The Effect of Conductive Alginate Capsules Encapsulating Rejuvenator (HealRoad Capsules) on the Healing Properties of 10 mm Stone Mastic Asphalt Mix

Conductive alginate capsules encapsulating a bitumen rejuvenator (HealRoad capsules) has demonstrated good healing abilities in pure bitumen and mortar mixes. HealRoad capsules can efficiently heal damage via induction heating. They also release the encapsulated rejuvenator, thereby rejuvenating aged bitumen. These findings indicate that...

European national road authorities and circular economy An insight into their approaches

The pavement engineering industry, having realized the significance of the impacts that it imposes on the environment through the production, construction and management of its products and assets, has been driven towards a more sustainable and circular way of operating. This has partly been through asphalt recycling, which is an area that many...

Flexible concrete: A new approach to pavement materials

As modern society is striving to become more sustainable and environmentally friendly, the need for more durable constructions with longer life cycles is increasing. On the other hand, the functional properties of constructions -such as pavements- need to remain at least at the same level or even outperform the current ones as higher quality...

Harvesting roadway solar energy-performance of the installed infrastructure integrated pv bike path

Solar road technology provides an opportunity to harvest the vast, albeit dispersed, photovoltaic (PV) energy, while maximizing the land utilization. Deriving experience from the pioneering 70-m solar bike path installed in the Netherlands, this paper highlights the operational challenges and performance parameters using the first-year measured...

The influence of boundary conditions on the healing of bitumen

Damage in pavements is known to reduce over time when the material is left to rest, this phenomenon is identified as healing. It has been shown that healing has a large influence on pavement performance. However, as the healing mechanism is not fully understood, there is currently no accepted method available to assess the healing performance of...

Set-up for establishing residual service-life monitoring of bearing capacity and road design of Dutch highways

Automated road survey and pavement management on porous asphalt

Carbon footprint comparison of innovative techniques in the construction and maintenance of road infrastructure in The Netherlands

The ambition of European countries to reduce their national greenhouse gas emissions, has been translated in the Netherlands in green procurement policy of the national road administration. An increasing amount of innovative techniques and approaches in road infrastructure construction and maintenance are available, but their contribution to...

Additional guidelines for the execution of tyre-road noise measurements with a CPX (Close Proximity) measurement trailer

The Dutch practice of assessment of the noise reducing properties of pavements according to the CPX (Close Proximity) Method has revealed that relatively large differences may occur between test results produced by different CPX operators. Due to these differences road authorities are facing questions and uncertainties about the acoustical...

Aanvullende richtlijnen voor de uitvoering van band-wegdekgeluidmetingen met een CPX (Close Proximity)-meetaanhanger

In de Nederlandse praktijk van het meten van de geluidsreductie van wegdekken met behulp van de CPX-methode [1] is gebleken dat er tussen de resultaten van verschillende uitvoerders van deze methode relatief grote verschillen bestaan die voor opdrachtgevers leiden tot vragen en onduidelijkheden over de akoestische kwaliteit van de gemeten...

Comparison of CPX systems with Round Robin Test

The CPX method (ISO/CD 11819-2) is regularly used for assessing the acoustic quality of road surface within the frame work of checking with compliance to contract requirements nd conformity-of-production. The reproducibility of the test procedure is investigated ith a Round Robin test in which 7 operators of CPX systems, coming from Belgium,...

Crack repair of asphalt concrete with induction energy

It is well known that the healing rates of asphalt courses increase with the temperature. A new method, induction heating, is used in this paper to increase the lifetime of asphalt concrete pavements. Mastic will be first made electrically conductive by the addition of conductive fibers. Then it will be heated via induction energy. This will...

From texture to braking deceleration

Nowadays its becomes more and more important to combine safe and comfortable mobility to a safe and liveable environment. For many decades the structural aspects of road constructions have been the subjects of many research activities. Only since the late 80's surface characteristics have been researched in order to give the pavement designer...