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MATERIALS TESTING

Sample & Field Testing

These services provide critical insight in the field.

Our accredited facilities can perform sampling and coring, nuclear densities and a range of other quality control tests.

Our tests always adhere to standards set by SANS, ASTM and British Standards.

Sample & Field Testing

Sample & Field Testing

SERVICE OFFERING

01


Nuclear Density

Used to determine the in-situ density of soil, gravel and sand material at a specific layer up to a depth of 300mm as well as the moisture content of a surface layer.

02


Cored Specimens

This method is used to extract field specimens (cores) of site stabilized material. These specimens are then typically used to determine UCS or ITS of stablilised materials.

03


Sand Replacement

The sand replacement method is used to determine the in-situ density of a layer without a nuclear density gauge, and is used in situations where the nuclear density method is unsuitable.

04


Dynamic Cone Penetrometer (DCP)

Used to determine the resistance of the material as well as to interpolate the expected California Bearing Ratio.

05


Plate Load Test

This test is performed to determine the ultimate bearing capacity of soil and the probable settlement under a given load.

06


Asphalt and Concrete Coring

This method is used to extract field specimens (cores) of asphalt or concrete to determine layer thickness, BRD on asphalt specimens and the compressive strength in concrete structures.

07


Ball Penetration Test

The ball penetration test is used to simulate the embedment of stone chips that occurs during construction and under traffic loading.

08


Clegg Impact Hammer Testing

Measures soil strength and consolidation levels during trench re-instatement and to confirm uniform compaction over wide areas of ground.

9


Rolling Straight Edge

This method is used to determine the rideability of a specific road surface area.

10


Sampling of Materials

Obtaining of asphalt, soils, gravels, concrete or bitumen samples that are representative of the material used during construction phases

11


Dynamic Probe Super Heavy (DPSH)

A sacrificial cone is driven into soil to a depth of up to 20 meters to determine the expected bearing capacity of soils.

12


Falling Weight Deflectometer (FWD)

The Falling Weight Deflectometer (FWD) is currently the most practical system for accurately measuring a pavement’s deflection response when it is subject to a dynamic load.

13


International Roughness Index (IRI)

This test uses 3D laser sensors to measure surface roughness, texture and rutting. These values can be used to calculate ride comfort, surface friction and surface noise generation to international standards.

14


Walking profilometer

Smaller scale application to measure surface roughness, texture and transition irregularities, and surface rutting.

15


Model Mobile Load Simulator (MMLS 3)

An accelerated pavement testing tool applying realistic rolling wheel contact stress, to simulate traffic, moisture and temperature on the pavement layer that results in surface rutting.

16


Concrete crack width meter/camera

Investigate cracks width on concrete structures such as walls, tunnels, bridges etc. with photographic recording - accuracy of 0.01mm.

18


Proceq Concrete scanning

Non-destructive testing of concrete structures using stepped frequency continuous-wave ground penetrating radar to an effective depth exceeding 700mm.

19


Certification of a binder distributor

These tests are conducted for the fit-for-purpose certification of a binder distributor.

20


Marvil test

This test is used to determine the in-situ water permeability of bituminous surfacing. The results provide an indication of the material’s susceptibility to the ingress of water.

21


Texture depth measurement

This test is used to determine the texture of a road surface, also known as roughness.

22


Ball penetration

The ball penetration test is used to simulate the embedment of stone chips that occurs during construction and under traffic loading.

23


Cover meter testing

Determining the cover to embedded reinforcing in an existing concrete structure with the use of a rebar detector/cover meter.

24


Rebound hammer

This device measures the elastic properties or strength of concrete or rock, mainly surface hardness and penetration resistance.

25


Ultrasonic pulse velocity and echo

Scanning of sub-surface targets in concrete to determine strength and quality, evaluating slab thickness and the severity of honey combing.

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