Innovative Solutions
State Asphalt NSW has been a leader in the testing of asphalt, aggregates, and bitumen for over 50 years. Throughout this time, we have continuously invested in our facilities, optimised processes, and trained our employees to meet the rapidly evolving construction techniques. Our commitment to quality is underscored by our participation in proficiency test schemes for asphalt, aggregate, and bitumen, ensuring a consistently high level of quality and assurance across all our laboratories.
We have it covered
State Asphalts NSW is one of the largest independent Asphalt Production businesses in Australia, with production facilities in Prestons, St Marys & South Nowra. Our production facilities have the ability to utilise high recycled content, with multiple feed points for different sustainable materials including RAP (Reclaimed Asphalt Pavement), Glass, Rubber (Tyres) and Fibres (from Coffee Cups). State Asphalts NSW have been awarded grants from federal government, for excellence in continued research into recycling waste materials back into high performance asphalt designs, giving birth to PAK-PAVE, our sustainable product range that utilises waste materials in asphalt production, diverting waste from landfill and largely reducing the use of virgin raw materials.
St Marys
Laboratory
Our state-of-the-art St Marys lab is NATA accredited. NATA is Australia’s leading national accreditation body, recognised by government to assess an organisations competency against international standards for laboratories, inspection bodies, proficiency testing providers and reference material producers.
We provide testing services to various external particles including road authorities which enables external clients to verify product conformance.
Bitumen Testing
Our certified technicians adhere to Australian and International Test Methods, performing a comprehensive suite of tests including:
- Penetration Bituminous Materials
- Dynamic Viscosity by Capillary Viscometer
- Dynamic Viscosity by Rotational Viscometer
- Stripping Potential of Cover Aggregate
- Initial Adhesion of Cover Aggregate
- Rolling Thin Film Oven test
- Loss on Heating
- Matter Insoluble in toluene
- Viscosity – Temperature Chart
Field Testing
- Coring – for in-situ density and depth confirmation
- Non destructive in-situ density testing (nuclear gauge density testing)
- Sand Patch testing (for texture)
- Roughness testing (bump car)
- Permeability testing
Aggregate Testing
- Average Least Dimension 10mm, 7mm and 5 mm
- Misshapen
- Density of Aggregate
- Water Absorption
- Methylene Blue Value (Soundness)
Polymer Modified Bitumen (PMB) Testing
-
Dynamic Viscosity by Rotational Viscometer
-
-
Consistency and Elastic Recovery
-
Stiffness Segregation of PMBs
-
Stress Ratio
-
Rheological characterisation of binders by Dynamic Shear Rheometers (DSR)
-
Loss of Heating of PMB
Asphalt Testing
- Sampling of Asphalt
- Asphalt Binder Recovery
- Mixing and Quartering
- Compaction using Gyratory, Servo and Marshal Compactor
- Reflux Method, Bitumen Content and aggregate grading
- Maximum density – water or methanol displacement
- Bulk Density
- Binder film thickness
- Resilient Modulus of asphalt
- Wheel tracking test
- Hamburg Wheel Tracking Test
- Fatigue and flexural properties
- Slab compaction
- Permeability (Ponding)
- Tensile Strength Ration in asphalt
Our asphalt product range
State Asphalts NSW can provide asphalt mixes to specification and have a range of sustainable asphalt types within the product range, examples include:
Enrobés à Module Elevé (EME)-
Dense Graded Asphalt with Recycled Crushed Glass (RCG)
-
Hi RAP mixes for use in Council & TfNSW Projects
-
Warm Mix Asphalt – reducing energy consumption and emissions
-
Stone Mastic Asphalt with Coffee Cup Fibres
-
Crumb Rubber mixes – using old tyres destined for landfill
-
Conventional RAP mixes to government specifications
