SANAS ISO/IEC 17025:2017 Accredited

Asphalt & Bitumen Testing

Comprehensive asphalt mix designs, seal designs and bitumen testing — engineered for road surfacing that performs and lasts, from a SABITA-affiliated, accredited laboratory.

087 285 0816
Established 1986SANAS Accredited24-hour quote responseOn-site testing

What's included

  • Asphalt mix designs
  • Marshall stability & flow
  • Binder content & aggregate grading
  • Bulk & maximum density / voids
  • Bitumen & binder testing
  • Seal (surfacing) designs
Overview

Asphalt & Bitumen Testing

Road surfacing is only as good as the mix beneath the roller. Asphalt and bitumen testing confirms that binders, aggregates and the final mix meet specification — so surfacing performs under traffic and climate instead of failing early.

Letaba Lab designs asphalt and seal mixes and runs the full test suite: Marshall stability and flow, binder content and grading, bulk and maximum density, and voids analysis. We also test bitumen and binder properties.

As a member of the Southern African Bitumen Association (SABITA), our work aligns with industry best practice, and all testing is carried out under SANAS ISO/IEC 17025 accreditation.

Industries served

Trusted by the sectors that depend on defensible materials data.

Road ConstructionConstructionCivil EngineeringMunicipal Infrastructure
Benefits

Why clients choose Letaba Lab for this

SABITA-affiliated expertise

Mix and seal designs aligned with recognised Southern African bitumen practice.

Optimised, durable mixes

Designs balanced for stability, durability and economy so surfacing lasts under traffic.

Rapid, accredited reporting

Fast turnaround on accredited results to keep surfacing operations on schedule.

Our process

From sample to signed-off results

A clear, accredited workflow that keeps your programme moving.

1

Sampling

Binder, aggregate and asphalt samples are taken to national standards.

2

Mix design

We design or verify the asphalt or seal mix for your specification.

3

Accredited testing

Marshall, binder content, density and voids tests run under ISO/IEC 17025.

4

Reporting

Clear, certified results and mix-design reports ready for the engineer.

Capability

Equipment & applicable standards

Equipment we use

  • Marshall stability apparatus
  • Binder extraction (centrifuge / ignition)
  • Maximum (Rice) density apparatus
  • Core & bulk density equipment
  • Penetration & softening-point apparatus
  • Controlled water baths & ovens

Applicable standards

Testing is carried out to recognised South African and international standards. Confirm the exact accredited scope for your branch.

TMH1 — Asphalt & bitumen methodsSANS 3001-AS / BT seriesSABITA manuals (mix & seal design)COTO specificationsISO/IEC 17025
FAQ

Frequently asked questions

Do you design asphalt mixes?
Yes. We produce and verify asphalt mix designs — and seal (surfacing) designs — optimised for stability, durability and economy to your specification.
What asphalt tests do you run?
Marshall stability and flow, binder content and aggregate grading, bulk and maximum (Rice) density, and voids analysis, among others.
Can you test bitumen / binder properties?
Yes — we test binder properties such as penetration and softening point as part of our bitumen testing capability.
Are you affiliated with SABITA?
Yes. Letaba Lab is affiliated with the Southern African Bitumen Association, and testing is carried out under SANAS ISO/IEC 17025 accreditation.
How fast can I get results?
Turnaround depends on the test suite and mix-design scope. Tell us your programme when you request a quote and we will confirm timing.
Download our capability statementFull scope, methods and accreditation details for your records.
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Ready to discuss your project?

Submit your details and receive a formal quotation within 24 hours — from a SANAS accredited laboratory trusted since 1986.

087 285 0816