FULL-SCALE TESTING OF A MASONRY BUILDING MONITORED WITH SMART BRICK - PowerPoint PPT Presentation

FULL-SCALE TESTING OF A MASONRY BUILDING MONITORED WITH SMART BRICK SENSORS A. D’Alessandro 1 , A. Meoni 1 , E. García-Macías 1 , M. Gioffrè 1 , N. Cavalagli 1 , F. Ubertini 1 1 University of Perugia (Italy) 2 Universidad de Sevilla (Spain) DIPARTIMENTO DI ECCELLENZA antonella.dalessandro@unipg.it November 15 th , 2018

OVERVIEW AIM: Structural Health Monitoring of new and existing Masonry Structures  Motivation  Smart bricks:  Concept  Fabrication  Sensing characterization  Smart masonry:  Walls  Buildings  Conclusions November 15th, 2018 Full-scale testing of a masonry building monitored with smart 02 Antonella D’Alessandro, PhD brick sensors

MOTIVATION: Structural Health Monitoring Data analysis Structure to be monitored Acquisition Data system Instrumentation Selection and positioning of the sensors November 15th, 2018 Full-scale testing of a masonry building monitored with smart 03 Antonella D’Alessandro, PhD brick sensors

MOTIVATION: Self-sensing Structures Crack Acquisition system ( ( ( ( ( ( November Smart Sensor 15th, 2018 Full-scale testing of a masonry building monitored with smart 04 Antonella D’Alessandro, PhD brick sensors

SMART BRICK: Concept NANOFILLERS Percolation P Electrical conductivity R 0 R 0 - Δ R(P) P November Fu and Chung, 1995 15th, 2018 Full-scale testing of a masonry building monitored with smart 05 Antonella D’Alessandro, PhD brick sensors

SMART BRICK: Concept November 15th, 2018 Full-scale testing of a masonry building monitored with smart 06 Antonella D’Alessandro, PhD brick sensors

SMART BRICK: Fabrication clay (a) (b) (c) (d) preparation mechanical mixing nanomodified moulding of bricks of clay and clay fillers (h) (g) (f) (e) burning at drying in oven nanomodified embedding of 900 ° C bricks electrodes November 15th, 2018 Full-scale testing of a masonry building monitored with smart 07 Antonella D’Alessandro, PhD brick sensors

SMART BRICKS: Fillers Carbon Based Nanotubes Nanofibers Titania Graphene nanoplatelets Carbon Black Stainless steel microfibers Thermogravimetric analysis Stainless steel microfibers Carbon Nanofibers 100% 100,00% 99,86% 80% CNTs Mass Resulting 60% CB CNFs 40% TiO2 Steel 20% A. D'Alessandro, F. Ubertini, A.L. Materazzi, S. Laflamme, A. Downey, 9,01% 5,98% Novel nanocomposite clay brick for strain sensing in structural 1,46% November masonry, EEEIC17, 17 th IEEE International Conference on 0% 15th, 2018 20 300 500 700 900 Environment and Electrical Engineering , Milan june, 7-10, 2017 Burning temperature (°C) Full-scale testing of a masonry building monitored with smart 08 Antonella D’Alessandro, PhD brick sensors

SENSING CHARACTERIZATION  Electrical Performance  Electromechanical Behaviour  Hold loads  Cyclical loads  Smart Masonry  Walls  Building November 15th, 2018 Full-scale testing of a masonry building monitored with smart 09 Antonella D’Alessandro, PhD brick sensors

Electrical Performance November 15th, 2018 Full-scale testing of a masonry building monitored with smart 10 Antonella D’Alessandro, PhD brick sensors

Electrical Performance November A. D’Alessandro, A. Meoni, and F. Ubertini, “ Stainless Steel Microfibers for Strain-Sensing Smart Clay Bricks ,” 15th, 2018 Journal of Sensors , vol. 2018, Article ID 7431823, 8 pages, 2018. https://doi.org/10.1155/2018/7431823. Full-scale testing of a masonry building monitored with smart 11 Antonella D’Alessandro, PhD brick sensors

Electromechanical Behavior: hold loads   R R         S GF R GF  0 R 0 November 15th, 2018 Full-scale testing of a masonry building monitored with smart 12 Antonella D’Alessandro, PhD brick sensors

Electromechanical Behavior: hold loads N ORMAL B RICK S TEEL F IBER B RICK G AUGE F ACTORS 13 C OPPER P LATES November G RAPHITE - BASED RESIN 15th, 2018 Full-scale testing of a masonry building monitored with smart 13 Antonella D’Alessandro, PhD brick sensors

Electromechanical Behavior: cyclical loads A. Downey, A. D’Alessandro, S. Laflamme, F. Ubertini Smart bricks November for strain sensing and crack detection in masonry structures, Smart 15th, 2018 Materials and Structures 27(1) (2018) 015009 (15pp) 14 Antonella D’Alessandro, PhD

SMART MASONRY: Small Walls November A. Meoni, A. D'Alessandro, F. Ubertini, A. Downey, S. Laflamme Strain monitoring in masonry structures using smart 15th, 2018 bricks, (2018) Proceedings of SPIE 2018 - The International Society for Optical Engineering doi: 10.1117/12.2297526 Full-scale testing of a masonry building monitored with smart 15 Antonella D’Alessandro, PhD brick sensors

SMART MASONRY: Walls L C R 2 3 1 A. Downey, A. D’Alessandro, S. Laflamme, F. Ubertini Smart bricks for strain sensing and crack detection in masonry structures, November Smart Materials and Structures 27(1) (2018) 015009 (15pp) 15th, 2018 Full-scale testing of a masonry building monitored with smart 16 Antonella D’Alessandro, PhD brick sensors

SMART MASONRY: Walls November 15th, 2018 Full-scale testing of a masonry building monitored with smart 17 Antonella D’Alessandro, PhD brick sensors

SMART MASONRY: Walls November 15th, 2018 Full-scale testing of a masonry building monitored with smart 18 Antonella D’Alessandro, PhD brick sensors

SMART MASONRY: Buildings November 15th, 2018 Full-scale testing of a masonry building monitored with smart 19 Antonella D’Alessandro, PhD brick sensors

SMART MASONRY: Buildings Façade 4 November 15th, 2018 Full-scale testing of a masonry building monitored with smart 20 Antonella D’Alessandro, PhD brick sensors

CONCLUSIONS  Novel smart clay bricks doped nano- and micro-fillers with self- sensing abilities and their applications have been investigated.  Issues are related to the optimization of the preparation procedure (stability of the fillers at high temperature, choice of electrodes and inclusions, proportioning of fillers).  Electrical and electromechanical tests of the smart bricks demonstrate enhanced gauge factors.  Tests on walls and on full-scale specimens show that they can identify permanent changes due to progressive damages.  Smart bricks are promising for a quick assessments of a structural integrity of masonry constructions after important events as earthquakes. November 15th, 2018 Full-scale testing of a masonry building monitored with smart 21 Antonella D’Alessandro, PhD brick sensors

ACKNOWLEDGMENTS This project has received funding from the European Union’s “SMART -BRICK: Novel strain-sensing nanocomposite clay brick enabling Horizon 2020 research and innovation programme under the self- monitoring masonry structures” (protocol no. 2015MS5L27). Marie Skłodowska -Curie grant agreement No 765057 November 15th, 2018 Full-scale testing of a masonry building monitored with smart 22 Antonella D’Alessandro, PhD brick sensors

Thank you for your attention! antonella.dalessandro@unipg.it