The transport and beneficial re-use of Crossrail excavated material

The 6,000,000 T of material excavated by Crossrail is generated by the construction of:

This excavated material is taken from the full range of geological materials present in London. These strata units and the types of construction they are found in are set out in Table 1.

The geotechnical properties of these materials that are most relevant to transportation are those that govern stability during transportation. These are moisture content, plasticity and undrained shear strength for the EPB, SCL, and box/shaft/portal excavations. Typical values of natural moisture content, undrained shear strength (Su) and liquid limit are given in Table 2.