Bristol Airport Car Park
Location:
Bristol Airport, England
Country:
United Kingdom
Project Type:
Car Park
Project Scale:
10,000 m² +
Adding Life to Concrete – How MARKHAM applied hydrogel waterproofing systems to a new multi-storey car park structure at Bristol Airport, England.
OBJECTIVE
The more traditional multi-coat deck membrane that this type of deck structure would normally be sealed with presents a number of challenges, being significantly impacted by poor weather conditions and delays waiting for the appropriate level of concrete cure.
This would have been particularly critical for this project, as this element of the works would have fallen through winter and early spring. MARKHAM were asked to provide an alternative waterproofing system to seal the top deck of this structure.
SOLUTION
MARKHAM was able to assist with a holistic three-part system. The concrete itself was made waterproof by including AQURON 300 admixture in the mix design and AQURON 2000 spray applied treatment. All electrical and drainage penetrations in the decks, and the edge kerb upstands on the decks were sealed with CONQOR 47B delayed swell waterstop gasket.
RESULTS
The inclusion of AQURON 300 in the concrete at mixing stage and the treatment of the concrete with AQURON 2000 the day after placement meant that the waterproofing process was going on concurrently with the pour schedule. This removed the delays typically encountered with the application of a multi-coat membrane system.
As the bulk of the work was carried out between October 2024 and March 2025, the weather conditions included a significant amount of rain and some snow. This would have made the application of a multi-coat membrane impossible but, waterproofing the deck with
AQURON and CONQOR products was completed despite the weather.
Sealing all penetrations and kerb upstands using CONQOR 47B meant that MARKHAM’S waterproofing solution was contiguous across the whole of the top deck area of this structure.
As the waterproofing solution is included right through the full depth of the concrete, this means that it is in place for the lifespan of the concrete and will not require any reapplication or ongoing maintenance.
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Project Details – Bristol Airport Car Park | |
Description | A new multi-storey car park structure requiring waterproofing to the top deck level |
Area Treated | 14,530m² |
Age of Structure | New (2025) |
Requirements |
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Operation Downtime / Interruptions | As the AQURON 300 was being included in the concrete mix and the AQURON 2000 was applied the day after concrete placement, the treatment works ran simultaneously with the pour schedule meaning that there was no delay / interruption to the construction schedule. It in fact removed a large potential delay that could have been incurred if a multi-layer membrane had been used instead. |
Application Method | Medium Pressure Boom and Back-Pack Sprayers |
Proposed Further Works | No further works required. |
OHS Requirements |
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