6,678,881 km² of ground compacted
31 industries catered to
5 countries worked in
36,785,000 m3 of earth filled
107 clients collaborated with
163 projects delivered
And
counting!
Location: Hong Kong
Client: Hong Kong Provisional Airport Authority
Chek Lap Kok Airport was built on an airport platform (12.5 km²) with 75% of the area on reclaimed land with the remaining 25% formed by excavating two existing granitic islands. The construction comprised the placement of 197 million m³ with 70 million m³ of that being hydraulically placed dredged sand fill.
Landpac was engaged to carry out Impact Compaction of the in-situ sub-grade materials as an alternative to the costly removal to the required depth and backfilling in layers with conventional roller compaction.
Location: Sydney, NSW
Client: Sydney Ports
To achieve the required compaction in the hydraulically placed dredged fill to 16m depth or so, Dynamic Compaction or Vibro-Floatation was used. The upper 3m of the soil profile with the use of Dynamic Compaction or Vibro-floatation techniques on a non-cohesive soil tends to be loose. Impact Compaction provided an economical means of compacting the upper loose soil profile to the required compaction levels after the Dynamic Compaction or Vibro-floatation had been applied.
Location: London, UK
Client: Dubai Ports World
The London Gateway project consisted of land reclamation with dredged fill. Landpac was engaged to do the surface compaction of the upper 3m on Port 1 & 2 (16Ha) after the completion of the deep compaction.
Location: Costa Rica
Client: APM Terminals
APM Terminals are expanding the port capacity at Limon Costa Rica, which handles 80% of the freight for Costa Rica. The terminal is being developed on a 40 Ha reclaimed area formed from dredged sand fill. Landpac has been engaged to compact the upper 3 metres to a Relative Density of 90%
Location: Newcastle, Australia
Client: AbiGroup Construction
The NCIG Kooragang Island Project aimed to increase coal throughput capacity to 30 Mtpa, involving the dredging of three berths in the Hunter River’s south arm to construct a functional coal export port. This significant project saw the collaboration of Dredeco and Boskalis Australia in dredging, resulting in 3.5 million m³ of sands being repurposed as construction fill.
Location: Morocco
Client: Tanger Med Port Authority
The Tanger MED 2 project, a major container terminal development in Morocco, incorporated innovative compaction techniques for its 140ha construction site. Faced with the challenge of effectively compacting the top 2-3m of dredged material, a trial using Impact Compaction was executed.
Location: Dubai
Client: Dubai Ports World
At Jebel Ali Port, Dubai, a reclamation project behind Quay 4 and Berth 21 involved backfilling dredged marine sands to a depth of 16m, initially improved by Vibro compaction. However, initial Cone Penetration Testing indicated inadequate compaction in the top 2m. Landpac intervened, enhancing the bearing characteristics of this layer with their impact compaction technique.
Location: Singapore
Client: The Maritime and Port Authority of Singapore (MPA)
LANDPAC was engaged to do the surface compaction of the upper 2.4m sand fill layer to a 90%MMDD >1m depth and 95%MMDD ≤1m depth Compaction on the existing and newly reclaimed land by 410 ha. The compaction work was successively carried out by using a 3-sided twin drum impact compactor.
A highly contaminated site with Asbestos Containing Materials (ACM) was stabilized using in-situ High Energy Impact Compaction (HEIC), followed by the placement of an orange geofabric barrier and a 20-inch (500mm) cap of clean Virgin Excavated Natural Material (VENM) for safety and compliance.
The site, initially covering 130,000 square meters, was contaminated with heavy metals including lead, zinc, and arsenic. It underwent in-situ compaction using High Energy Impact Compaction (HEIC) as a remediation strategy. Following treatment, the area was expanded to 150,000m², capped, and repurposed for industrial use.
A specialised cell was constructed to contain Per-and Poly Fluoroalkyl Substances (PFAS)-contaminated soils, which were compacted on-site. This containment is crucial due to the persistence, environmental prevalence, and significant health impacts of PFAS contaminants.
A heavily contaminated 80,000m² site with ACM and heavy metals was rehabilitated using High Energy Impact Compaction (HEIC). After in-situ compaction and capping with approved materials, the site was transformed into a valuable industrial asset and sold to the client.
Density has long guided compaction, but it does not reflect how ground performs under load. This article explores the shift to modulus-based verification using HEIC, ICM and in-situ testing.
Understand the difference between uncontrolled and contaminated fill, the risks of each, and how Landpac’s HEIC method delivers safe, stable ground.
From haul roads in WA to tailings dams in QLD, High-Energy Impact Compaction (HEIC) is reshaping ground improvement across Australia’s mining operations. Backed by Intelligent Compaction Measurement (ICM), HEIC delivers faster, deeper, and more reliable results, boosting safety, sustainability, and cost-efficiency in some of mining’s toughest conditions.