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http://dx.doi.org/10.5345/JKIBC.2021.21.1.021

Insulation Effect of Double Layered Bubble Sheet Application in Cold Weather Concrete and Initial Quality Control by Wireless Sensor Network  

Han, Min-Cheol (Department of Architectural Engineering, Cheong ju University)
Seo, Hang-Goo (Department of Architectural Engineering, Cheong ju University)
Publication Information
Journal of the Korea Institute of Building Construction / v.21, no.1, 2021 , pp. 21-29 More about this Journal
Abstract
The objective of this study is to evaluate the effect of the application of double layered bubble sheet on the curing of slab and wall concrete placed at the job site in cold weather and to offer a feasibility of Concrete IoT Management System(CIMS), which is wireless sensor network developed by the authors, to manage early age quality of the concrete in terms of temperature, maturity and strength development. Test results indicated that the application of bubble sheet enhances the insulation performance, which results in an increase of the temperature by around 1~20. 6℃. It is found that CIMS can gather the temperature, maturity and strength development data from the sensors embedded from 30 m far from CIMS successfully. Predicted compressive strengths by CIMS had good agreement with measured ones within 2 MPa error level until 7 days. It is thought that the combination of the bubble sheet application for cold weather protection and CIMS for quality management tool in cold weather concreting contributes to shorten the time for the form removal by one day.
Keywords
bubble sheet; concrete IoT management system; maturity; cold weather concrete; strength development;
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