Interface Characteristics between Fiber-Reinforced Concrete and Ordinary Concrete Based on Continuous Casting

authored by: Minjin Cai, Hehua Zhu, Timon Rabczuk, Xiaoying Zhuang
Abstract: Economic limitations often hinder the extensive use of fiber-reinforced concrete in full-scale structures. Addressing this, the present study explored localized reinforcement at critical interfaces, deploying a novel synchronized casting mold that deviates from segmented casting interface studies. The research prioritized the flexural, compressive, and shear characteristics at the interface between fiber-reinforced concrete and ordinary concrete with continuous casting. The results demonstrated that polyethylene (PE) fibers significantly enhance anti-cracking capabilities, surpassing steel fibers in all mechanical tests. PE fibers’ high modulus of elasticity and tensile strength considerably augmented the interface’s bending resistance, facilitating better load transfer and capitalizing on the fibers’ tensile properties. Additionally, their low density and greater dispersion negated the sinking behavior typical of steel fibers, thereby strengthening the compressive capacity of the interface. Although a 0.75% PE fiber volume is ideal for ductility, volumes as low as 0.25% or 0.5% are economically viable if dispersion is optimal. Conversely, steel fibers, prone to sinking and clustering, offer inferior shear resistance at the interface than PE fibers, marking a significant finding for structural applications.
Organisation(s): Institute of Photonics
External Organisation(s): Tongji University
Bauhaus-Universität Weimar
Type: Article
Journal: Buildings
Volume: 14
No. of pages: 20
Publication date: 05.07.2024
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Architecture, Civil and Structural Engineering, Building and Construction
Electronic version(s): https://doi.org/10.3390/buildings14072062 (Access: Open)

BibTeX

@article{878fb4baf01b484cbf29f47320375876,
title = "Interface Characteristics between Fiber-Reinforced Concrete and Ordinary Concrete Based on Continuous Casting",
abstract = "Economic limitations often hinder the extensive use of fiber-reinforced concrete in full-scale structures. Addressing this, the present study explored localized reinforcement at critical interfaces, deploying a novel synchronized casting mold that deviates from segmented casting interface studies. The research prioritized the flexural, compressive, and shear characteristics at the interface between fiber-reinforced concrete and ordinary concrete with continuous casting. The results demonstrated that polyethylene (PE) fibers significantly enhance anti-cracking capabilities, surpassing steel fibers in all mechanical tests. PE fibers{\textquoteright} high modulus of elasticity and tensile strength considerably augmented the interface{\textquoteright}s bending resistance, facilitating better load transfer and capitalizing on the fibers{\textquoteright} tensile properties. Additionally, their low density and greater dispersion negated the sinking behavior typical of steel fibers, thereby strengthening the compressive capacity of the interface. Although a 0.75% PE fiber volume is ideal for ductility, volumes as low as 0.25% or 0.5% are economically viable if dispersion is optimal. Conversely, steel fibers, prone to sinking and clustering, offer inferior shear resistance at the interface than PE fibers, marking a significant finding for structural applications.",
keywords = "economic efficiency, fiber concrete, interface, localized reinforcement",
author = "Minjin Cai and Hehua Zhu and Timon Rabczuk and Xiaoying Zhuang",
note = "Publisher Copyright: {\textcopyright} 2024 by the authors.",
year = "2024",
month = jul,
day = "5",
doi = "10.3390/buildings14072062",
language = "English",
volume = "14",
journal = "Buildings",
issn = "2075-5309",
publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",
number = "7",
}