Hull grew rapidly during the 19th century on the flat alluvial plain of the Humber Estuary. The city's subsoil consists mainly of soft alluvial clays and silts with high moisture content, often reaching depths of 15 m before reaching competent glacial till. These conditions have always posed a challenge for urban development. Treating the ground with lime or cement is the most cost-effective way to transform these weak deposits into a workable construction platform. Before applying the binder, we always run a full suite of laboratory tests — particularly through a clasificación de suelos to determine plasticity index and organic content, which directly influence the required dosage. For Hull's marine clays, quicklime is usually preferred over cement when the natural moisture content exceeds 40%.
In Hull's soft alluvial clays, lime pre-treatment followed by cement injection can raise shear strength from 20 kPa to over 150 kPa within 14 days.