Deflection Estimation Based on the Thermal Characteristics of Composite Deck Slabs Containing Macro-Synthetic Fibers.

Autor: Son DH; Department of Architectural Engineering, Hanyang University, Seoul 04763, Korea., Ahn HJ; Department of Architectural Engineering, Hanyang University, Seoul 04763, Korea., Chung JH; Department of Smart Architecture Civil Engineering, Daejin University, Pocheon, Gyeonggi-Do 11159, Korea., Bae BI; Department of Digital Architectural and Urban Engineering, Hanyang Cyber University, Seoul 04763, Korea., Choi CS; Department of Architectural Engineering, Hanyang University, Seoul 04763, Korea.
Jazyk: angličtina
Zdroj: Materials (Basel, Switzerland) [Materials (Basel)] 2021 Jul 20; Vol. 14 (14). Date of Electronic Publication: 2021 Jul 20.
DOI: 10.3390/ma14144052
Abstrakt: The purpose of this study was to evaluate the structural performance of composite deck slabs containing macro-synthetic fibers. after a fire by proposing a deflection estimation method for non-fireproof structural decks. Therefore, this study evaluated the fire resistance performance and deflection of deck slabs mixed with macro-synthetic fibers. Afterward, the deflection estimation method considering the thermal characteristics of concrete and deck plates was proposed. A material test was first conducted to evaluate the mechanical properties of concrete mixed with macro-synthetic fibers. This test found that the compressive strength and elasticity modulus of concrete mixed with macro-synthetic fibers was greater than that of general concrete. A flexural tensile test confirmed that residual strength was maintained after the maximum strength was achieved. The fire resistance of the deck slab was adequate even when a fire-resistant coating was not applied. The internal temperature was lowest for the specimen with macro-synthetic fibers. Deflection was evaluated using previously published equations and standards. The deflection evaluation confirmed that the temperature distribution should be applied differently in the estimation method that uses the thermal load of the deck slab.
Databáze: MEDLINE
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