Y ear: Technology: 2009 Compaction Grouting When the perimeter spread footings of a 1970’s era mid-rise located in midtown Toronto were undermined by a neighbour’s deep excava- tion, the options for remediation came down to micropiles or compac- tion grouting. Due to the cohesionless character of the foundation soils (compaction grouting works best in self-draining soils) and the relatively shallow zone of disturbance, compaction grouting wa

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