD Mulsifix Keycoat and Mulsifix Repair Mortar.
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The sharp arrisses of the pillar are ground down and a carbon Fibre structural repair system is pressed into place with a roller. Further sealer coats are then applied. The brickwork and pavement concrete is reinstated. An anti-carbonation coating is applied upon completion.
There are around 200 properties of this type in Newcastle where the bedroom is supported by two pillars. These pillars were showing signs of deterioration to varying degrees and, given the slenderness of the design, this raised cause for concern. Over the years, previous attempts to repair the pillars had failed so an effective solution had to be found. With the technical support of Weber SBD, a proposal was made for a bespoke specification that would not only offer the reinstatement of the concrete but also increase the strength of the pillars without altering the profile.
As a result of this successful pilot, St Astier Ltd went onto carry out similar repairs to a further 60 properties as well as additional concrete repairs to five blocks of flats, all as part of the Decent Homes Scheme, managed by Wates Construction.
This project was added to our site on 17 August 2004 and is currently filed under Concrete Repairs and Decent Homes.
Project Types
- Bird Control (1)
- Built Heritage (11)
- Concrete Repairs (7)
- Decent Homes (5)
- Non Traditional Housing (5)
- Structural Stabilisation (9)
- Structural Waterproofing (2)
