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It’s water under the bridge with Propump – September 2011

Propump Engineering has supplied 15,000m3 of foamed concrete to stabilise a new roadway and food distribution centre car park at the £400 million Bridge Estate development in Dartford, Kent.

Propump supplied two densities of foamed concrete, 1100kg/m3 and 500kg/m3, to ensure a quick and efficient installation whilst eliminating any potential problems with building on the 264 acre brownfield site near the Thames Estuary.

The site of the new road was a mixture of made up ground from previous quarrying activities with soft peat and clay beneath. Standard road construction materials would have caused consolidation and settlement of the finished road, so to avoid this, the made up ground was excavated and replaced with Propump’s quality assured foamed concrete.

As the new roadway was also being built on ground with a high water table, Propump had to ensure the foamed concrete supplied had a heavier density than water – approximately 1000kg/m3. For this, the company supplied 1100kg/m3 density foamed concrete to complete the first UK application of foamed concrete to support a road this size, more than 1 kilometre in length.

Following this successful installation, Propump was appointed to create a sub base for further extensions to the road, as well as a solid base to enable the construction of a block paved car park for a new-build food distribution centre. Built on land less susceptible to flooding, Propump produced and installed 500kg/m3 density foamed concrete.

As one of the first major regeneration schemes in the redevelopment of the Thames Gateway, the Bridge Estate offers a combination of 1.8 million sq ft of commercial space and 1,500 new homes with excellent access to the M25 motorway. Thanks to Propump Engineering, one of the South East’s most exciting developments in recent years has a stable and reliable base to build upon.

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