CPX comparison measurements in the Netherlands

The high reliability of the G+P CPX system has been proven again. In order to calibrate the CPX measuring systems, so-called Round Robin Tests are regularly carried out in the Netherlands with various CPX measuring systems. On invitation, G+P also went along in 2020. The results of our measuring system are excellent. Of the 8 different systems, the one from G+P is closest to the reference with excellent repeatability on porous as well as dense coatings.

CPX comparison measurements in the Netherlands

The tests were conducted in September 2020 in the province of Gelderland on two different pavements. The test sections consisted of 1020 meters of porous asphalt (DLPAC) and 2x600 meters of SMA-NL 11B pavements, which were measured at 24 °C. Each section was measured 6 times by each participant.

Overall, the G+P measurement system performed exceptionally well. The overall result across all measurements on both pavements shows that the G+P system performed best of all systems measured and was closest to the reference overall.

Messung Diagram

The results of these Round Robin measurements in the Netherlands prove the high quality of G+P's CPX measurements and their informative value and repeatability, which our customers have been enjoying for years.

All details about the measurements in Holland can be found in the linked report. 
 

Related links

Similar articles

CPX road surface measurements - commitment to research and standardisation pays off

CPX road surface measurements - commitment to research and standardisation pays off

Road noise is significantly influenced by the acoustic properties of road surfaces. In order to record these, G+P introduced the first CPX measurement system in Switzerland in 2008. Almost 15 years of know-how and continuous development of the measurement system, through research and standardisation work, have paid off. Our customers benefit from reliable and robust results with the highest repeatability. For the canton of Fribourg, which is fully committed to “whispering” road surfaces, accurate measurement results are essential for the implementation of its noise protection strategy.
Low-noise road surfaces – Complete advice from a single source

Low-noise road surfaces – Complete advice from a single source

Nowadays, a road surface must not only fulfil safety aspects. It should also be as cheap and durable as possible, be able to withstand the emerging traffic load and cause as little noise as possible in densely built-up Switzerland. Low-noise road surfaces are often a good choice here. However, the enforcement authorities responsible for the roads are repeatedly confronted with the following questions: How noisy is the existing pavement? Which low-noise pavement is optimal on which road section? How effective is the newly installed low-noise pavement? Is there potential for optimisation? Grolimund und Partner provides answers to these questions.