Use of 3D laser scanning for flatness and volumetric analysis of mortar in facades Uso do escaneamento 3D laser para análise de planicidade e volumetria de argamassa em fachadas

Resumo The ongoing process of industrialization of construction sites encourages the use of new building systems that conflict with traditional techniques associated with the risks of incompatibilities and continuance of control fixed ideas with a significant variability. A practical example is the cement mortar for plastering, commonly used as a corrective factor for facade flatness failures caused by the inaccuracy of the plumb line, rudimentary method used in geometric control of concrete structures and facade of mapping during the execution of the work, favoring the accumulation of errors that reflect the mortar thickness, increasing consumption, losses and defects. Alternatively for improvement, this study analyzed through a case study, the innovative application of 3D laser scanning technology consolidated on the facade of a building to map the surface flatness of the facade and, in an unprecedented manner, to quantify the volume of mortar. The results showed the feasibility of the technique as a solution to accurately identify the critical areas of the facade on the peripheral concrete structure and masonry and calculate, based on the volumes, the financial impact associated with mortar overthicknesses in critical areas compared with the reductions thickness after treatment of these areas.

[1]  Antonio Adán,et al.  Filling Holes in 3D Meshes using Image Restoration Algorithms , 2008 .

[2]  Wolfgang Boehler,et al.  Investigating Laser Scanner Accuracy , 2005 .

[3]  George Vosselman,et al.  Knowledge based reconstruction of building models from terrestrial laser scanning data , 2009 .

[4]  Youssef M A Hashash,et al.  Integration of Construction As-Built Data Via Laser Scanning with Geotechnical Monitoring of Urban Excavation , 2006 .

[5]  Lucio Soibelman.  As perdas de materiais na construção de edificações : sua incidência e seu controle , 1993 .

[6]  Brian Curless,et al.  From range scans to 3D models , 1999, COMG.

[7]  Fernanda Nepomuceno Costa.  Processo de Produção de Revestimento de Fachada de Argamassa: Problemas e Oportunidades de Melhoria , 2005 .

[8]  Christian Früh,et al.  Data Processing Algorithms for Generating Textured 3D Building Facade Meshes from Laser Scans and Camera Images , 2005, International Journal of Computer Vision.

[9]  Holly E. Rushmeier,et al.  The 3D Model Acquisition Pipeline , 2002, Comput. Graph. Forum.

[10]  J. Gryzagoridis.  Laser Based Nondestructive Inspection Techniques , 2012 .

[11]  Burcu Akinci,et al.  Automatic Creation of Semantically Rich 3D Building Models from Laser Scanner Data , 2013 .

[12]  Steve Marschner,et al.  Filling holes in complex surfaces using volumetric diffusion , 2002, Proceedings. First International Symposium on 3D Data Processing Visualization and Transmission.

[13]  David Arditi,et al.  AUTOMATED PROGRESS CONTROL USING LASER SCANNING TECHNOLOGY , 2013 .

[14]  Edward J. Jaselskis,et al.  Pilot Study on Laser Scanning Technology for Transportation Projects , 2003 .

[15]  Flávio Augusto Picchi,et al.  Sistemas da qualidade: uso em empresas de construção de edifícios , 1993 .

[16]  Mani Golparvar-Fard,et al.  Evaluation of image-based modeling and laser scanning accuracy for emerging automated performance monitoring techniques , 2011 .