Park et al. (2023) — Cementless ultra-ductile composites reinforced by polyethylene-based...

Citation

Se-Eon Park, Jeong-Il Choi, Huy Hoàng Nguyễn, Quang-Hiếu Lương, Phương Hoàng Nguyễn, Bang Yeon Lee (2023). Cementless ultra-ductile composites reinforced by polyethylene-based short selvedge fibers for sustainable and resilient infrastructure. Journal of Building Engineering, Vol. 68, Article 106198.

DOI: 10.1016/j.jobe.2023.106198
Atlas layer: extension
Related Victor Li book chapter: Chapter 4: Special ECCs / Geopolymers; Chapter 8: Life Cycle Assessment and Sustainability
Source PDF: park-2023-cementless-ultra-ductile-composites-reinforced-by.pdf
Extracted text: atlas/full_text/park-2023-cementless-ultra-ductile-composites-reinforced-by_full_text.md
Source note: atlas/source_notes/park-2023-cementless-ultra-ductile-composites-reinforced-by_source_note.md

Why this paper matters

Completely replaces both Portland cement and virgin synthetic fibers with industrial by-products (alkali-activated slag/fly ash binders and 18 mm cut PE-glass hybrid selvedge fabric waste), achieving 33.2 MPa compressive strength with 8.89% tensile ductility in AAS, and 21.9 MPa with 13.80% ductility in AAF while reducing material cost by up to 74%.

Main contribution

Replaced 100% of virgin PE fibers with recycled PE-glass selvage waste short fibers (84 wt% PE + 16 wt% S-glass core).
Synthesized ultra-ductile cementless composites: AAS-S (1.75 vol% fiber, $f_c = 33.2\text{ MPa}$, $\sigma_{tu} = 7.80\text{ MPa}$, $\varepsilon_{tu} = 8.89\%$) and AAF-S (2.0 vol% fiber, $f_c = 21.9\text{ MPa}$, $\sigma_{tu} = 6.96\text{ MPa}$, $\varepsilon_{tu} = 13.80\%$).
Reduced composite material costs by 71–74% ($254\text{--}336\text{ \$/m}^3$) and enhanced tensile toughness per unit embodied energy up to 8.4-fold compared to conventional ECC.

Evidence summary

Compressive strength: AAS-S reached $33.2 \pm 1.8\text{ MPa}$; AAF-S reached $21.9 \pm 1.3\text{ MPa}$ (Table 4, page 4).
Direct tensile properties:
AAS-S (Slag + Selvedge): $f_{cs} = 2.81\text{ MPa}$, $f_{ts} = 7.80 \pm 0.86\text{ MPa}$, $\varepsilon_{tu} = 8.89 \pm 0.23\%$, toughness $471\text{ kJ/m}^3$, 70.9 cracks (Table 5, page 5, Fig. 4b).
AAF-S (Fly ash + Selvedge): $f_{cs} = 3.02\text{ MPa}$, $f_{ts} = 6.96 \pm 0.33\text{ MPa}$, $\varepsilon_{tu} = 13.80 \pm 1.14\%$, toughness $688\text{ kJ/m}^3$, 39.3 cracks (Table 5, Fig. 4d).
Sustainability: Normalized toughness per carbon footprint ($2.22\text{ kJ/kg}$) is 1.9–12 times higher than prior ductile composites (Table 7, Figs. 9, 11).

Linked Atlas nodes

04_material_systems/green_ecc.md
02_concepts/extreme_ductility_ecc.md
02_concepts/strain_hardening_criteria.md
05_experiments/direct_tensile_test.md

Claim-evidence rows to add

Atlas node	Claim	Evidence summary	Page/Figure/Table	Status
`02_concepts/extreme_ductility_ecc.md`	Cementless composites reinforced with PE-glass selvedge waste fibers achieve 7.80 MPa tensile strength and 8.89% ductility in AAS matrices, and 6.96 MPa tensile strength and 13.80% ductility in AAF matrices.	JSCE direct tension testing on dumbbell specimens verified 8.89% and 13.80% tensile strain capacities.	Pages 1, 5, 9, Section 3.1 & Abstract, Table 5, Figs. 4, 7	verified_from_pdf
`04_material_systems/green_ecc.md`	Replacing virgin PE fibers and cement with short selvedge fibers and alkali-activated binders reduces material cost by up to 74% while increasing toughness per unit embodied energy up to 8.4-fold.	Life cycle MSI modeling and material cost analysis confirmed 71–74% cost reduction and 8.4x normalized toughness.	Pages 7, 9, Section 3.2, Table 7, Figs. 9c, 11	verified_from_pdf

Verification status

PDF preserved: yes (park-2023-cementless-ultra-ductile-composites-reinforced-by.pdf)
Text extracted: yes (atlas/full_text/park-2023-cementless-ultra-ductile-composites-reinforced-by_full_text.md)
DOI verified: yes (10.1016/j.jobe.2023.106198)
Page/figure/table verified: yes
Claim-evidence matrix ready: yes

Cautions

Average crack width in AAF-S ($275.0\ \mu\text{m}$) is wider than standard ECC ($<100\ \mu\text{m}$).