Construction Materials Testing (CMT) | Field & Lab Services
Fast, standards-aligned construction materials testing you can rely on.
From earthworks to aggregates — Compaction Testing, Level 1 supervision and lot conformance delivered with confidence.
Fast. Practical. Reliable. Always on your team.
We are the Benchmark
Keep production moving with responsive and knowledgeable field technicians and traceable lab results. Benchmark delivers Compaction testing, Level 1 supervision support, and various NATA Accredited testing to confirm compliance against ITPs, Project specific specifications and Australian Standards. Get clear pass/fail outcomes, quick turnaround on results, and well-structured conformance records.
Services Menu
Earthworks Control
- Field Sampling with Nuclear Gauge Density Testing
- Laboratory Compaction testing – Standard, Modified, Rapid/HILF Testing to various standards/specificatons
- Lot selection, test frequency and coverage per spec
- Fast turnaround of results to ensure your project keeps on moving
Level 1 Supervision
- Level 1 supervision in accordance with project specific and Australian Standards
- Detailed records and reporting
Aggregates & Quarry Materials
- Sieve analysis, PI/LL/PL, durability indicators
- Source compliance checks and periodic verification
General Materials Testing
- California Bearing Ratio (CBR) Testing
- Plate Load Testing
- PSD – Particle Size Distribution/Sieve Analysis
Please see our NATA Accredited testing scope here: https://nata.com.au/accredited-organisation/benchmark-geotechnical-20634-24735/
We are also accredited for Sydney Water (Cp) Compaction Testing.
Process
Scope & schedule
→ align to ITP/spec and program
Field sampling
→ calibrated equipment and chain-of-custody
Laboratory
→ standards-aligned methods and QA/QC
Reporting
→ pass/fail clarity and traceable records
Close-out
→ consolidated conformance packs
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Construction Materials Testing (Soil & Earthworks) – FAQs
We provide comprehensive soil and earthworks testing including in-situ density testing, compaction verification, Level 1 supervision, proof rolling, plate load testing, and laboratory testing to support compliant earthworks construction.
In-situ density testing verifies that soil has been compacted to the required standard. It is essential for demonstrating compliance with AS3798 and project specifications.
Yes. We provide Level 1 supervision in accordance with AS3798, including inspection, testing, documentation, and verification of earthworks.
Our soil testing and earthworks services are aligned with AS3798 (Earthworks), AS1289 (Soil testing), and relevant project-specific specifications and are undertaken to NATA ISO / IEC 17025 (2017)
Proof rolling involves controlled loading of prepared surfaces to identify soft spots or unsuitable material prior to construction. It is commonly required before placing fill on a layer.
Yes. We assess fill materials through laboratory testing and ongoing visual inspection to confirm suitability and compliance before placement on site.
Plate load testing assesses the bearing capacity and stiffness of subgrades and pavements, helping confirm ground performance prior to construction.
Yes. We provide lot-based testing and documentation to verify that earthworks meet compaction, moisture, and material requirements in accordance with AS3798.
Testing frequency depends on the earthworks classification, project specifications, and regulatory requirements. We work with clients to establish compliant and efficient testing regimes.
Yes. We understand construction pressures and provide fast response times and practical testing solutions to keep projects moving without compromising compliance.
Yes. We coordinate laboratory testing such as moisture content, particle size distribution, Atterberg limits, and compaction characteristics as required.
Our soil testing services are used by developers, builders, contractors, engineers, and councils across residential, commercial, and infrastructure projects.
We combine practical site experience with strong standards knowledge to deliver reliable, compliant soil testing that protects quality, approvals, and project and constructor reputations.
Soil testing should be arranged early—before and during earthworks—to ensure materials and compaction meet requirements and avoid costly rework or delays.