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Experimental Validation of Slip-Forming Using Ultrasonic Sensors

Slip-forming in concrete construction enables the continuous placement of concrete using a climbing form, the efficiency of which depends on appropriate slip-up timing. This implies the importance of knowing accurately the development of concrete strength over time, which has been assessed manually...

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Autores principales: Yoon, Hyejin, Kim, Young Jin, Chin, Won Jong, Kang, Jun Won, Koh, Hyun-Moo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6891432/
https://www.ncbi.nlm.nih.gov/pubmed/31752423
http://dx.doi.org/10.3390/s19225053
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author Yoon, Hyejin
Kim, Young Jin
Chin, Won Jong
Kang, Jun Won
Koh, Hyun-Moo
author_facet Yoon, Hyejin
Kim, Young Jin
Chin, Won Jong
Kang, Jun Won
Koh, Hyun-Moo
author_sort Yoon, Hyejin
collection PubMed
description Slip-forming in concrete construction enables the continuous placement of concrete using a climbing form, the efficiency of which depends on appropriate slip-up timing. This implies the importance of knowing accurately the development of concrete strength over time, which has been assessed manually to date in construction fields. This paper presents a method for automating the slip-forming process by determining the optimal slip-up time using the in-situ strength of concrete. The strength of concrete is evaluated by a formula relating the strength to the surface wave velocity measured with ultrasonic sensors. Specifically, this study validates the applicability of the slip-form system with ultrasonic sensors for continuously monitoring the hardening of concrete through its application in several construction sites. To this end, a slip-form system with a pair of ultrasonic modules at the bottom of the panel was tested and the time variation of surface wave velocity in the concrete material was monitored during the slip-forming process. The results show that the proposed method can provide the optimal slip-up time of the form to automate the slip-forming process. This approach is expected to apply to other construction technologies that required the continuous monitoring of concrete strength for construction efficiency as well as quality maintenance.
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spelling pubmed-68914322019-12-18 Experimental Validation of Slip-Forming Using Ultrasonic Sensors Yoon, Hyejin Kim, Young Jin Chin, Won Jong Kang, Jun Won Koh, Hyun-Moo Sensors (Basel) Article Slip-forming in concrete construction enables the continuous placement of concrete using a climbing form, the efficiency of which depends on appropriate slip-up timing. This implies the importance of knowing accurately the development of concrete strength over time, which has been assessed manually to date in construction fields. This paper presents a method for automating the slip-forming process by determining the optimal slip-up time using the in-situ strength of concrete. The strength of concrete is evaluated by a formula relating the strength to the surface wave velocity measured with ultrasonic sensors. Specifically, this study validates the applicability of the slip-form system with ultrasonic sensors for continuously monitoring the hardening of concrete through its application in several construction sites. To this end, a slip-form system with a pair of ultrasonic modules at the bottom of the panel was tested and the time variation of surface wave velocity in the concrete material was monitored during the slip-forming process. The results show that the proposed method can provide the optimal slip-up time of the form to automate the slip-forming process. This approach is expected to apply to other construction technologies that required the continuous monitoring of concrete strength for construction efficiency as well as quality maintenance. MDPI 2019-11-19 /pmc/articles/PMC6891432/ /pubmed/31752423 http://dx.doi.org/10.3390/s19225053 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Yoon, Hyejin
Kim, Young Jin
Chin, Won Jong
Kang, Jun Won
Koh, Hyun-Moo
Experimental Validation of Slip-Forming Using Ultrasonic Sensors
title Experimental Validation of Slip-Forming Using Ultrasonic Sensors
title_full Experimental Validation of Slip-Forming Using Ultrasonic Sensors
title_fullStr Experimental Validation of Slip-Forming Using Ultrasonic Sensors
title_full_unstemmed Experimental Validation of Slip-Forming Using Ultrasonic Sensors
title_short Experimental Validation of Slip-Forming Using Ultrasonic Sensors
title_sort experimental validation of slip-forming using ultrasonic sensors
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6891432/
https://www.ncbi.nlm.nih.gov/pubmed/31752423
http://dx.doi.org/10.3390/s19225053
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