London

Is London Clay Firm?

The London Clay is a stiff bluish clay which becomes brown when weathered and oxidized. Nodular lumps of pyrite are frequently found in the clay layers. What type of clay is London Clay? The London Clay mainly comprises bioturbated or poorly laminated, blue-grey or grey-brown, slightly calcareous, silty to very silty clay, clayey silt and …

Is London Clay Firm? Read More »

Is London Clay Permeable?

London Clay is also used to line exhausted quarries. This is because old quarry holes are generally refilled with waste material and by lining it with London Clay (which is virtually impermeable) it prevents waste and hazardous substances from entering the groundwater. Is London Clay porous? Another advantage of London Clay is that, clay being …

Is London Clay Permeable? Read More »