- Control tests within the scope of ZTV Asphalt-StB 07/13

- Bitumen tests, ring and ball, breaking point, elastic recovery according to DIN EN 1426, DIN EN 1427, DIN EN 1427, DIN EN 12607-1

- In addition, we also test, among other things, the behaviour at low temperatures in the bending beam rheometer AL BBR test and

- The deformation properties in the dynamic shear rheometer AL DSR test (T-Sweep)

- Analysis of the composition of asphalt mixes

- Determination of the stability with the rutting test

- Drill core sampling 

- Non-destructive determination of the layer thickness with the Stratotest 4100

- Bearing capacity measurements with the Benkelman beam

- Flatness measurements (planograph inspection)

- Skid resistance measurements (SRT and SKM)

- Classification of the reusability of building materials, RuVA

- Preliminary investigations, road condition investigations

- Expert reports, damage analyses and remediation proposals

- Environmental analysis (pollutant loads)

Tests on aggregates

The aggregates used in road construction must meet various requirements to be approved as a building material in road construction in the respective countries. These requirements are regulated in various European standards, depending on the area of application concrete, asphalt, unbound layers or mortar.

In this field, we check the aggregates that are used in road construction - i.e., in asphalt, concrete or as layers without binders.

For this purpose, samples of individual products are taken every six months and then examined in the laboratory.

- Incoming building material tests

- Voluntary quality monitoring of natural aggregates

- Voluntary quality monitoring of aggregates made of RC material

- Voluntary quality control of aggregates from steel slag

- Environmental impact assessments

- Control tests according to ZTV SoB-StB

- Armourstones

Kiwa carries out the following tests with requirements according to the European standards:

- DIN EN 12620 - Aggregates for concrete

- DIN EN 13043 - Aggregates for asphalt

- DIN EN 13242 - Aggregates for unbound and hydraulically bound mixtures

- DIN EN 13285 - Unbound mixtures