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http://dx.doi.org/10.5345/JKIBC.2021.21.4.293

Experimental Study on the Development of Void Precast Concrete Slab using Rubber Tube Mold for Inner Core  

Bae, Kyu-Woong (Department of Architecture-Urban Engineering, Korea Institute of Civil Engineering & Building Technology)
Hong, Sung-Yub (Technology Development Team, Camus E&C)
Publication Information
Journal of the Korea Institute of Building Construction / v.21, no.4, 2021 , pp. 293-303 More about this Journal
Abstract
The void PC slab has a structurally reasonable cross-section by forming the hollow section of the neutral axis that is unnecessary for bending behavior. Domestic PC factories have introduced automation equipment to produce hollow PC slabs, and are achieving hollow sections through inserts. However, since the excessive initial investment cost of the PC factory is the main factor in the increase in production cost, other alternatives are needed. Therefore, in this study, when producing hollow PC slab members, by using a rubber tube as a formwork to form an internal hollow space, it is intended to contribute to securing productivity through molding various hollow shapes, making it larger, lightweight, and enabling rapid production. To implement a hollow PC slab using a rubber tube mold, the shape of a hollow cross-section in which the tube is combined was implemented by considering the shape of the rubber tube first. In addition, to secure the concrete quality of the hollow part, the finish properties of the rubber tube mold and concrete were evaluated, and the hollow PC production process was established.
Keywords
precst concrete; void slab; hollow core slab; rubber tube mold; factory production process;
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