Binder & Grading Testing Services

Ensure the quality and performance of your asphalt materials with Celtest’s independent binder and grading testing services. Our UKAS-accredited laboratory delivers accurate, standards-compliant results to support pavement design, production control and specification compliance.

Binder content and aggregate grading are critical to understanding how asphalt will perform under traffic and environmental conditions. We provide reliable data to support informed engineering decisions and quality assurance.

UKAS-Accredited Binder & Grading Testing

Celtest carries out binder content determination and particle size analysis in accordance with recognised BS EN 12697 standards.

Our testing supports:

  • Verification of asphalt composition
  • Compliance with project and specification requirements
  • Assessment of durability and structural performance
  • Production and quality control for asphalt plants and contractors

All testing is undertaken within the scope of our UKAS accreditation, where applicable.

How Binder & Grading Testing Supports Your Project

Binder and grading analysis provides measurable data to help you:

  • Confirm Binder-to-Aggregate Ratios
  • Assess Consistency of Asphalt production
  • Evaluate Material Suitability for Intended Applications
  • Support Pavement Design and Lifecycle Performance
  • Demonstrate Compliance with Industry Standards
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Binder & Grading Testing Methods

We provide accredited testing using established extraction and analysis techniques.

Solvent Extraction with Pressure Filtration

BS EN 12697-1 & BS EN 12697-2

  • Solvent extraction separates the bituminous binder from the aggregate
  • Pressure filtration supports efficient recovery of minerals
  • Recovered aggregate is analysed using sieve analysis
  • Provides accurate determination of binder content and grading

Materials & Pavement Testing

BS EN 12697-1 & BS EN 12697-2

  • Binder is removed using solvent extraction via centrifuge or bottle rotation
  • Ensures effective separation and recovery of aggregates
  • Followed by sieve analysis to determine particle size distribution
  • Suitable for a wide range of asphalt mixtures

What We Do

We deliver independent binder content and grading analysis to support asphalt design, production and compliance. Testing is carried out in our UKAS-accredited laboratory, with clear and reliable results provided for decision-making and reporting.

How We Work With You

  • You provide sample details and testing requirements
  •  We confirm the appropriate methods and standards
  • Testing is completed in our accredited laboratory
  • You receive accurate results for quality control and compliance

How We Support Airfield Projects

Celtest provides both laboratory and site-based services throughout the project lifecycle:

  • UKAS Accreditation – Testing Carried Out to BS EN 12697 Standards
  • Technical Expertise – Experience Across a Wide Range of Asphalt Mixes
  • Reliable Data – Results Suitable for Specification Compliance and Reporting
  • Practical Support – Clear Outputs to Support Engineering Decisions

Frequently Asked Questions

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