Product category:
Waterproofing, Sealants and Adhesives
News Release from: Sika | Subject: Sika CarboDur CFRP plates
Edited by the Buildingtalk Editorial
Team on 02 June 2005
Sika CarboDur Plates strengthen Buscot
House
Sika CarboDur CFRP plates have recently been used to strengthen the stone landings of an ornate stairwell at Buscot House, near Lechlade in Oxfordshire.
Sika CarboDur Plates Add Hidden Strength to Buscot House Sika CarboDur CFRP plates have recently been used to strengthen the stone landings of an ornate stairwell at Buscot House, near Lechlade in Oxfordshire This grand, neo-classical, 18th Century manor house was bequeathed to the National trust in 1956, and is home to the Farringdon Collection of works by contempory artists
This article was originally published on Buildingtalk on 1 Nov 2005 at 8.00am (UK)
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The weight of many visitors passing through was causing some deflection on the landings, and a solution was required to strengthen the structure, but causing minimal visual impact on the stairwell.
Following thorough evaluation, consulting engineers Gifford and Partners, in consultation with the National trust, chose the Sika CarboDur system as the ideal solution to add the required strength, and be virtually invisible on completion.
Specialist contractor Concrete Repairs Limited was appointed to carry out the work.
The Sika CarboDur CFRP structural strengthening system comprises pultruded carbon fibre plates of various width, thickness and strength, bonded in place with SikaDur 30, a specially formulated cold-cure, two component epoxy structural adhesive.
SikaDur 30 is suitable for damp and dry substrates, and is used widely for the upgrading of all types of structure.
On the Buscot House stairwell, the first job was to channel out the undersides of the landings to accept the 50mm wide Sika CarboDur plates, which were then bonded in place with SikaDur 30 adhesive.
The adhesive holds the plates in place with no additional support required.
After curing, the plates were coated with a layer of the SikaDur 30 with sand fill to form a bonding bridge for Sika MonoTop 620 levelling mortar, bringing the repairs back to the level of the surrounding substrate.
Following painting, the strengthening works blended in perfectly with the stairwell structure.
This is a great example of how modern materials and techniques, properly applied, can be utilised to maintain old and listed buildings with the minimum of visual impact.
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