Geometrical and boundary condition effects on restrained shrinkage behavior of UHPFRC slabs
- Authors
- Yoo, Doo-Yeol; Banthia, Nemkumar; Yoon, Young-Soo
- Issue Date
- 1월-2018
- Publisher
- KOREAN SOCIETY OF CIVIL ENGINEERS-KSCE
- Keywords
- Ultra-high-performance fiber-reinforced concrete; Slab; Shrinkage crack resistance; Degree of restraint; Expanded polystyrene; Teflon sheet
- Citation
- KSCE JOURNAL OF CIVIL ENGINEERING, v.22, no.1, pp.185 - 195
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- KSCE JOURNAL OF CIVIL ENGINEERING
- Volume
- 22
- Number
- 1
- Start Page
- 185
- End Page
- 195
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/78499
- DOI
- 10.1007/s12205-017-0587-9
- ISSN
- 1226-7988
- Abstract
- Six large Ultra-High-Performance Fiber-Reinforced Concrete (UHPFRC) slabs were fabricated and tested to investigate the restrained shrinkage and cracking behaviors. The use of expanded polystyrene and Teflon sheets with two different slab thicknesses was considered to improve the shrinkage crack resistance. Free shrinkage was simultaneously measured to evaluate the degree of restraint according to the above test parameters. The test results showed that free shrinkage strains of -689 mu epsilon to -723 mu epsilon were obtained after 9 days, and prismatic specimens with a higher exposed surface area-to-volume ratio (S/V) had slightly higher free shrinkage strains than those with a lower S/V. Increasing the concrete slab thickness and using expanded polystyrene and Teflon sheets were effective at reducing the degree of restraint and improving the shrinkage crack resistance of the UHPFRC slabs. Among the various specimens, the slabs with the expanded polystyrene exhibited the lowest degree of restraint by 0.45 after 9 days.
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Collections - College of Engineering > School of Civil, Environmental and Architectural Engineering > 1. Journal Articles
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