Fill compaction criteria for Port Hills Gravel Formation soils, Nelson (2007)
AuthorsWesterson, Johnshow all
Port Hills Gravel Formation (PHG) is a Pliocene terrestrial soil-like deposit. It is located in Nelson as part of the Marsden and Port Hills Synclines. PHG is comprised of heterogeneous clay and silt bound gravel, with lenses of sandstone and occasional lignite seams and is intersected by northeast - southwest trending faults. . PHG soils are considered good building material for the construction of earth structures such as embankment dams, gully fills and slope buttresses but there have been a number of failures in poorly constructed fills.. The purpose of this thesis was to study the engineering properties of PHG soils, to review current fill operations and to identify any serious shortcomings affecting earthfill operations with PHG soils and to establish standard testing methodologies and compaction criteria for the PHG soils.