Material and structural performance evaluation of recycled PET fiber reinforced concrete

Most PET bottles used as beverage containers become waste after their usage, causing environmental problems. To address this issue, a method to recycle wasted PET bottles is presented, in which short fibers made from recycled PET are used within structural concrete. To verify the performance capacit...

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Bibliographic Details
Published in:Cement & concrete composites 2010-03, Vol.32 (3), p.232-240
Main Authors: Kim, Sung Bae, Yi, Na Hyun, Kim, Hyun Young, Kim, Jang-Ho Jay, Song, Young-Chul
Format: Article
Language:English
Subjects:
Compressive strength
Concrete
Cracking
Drying shrinkage
Ductility
Fiber reinforced concretes
Fracture mechanics
PET fiber
Polyethylene terephthalates
Polypropylenes
PP fiber
Recycle
Recycled
Reinforced concrete
Ultimate tensile strength
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Summary:Most PET bottles used as beverage containers become waste after their usage, causing environmental problems. To address this issue, a method to recycle wasted PET bottles is presented, in which short fibers made from recycled PET are used within structural concrete. To verify the performance capacity of recycled PET fiber reinforced concrete, it was compared with that of polypropylene (PP) fiber reinforced concrete for fiber volume fractions of 0.5%, 0.75%, and 1.0%. Appropriate tests were performed to measure material properties such as compressive strength, elastic modulus, and restrained drying shrinkage strain. Flexural tests were performed to measure the strength and ductility capacities of reinforced concrete (RC) members cast with recycled PET fiber reinforced concrete. The results show that compressive strength and elastic modulus both decreased as fiber volume fraction increased. Cracking due to drying shrinkage was delayed in the PET fiber reinforced concrete specimens, compared to such cracking in non-reinforced specimens without fiber reinforcement (NF), which indicates crack controlling and bridging characteristics of the recycled PET fibers. Regarding structural member performance, ultimate strength and relative ductility of PET fiber reinforced RC beams are significantly larger than those of companion specimens without fiber reinforcement.
ISSN:0958-9465
1873-393X
DOI:10.1016/j.cemconcomp.2009.11.002