{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,14]],"date-time":"2025-05-14T12:53:18Z","timestamp":1747227198520,"version":"3.40.5"},"posted":{"date-parts":[[2020,4,14]]},"group-title":"oral","reference-count":0,"publisher":"Copernicus GmbH","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"\n &lt;p&gt;Road pavements are subject to a range of problems due to traffic and temperature variations&amp;#160;&lt;\/p&gt;&lt;p&gt;producing cracks that propagate to the pavement surface. Cracks need to be assessed to avoid&amp;#160;&lt;\/p&gt;&lt;p&gt;deterioration and provide confidence in the functioning of the road system. Cracks are usually&amp;#160;&lt;\/p&gt;&lt;p&gt;maintained after visual inspection by filling with bitumen as a first rehabilitation technique to&amp;#160;&lt;\/p&gt;&lt;p&gt;avoid further deterioration and absorbing water leakages. Although this temporary solution does&amp;#160;&lt;\/p&gt;&lt;p&gt;not extend the pavement life cycle it can help to avoid additional problems occurring within the&lt;\/p&gt;&lt;p&gt;pavement. This work is proposed to aid the development of understanding and characterization&lt;\/p&gt;&lt;p&gt;of cracks filled with bitumen in both rigid and asphalt pavements.&lt;\/p&gt;&lt;p&gt;This study reports on the results of several laboratory experiments that were performed to&amp;#160;&lt;\/p&gt;&lt;p&gt;explore the capability of Ground Penetrating Radar (GPR) in the assesment of bitumen-filled&amp;#160;&lt;\/p&gt;&lt;p&gt;cracks in both rigid and asphalt pavements, respectively. These tests were focused on the&amp;#160;&lt;\/p&gt;&lt;p&gt;analysis of cracking filled with bitumen using a GPR system equipped with a ground-coupled&amp;#160;&lt;\/p&gt;&lt;p&gt;antenna with a 2.3 GHz central frequency, and varying the antenna orientation with respect to the&amp;#160;&lt;\/p&gt;&lt;p&gt;crack axis.&lt;\/p&gt;&lt;p&gt;Results showed the variation in characterization and changes in amplitude that could be expected&amp;#160;&lt;\/p&gt;&lt;p&gt;when analysing bitumen-filled cracks in concrete and asphalt specimens, dependent upon the&amp;#160;&lt;\/p&gt;&lt;p&gt;antenna orientation being used; GPR B-scans were compared to images from computational&amp;#160;&lt;\/p&gt;&lt;p&gt;models using a Finite-Difference Time-Domain (FDTD) method-based software package&amp;#160;&lt;\/p&gt;&lt;p&gt;(gprMax2D). Additionally, a field survey carried out provided images consistent with the&lt;\/p&gt;&lt;p&gt;comparable conditions of the lab tests. The results of this work proved the capability of the GPR&lt;\/p&gt;&lt;p&gt;method to detect and characterize cracks filled with bitumen in pavements across a range of&amp;#160;&lt;\/p&gt;&lt;p&gt;crack dimensions and pavement types.&lt;\/p&gt;&lt;p&gt;&amp;#160;&lt;\/p&gt;&lt;p&gt;Keywords&lt;\/p&gt;&lt;p&gt;GPR, NDT, Rigid pavements, Asphalt Pavements, Cracks, Computational models, Target orientation,&lt;\/p&gt;&lt;p&gt;Pavement assessmen&lt;\/p&gt;\n <\/jats:p>","DOI":"10.5194\/egusphere-egu2020-20920","type":"posted-content","created":{"date-parts":[[2020,3,10]],"date-time":"2020-03-10T05:50:03Z","timestamp":1583819403000},"source":"Crossref","is-referenced-by-count":2,"title":["Incorporation of GPR data into characterization of the bitumen filled cracks in pavements: Lab and numerical study"],"prefix":"10.5194","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3079-0897","authenticated-orcid":false,"given":"Mezgeen","family":"Rasol","sequence":"first","affiliation":[]},{"given":"Vega P\u00e9rez","family":"Gracia","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1042-4985","authenticated-orcid":false,"given":"Mercedes","family":"Solla","sequence":"additional","affiliation":[]},{"given":"Jorge C.","family":"Pais","sequence":"additional","affiliation":[]},{"given":"Francisco M.","family":"Fernandes","sequence":"additional","affiliation":[]},{"given":"Caio","family":"Santos","sequence":"additional","affiliation":[]},{"given":"Sam","family":"Roberts","sequence":"additional","affiliation":[]}],"member":"3145","container-title":[],"original-title":[],"deposited":{"date-parts":[[2020,4,14]],"date-time":"2020-04-14T05:28:24Z","timestamp":1586842104000},"score":1,"resource":{"primary":{"URL":"https:\/\/meetingorganizer.copernicus.org\/EGU2020\/EGU2020-20920.html"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,4,14]]},"references-count":0,"URL":"https:\/\/doi.org\/10.5194\/egusphere-egu2020-20920","relation":{},"subject":[],"published":{"date-parts":[[2020,4,14]]},"subtype":"other"}}