{"id":12957,"date":"2026-07-03T11:55:10","date_gmt":"2026-07-03T09:55:10","guid":{"rendered":"https:\/\/www.akustikforschung.de\/?p=12957"},"modified":"2026-07-07T10:29:37","modified_gmt":"2026-07-07T08:29:37","slug":"opto-akustisches-in-situ-pruefverfahren-fuer-oberbau-von-strassen","status":"publish","type":"post","link":"https:\/\/www.akustikforschung.de\/en\/unternehmen\/fallstudien\/opto-akustisches-in-situ-pruefverfahren-fuer-oberbau-von-strassen\/","title":{"rendered":"Opto-acoustic in-situ testing method for road pavements"},"content":{"rendered":"

\"non-destructive<\/a><\/p>\n

Roads are a cornerstone of modern mobility and the economy. Their sustainable maintenance requires precise knowledge of the condition of the materials used in their construction.<\/p>\n

As part of a current collaborative project by the Gesellschaft f\u00fcr Akustikforschung Dresden mbH, a novel, non-destructive in-situ testing method is being developed that, for the first time, enables a comprehensive, depth-resolved assessment of bound pavement layers.<\/p>\n

<\/p>\n

Motivation<\/h2>\n

Test methods currently available provide only limited information about the structural condition of roads. In particular, there is a lack of non-destructive methods that can provide insights into the mechanical properties and the layer structure beneath the surface. This makes it difficult to plan maintenance measures effectively and often leads to the inefficient use of resources.<\/p>\n

The goal of this research project is to develop an opto-acoustic measurement technique that can be used to assess the structural condition of roads in a non-destructive, comprehensive, and cost-effective manner. This is intended to enable a significantly improved evaluation of road structures and a more precise prediction of their remaining service life.<\/p>\n

The method is based on the targeted excitation of acoustic waves in the pavement structure using high-energy laser pulses and their subsequent measurement. By combining modern measurement technology, signal processing methods, and physical modeling, conclusions can be drawn about material properties and layer structures. This is supplemented by validation through established testing methods and integration into existing road maintenance management systems.<\/p>\n

The methods developed enable a new level of quality in the assessment of road infrastructure condition. Public contracting authorities and infrastructure operators thus benefit from more informed decisions regarding rehabilitation measures, a more efficient use of resources, and an extended service life for traffic areas. In the long term, the method therefore contributes to a more sustainable and cost-effective development of infrastructure.<\/p>\n

Objectives<\/h2>\n

The detailed project objectives include:<\/p>\n