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The quest for quality : avenues to monitor layer thickness during paving operations : a technology scan and assessment

Harmsen, G. (2021) The quest for quality : avenues to monitor layer thickness during paving operations : a technology scan and assessment.

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Abstract:This paper is a state-of-the art review of non-destructive technologies that show potential for monitoring the asphalt layer thickness during paving operations. The monitoring of layer thickness fits the recent trend of changes towards a more controlled asphalt paving process based on the monitoring of several key parameters. Layer thickness is such a key parameter with a high impact on the quality of the product and the process. This research argues that the monitoring of layer thickness needs to be standardised in order to be able to control the asphalt layer thickness and to meet the desired thickness. In this paper two incentives are discussed for standardising the monitoring of layer thickness during paving operations, which are: a) the negative consequences of the current practice of measuring the layer thickness, and b) the potential of various technologies for measuring the layer thickness during paving operations. The potential of various technologies is reviewed in the context of technological functionalities through a literature review and by validating the results through expert interviews. The results show that the ground penetrating radar (GPR), the laser scanner (LIDAR) and the magnetic imaging topography (MIT) scanner have a high potential for the adoption in practice for measuring the layer thickness during paving operations. Nevertheless, these technologies still have some challenges that need to be resolved in order to be ready for the adoption in practice. To overcome these challenges developments are needed, which have been presented in a roadmap. By following the developments in the roadmap the challenges of each technology can be overcome, which opens up the road for the sector-wide standardisation of monitoring the layer thickness during paving operations.
Item Type:Essay (Master)
Faculty:ET: Engineering Technology
Programme:Civil Engineering and Management MSc (60026)
Link to this item:http://purl.utwente.nl/essays/86011
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