Date / Duration
August 2019 / 12 wks
Max Height – 9.6m
Length – 105m
Appointed to work with Maccaferri to provide the specialist earthworks and stabilisation of chalk arisings for a mechanically stabilised earth (MSE) structure as part of a new housing development.
Project challenges / GDL solutions
- Cement stabilisation of chalk is non-routine in such applications since achieving structural grade compaction of the chalk is not straightforward given the material’s propensity to degrade under excessive compaction.
- In determining the strength characteristics for the materials, we collected samples from site, prepared stabilised samples in our laboratory and utilised our tie-up with Strathclyde University to undertaken large shear box tests on the stabilised chalk. We also undertook a compaction study in our own laboratory in order to develop a workable specification.
Project benefits for the client
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- The chalk material was originally scheduled for offsite / landscaping with a replacement import material required and thus the economic & environmental savings for the project were substantial.