Infrastructure research

An infrastructure survey provides a single view of the quality of asphalt, foundations, and underlying soil for roads, dykes, and other linear elements. In the design phase, you already know what to expect.

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Infrastructure

What is an infrastructure study?

An infrastructure survey provides a single view of the quality of asphalt, foundations, and underlying soil for roads, dykes, and other linear elements. Municipalities use this method especially when they want to reconstruct or re-asphalt a road.

Landmeting met GPS-apparatuur tijdens infrastructureel onderzoek

Our approach

What are we investigating?

All layers of the road in one study.

01. Asphalt layer

We are investigating the asphalt layer for tar content. The likelihood of this being present in asphalt from before 1995 is greatest. In the case of asphalt from after 1995, the level of research is lower. Tar-containing asphalt must not be simply recycled and has different processing requirements.

02. Foundation

Under the asphalt there is often a layer of rubble or gravel as a foundation. We determine whether that can be reused for the new road or must be removed and replaced.

03. Underlying ground

We look at the environmental hygienic quality of the soil beneath the foundation and at the civil engineering suitability for reuse as a supplement.

04. Optional: infiltration testing

Nowadays, municipalities often want to decouple rainwater from the sewer network. In the same study, we then measure the permeability for a wadi or infiltration sewer design.

The advantage

One traffic measure, complete picture

Blocking a street costs money and causes inconvenience.

By combining all the surveys into one field round, you only have to take one traffic measure — and then you have all the information for the planning phase at hand.

For whom?

Municipalities during reconstruction works
Water authorities during dyke improvements
Provinces on provincial roads
Contractors preparing for an implementation project

FAQ

Frequently asked questions

Do you have a question? View the most frequently asked questions or contact us directly.

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How many boreholes or samples are being taken?

That depends on the length of the road and the level of detail desired. We work according to the applicable guidelines and agree in advance on the appropriate level of research coverage.

Is asphalt testing always necessary?

For asphalt from before 1995, tar content testing is almost always worthwhile. For newer asphalt, the level of testing is lower and in some cases no testing is necessary. We determine this in advance based on the date of construction and the available data.

In which project phase are we planning this?

Ideally, during the planning phase, before the work goes on the market. Then you can include the results in the tender documents.