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Case study

London Gateway Infrastructure Upgrade

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April 2018


Infrastructure upgrade

Material Specification
130,000 tonnes of SHW 600 Class 1A

J Murphy & Son LTD


IBAA was spread in 225mm layers, with 4 passes using a 3600kg vibrating roller to achieve ~30% CBR. The embankment slopes were ~60 degrees in some places near the roundabout.


IBAA is an extremely cost-effective material when compared to Primary Aggregates and BP UK is working towards a verified Carbon Footprint.

There are also advantages logistically when using IBAA due to the low density of the material allowing for fewer vehicle movements as this gives volumetric advantages over primary materials.