Gauteng Branch

Deflection measurements with Dynatest FALLING WEIGHT DEFLECTOMETER (FWD)

Equipped with 9 sensors to provide defl ection basin caused by controlled load
SHRP Reference calibrated by SABS
Two fully calibrated and operational FWD’s to meet our customer demand
FWD mobility enable us to work across RSA borders in Africa and even on other continents if required.
FWD generated data combined with layer thickness can be used to obtain in-situ resilient E-moduli of a pavement
structure which in turn can be used in a structural analysis to determine bearing capacity, estimate expected life and calculate an overlay requirement.

Friction measurements with GRIPTESTER

For use on Roads & Airport runways
Fixed slip device enabling continuous measurements
Horisontal (Drag) and vertical (Load) forces are measured continuously
Measuring tyre is ASTM Type A and quality is strictly controlled
PIARC calibrated to measure IFI

Profiling with Dynatest Road Surface Profiler 5051 Mark 11

IRI to class 1 standard as per ASTM E950.
Rutting Profiles taken with 17 lasers.
DGPS allows easy integration of GIS.
Integrated digital photos every 10m back and front.
Real time data processing.
All traffic speeds.
Network, Project and Quality Acceptance Surveys (for Penalty/Bonus Situations)

KwaZulu-Natal Branch

Binder Tests

Complete SABS 307 testing, including Ductility.
All specified modified Binder Tests according to Asphalt Academy Technical Guidelines 1 including Flash Point.
Binder Recovery
SABS 309 and SABS 548 tests on bitumen emulsions

Repeated Load testing using a NOTTINGHAM ASPHALT TESTER.

Dynamic Creep
Resilient Modulus
Fatigue at constant stress

Accelerated Pavement Testing using a MMLS3. We are able to do deformation tests on the following options:

Laboratory prepared briquettes.
Field Cores.
Laboratory compacted Slabs.
In-situ on-site tests.

Asphalt tests

Modified Lottmann/Moisture Sensitivity Evaluation
Air Permeability at 7% voids as well as Water Permeability
Marshall tests including ITS
Troxler Gyratory Compaction
Mix designs
New SA Hot-Mix design method
LAMBS
SMA
Porous Asphalt
Slurry designs

Aggregates

Polished Stone Value
Methylene Blue
Riedel and Weber stripping
Fine Aggregate Angularity
Rigden Voids
Many other routine tests

SRT supplies testing services for private industry, including contractors and consultants, as well as municipal,
provincial and national authorities - to evaluate the properties of materials and design inputs for the management of
road networks. These tests consist of specialised bitumen and asphalt testing as well as non- destructive and
specialised road surveillance testing.