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MATERIALS TESTING

Sample & Field Testing

Nuclear Densities. Load Simulators. Material Sampling.

These largely non-destructive tests provide critical insights about the durability and quality of materials and roadworks.

Our accredited laboratories and mobile facilities are equipped to perform the following sample and field testing services according to testing standards set by ASTM, SANAS, BSI and more.

Sample & Field Testing

SERVICE OFFERING

01


Cored
Specimens

The method is used to extract field specimens (cores) of site stabilized material for laboratory testing.


02


Nuclear
Density

This indirect testing method can determine the in-situ density of soil, gravel and sand material at a specific layer up to a depth of 300mm. A backscatter method is used to determine the moisture content of a surface layer.


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)

This method establishes a rate of penetration into natural or compacted material. This penetration rate can be used to determine the resistance of the material as well as to interpolate a California Bearing Ratio.


05


Plate Load
Test

This is a field test performed to determine the ultimate bearing capacity of soil and the probable settlement under a given load. The plate is placed at the desired depth, then the load is applied gradually and the settlement for each increment of load is recorded.


06


Asphalt and
Concrete Coring

This method is used to extract field specimens (cores) of asphalt or concrete for laboratory testing.


07


Sand
Patch

This method is used to extract field specimens (cores) of asphalt or concrete for laboratory testing.


08


Ball Penetration
Test

This method describes the penetration resistance of a road surface, the results can be used when designing a stabilized road surface.


09


Clegg Impact Hammer
Testing

The Clegg Impact Soil Tester provides a means for measuring and controlling soil strength and consolidation levels during trench re-instatement. It is also used to confirm uniform compaction over wide areas of ground, identifying poorly compacted areas and ineffective rolling of materials.


10


Rolling
Straight Edge

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


11


Sampling of
Materials

Sampling of different material used during the construction such as asphalt, soils, gravels, concrete and bitumen to obtain a sample that is representative of the material used during construction phases.


12


Dynamic Probe
Super Heavy (DPSH)

DPSH Testing (Dynamic Probe Super Heavy) - This method consists of driving a sacrificial or fixed cone through soil to a depth of up to 20 meters, to determine expected bearing capacity of soils. The constant energy for this heavy weight dynamic cone penetrometer is a 63.5kg weight that is raised to a height 760mm and then dropped, driving the cone into the soil or other material being tested.


13


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. This is non-destructive testing technique.


14


International Roughness
Index (IRI)

Pave® Prof V2.0 is a modular system that uses 3D laser sensors to measure pavement profiles for applications such as highways and runways. It measures surface roughness, texture and rutting. It is capable of real-time continuous measurements of longitudinal and transverse profiles, rut depth and macro texture. These values can be used to calculate ride comfort, surface friction and surface noise generation to international standards.


15


Walking
profilometer

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


16


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.


17


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. Tests are conducted annually and include the certification of a binder distributor, validation of binder distributor dipstick, power and speed indicator test, pump system performance and transverse distribution.


20


Marvil
test

This test is used to determine the in-situ water permeability of bituminous surfacing. The permeability of the bituminous layer provides an indication of the interconnectivity of the voids in the layer. 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 (the 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

A Schmidt hammer, also known as a Rebound hammer or Concrete hammer test, is a device to measure the elastic properties or strength of concrete or rock, mainly surface hardness and penetration resistance.


25


Ultrasonic pulse velocity meter
(UPV)

Pulses of ultrasonic waves are transmitted into concrete structures to determine the uniformity of concrete, indicate voids, estimate the depth of surface voids and check on the effectiveness of crack repairs and severity of damage or deterioration of concrete.


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