eprintid: 24834 rev_number: 20 userid: 4439 dir: disk0/00/02/48/34 datestamp: 2015-05-20 17:46:55 lastmod: 2019-02-02 15:55:25 status_changed: 2015-05-20 17:46:55 type: article metadata_visibility: show contact_email: pir3@pitt.edu item_issues_count: 0 eprint_status: archive creators_name: Rizzo, P creators_name: Ni, X creators_name: Nassiri, S creators_name: Vandenbossche, J creators_email: pir3@pitt.edu creators_email: creators_email: creators_email: jmv7@pitt.edu creators_id: PIR3 creators_id: creators_id: creators_id: JMV7 creators_orcid: 0000-0002-7159-2221 creators_orcid: creators_orcid: creators_orcid: title: A solitary wave-based sensor to monitor the setting of fresh concrete ispublished: pub divisions: sch_eng_civilenvironmental full_text_status: public abstract: We present a proof-of-principle study about the use of a sensor for the nondestructive monitoring of strength development in hydrating concrete. The nondestructive evaluation technique is based on the propagation of highly nonlinear solitary waves (HNSWs), which are non-dispersive mechanical waves that can form and travel in highly nonlinear systems, such as one-dimensional particle chains. A built-in transducer is adopted to excite and detect the HNSWs. The waves are partially reflected at the transducer/concrete interface and partially transmitted into the concrete. The time-of-flight and the amplitude of the waves reflected at the interface are measured and analyzed with respect to the hydration time, and correlated to the initial and final set times established by the penetration test (ASTM C 403). The results show that certain features of the HNSWs change as the concrete curing progresses indicating that it has the potential of being an efficient, cost-effective tool for monitoring strengths/stiffness development. © 2014 by the authors; licensee MDPI, Basel, Switzerland. date: 2014-07-14 date_type: published publication: Sensors (Switzerland) volume: 14 number: 7 pagerange: 12568 - 12584 refereed: TRUE issn: 1424-8220 id_number: 10.3390/s140712568 citation: Rizzo, P and Ni, X and Nassiri, S and Vandenbossche, J (2014) A solitary wave-based sensor to monitor the setting of fresh concrete. Sensors (Switzerland), 14 (7). 12568 - 12584. ISSN 1424-8220 document_url: http://d-scholarship-dev.library.pitt.edu/24834/1/sensors-14-12568.pdf document_url: http://d-scholarship-dev.library.pitt.edu/24834/4/licence.txt