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Title: Tensile performance of sustainable Strain-Hardening Cementitious Composites with hybrid PVA and recycled PET fibers
Authors: Yu, J
Yao, J
Lin, X 
Li, H
Lam, JYK
Leung, CKY
Sham, IML
Shih, K
Keywords: Crack pattern
Environmental impact
Hybrid fibers
Micromechanical modeling
Polyethylene terephthalate (PET) fibers
Solid waste recycling
Strain-hardening cementitious composite (SHCC)
Tensile performance
Issue Date: 2018
Publisher: Pergamon Press
Source: Cement and concrete research, 2018, v. 107, p. 110-123 How to cite?
Journal: Cement and concrete research 
Abstract: Strain-Hardening Cementitious Composite (SHCC) is a type of advanced construction material that can enhance the resiliency and durability of structures. However, the high cost of the constituents limits the wide application of SHCCs. To reduce the material cost and improve the sustainability, this study explores the potential of replacing commonly-used polyvinyl alcohol (PVA) fibers by recycled polyethylene terephthalate (PET) fibers. The potential of fiber hybridization was first evaluated using micromechanical modeling, and the ultimate tensile strain of hybrid-fiber SHCCs was estimated using a semi-empirical method. Then the tensile performance of SHCCs after standard curing and accelerated aging was experimentally evaluated, and the crack pattern development with increasing tensile strain was recorded. Satisfactory mechanical performance can be achieved even when 50% of PVA fibers are replaced by recycled PET fibers with surface treatment. In addition, using recycled PET fibers in SHCCs can significantly reduce the material cost and environmental impact.
ISSN: 0008-8846
EISSN: 1873-3948
DOI: 10.1016/j.cemconres.2018.02.013
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