Articles in Taxonomy

The HERMES transport research portal is launched!

The HERMES transport research portal is a central point for accessing transport research databases worldwide. This portal is a tool for researchers at all levels and aims to facilitate innovation and collaboration in transport research.

For more information go to Hermes project.

Measurement of permeability in situ: open-end test

In this method a constant head of 1 m of water is maintained on the soil. By continuously measuring the water to be added over a duration of at least 20 min, it is possible to determine the permeability of the subgrade soil.

Plate-bearing test for compaction control in road engineering – BRRC information leaflet A26

This operational precedure describes a plate-bearing test for checking the quality of road construction materials after laying (compaction control) or the residual quality of a fatigued road layer.

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German dynamic plate – BRRC Information leaflet F70

This device was originally developed in Germany and is used to determine the dynamic deformation modulus of embankments and base layers in road construction.

Light percussion sounding apparatus – BRRC information leaflet A25

A significant correlation between test results from a percussion sounding apparatus and the California Bearing Ratio (CBR value) has been established for fine soils ranging from silt to fine sandy soils I (D < 0,2 mm).

In a standardized form this equipment and test method can render invaluable services:

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