In-SITU COMPACTION

Innovative quality, from start to finish.

In-situ compaction refers to the improvement and stabilisation of existing base materials onsite, rather than importing external soil. This requires thorough analysis and suitable equipment to get effective results.

Some in-situ soils are too loose in their natural state to facilitate construction on the site within acceptable settlement tolerances. This is addressed by increasing the soil density with in-situ compaction of the natural ground strata to achieve the required strength and stiffness.

Landpac’s in-situ compaction capabilities with HEIC

Rock Fills

High Energy Impact Compaction (HEIC) compacts rock fills through ‘rubblisation’ of in-situ materials. In other words, breaking down large rocks into smaller particles with the use of dynamic compaction applications.

Mixed Fills

HEIC significantly benefits mixed fills in mine rehabilitation, infrastructure projects, stacker/reclaimer alignments, and mine haul roads, boosting uniformity, stability, and quality for improved construction efficiency and cost savings.

Shingle/ Rock

In-situ compaction reduces the need for removal and resurfacing of shingle/rocks from construction and mining sites as it reduces particle sizes over the course of multiple applications.

Before / After 25 surface passes

Sands

In-situ compaction reduces the need for removal and resurfacing of shingle/rocks from construction and mining sites as it reduces particle sizes over the course of multiple applications.

Pre and post sand reclamation CPT results to 18 feet

Sandy Clays

Landpac’s in-situ High Energy Impact Compaction (HEIC) offers a targeted solution to the unique challenges of sandy clay compaction in construction, significantly enhancing soil stability and load-bearing capacity directly at the construction site.

HEIC = > Elastic moduli

Saturated Alluvial Soils

High Energy Impact Compaction (HEIC) provides significant benefits for saturated alluvial soils, enhancing their stability, consolidation, and overall performance.

Cone Penetration Test –
Location 1 before and after

Liquification Mitigation

Field trials confirmed:

Liquification induced free field settlements in the upper 3m were reduced 40% to 90%
Liquefiable layers tended to be located generally within the upper 3m of the soil profile
The geotechnical investigation identified the site is predominantly beach and dune sand

Contaminated sites

HEIC is able to confine asbestos and other pollutants in-situ, eliminating environmental concerns related to material loading, transportation, and disposal.
Significant time and cost savings, exceptional efficiency, and a greener alternative to excavation, export, import, and 300mm layer compaction
Reduces carbon footprint and minimises exposure of hazardous materials to both people and the atmosphere

Interested in the potential of High
Energy Impact Compaction for your site?

What our  clients say

“We’ve worked with Landpac on about 140 successful projects, for a wide variety of clients, in most Australian states and in New Zealand, China, Malaysia and Fiji. Working with them using HEIC, compaction can be achieved over a much wider range of soil moisture than can be achieved with conventional compaction, with a considerable cost saving.”

George Black, BLACK GEOTECHNICAL

"The operators and supervisors from Landpac demonstrated their professionalism and wealth of knowledge on the HEIC process. Working to deliver the required results within the contracted timeframe."

Dominic Wallace, Ford Civil

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“The Landpac team have been the solution to reducing the settlement risks on many uncontrolled and/or deep fill development sites I’ve advised on; their measuring and monitoring technology provides reliable data I need as a geotechnical advisor to better understand the ground and treatment outcomes achieved.”

Andrew Middleton, Core Consultants Pty Ltd

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"The Visy project was the second project I have worked with Matt and the Landpac crew on, at the Port of Brisbane. On both occasions, they have been fantastic to deal with and always willing to go above and beyond to help create the outcomes needed. I look forward to working with Matt and the Landpac team again in the future."

Adam Tapper, McNab Relationship Builders

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