Ding et al. (2018) — Basic mechanical properties of ultra-high ductility...

Citation

Yao Ding, Jiang-tao Yu, Ke-Quan Yu, Shi-lang Xu (2018). Basic mechanical properties of ultra-high ductility cementitious composites: From 40 MPa to 120 MPa. Composite Structures, Vol. 185, pp. 634-645.

DOI: 10.1016/j.compstruct.2017.11.034
Atlas layer: extension
Related Victor Li book chapter: Chapter 2: Micromechanics; Chapter 5: High-Strength ECC
Source PDF: ding-2018-basic-mechanical-properties-of-ultra-high.pdf
Extracted text: atlas/full_text/ding-2018-basic-mechanical-properties-of-ultra-high_full_text.md
Source note: atlas/source_notes/ding-2018-basic-mechanical-properties-of-ultra-high_source_note.md

Why this paper matters

Groundbreaking paper mapping the complete mechanical spectrum (compression, tension, shear) of PE fiber-reinforced Ultra-High Ductility Cementitious Composites (UHDCC) across compressive strengths from 43 to 115 MPa, proving that extreme tensile strain capacity (8.00–11.14%) is achievable across all strength grades.

Main contribution

Formulated UHDCC mixes across $w/b = 0.14\text{--}0.32$ covering compressive strengths from 43 to 115 MPa with 2.0 vol% PE fibers.
Demonstrated that tensile ductility is consistently maintained at 8.00–11.14% while tensile strength scales from 6.17 to 16.46 MPa.
Characterized compressive stress-strain curves ($\nu \approx 0.237$), failure modes, and pure shear behavior via Iosipescu testing with DIC.

Evidence summary

Tensile properties across strengths:
$w/b = 0.14$: $f_c = 115\text{ MPa}$, $\sigma_{tu} = 16.46\text{ MPa}$, $\varepsilon_{tu} = 8.00\%$, Strain energy = $1036\text{ kJ/m}^3$
$w/b = 0.16$: $f_c = 94\text{ MPa}$, $\sigma_{tu} = 13.21\text{ MPa}$, $\varepsilon_{tu} = 10.13\%$, Strain energy = $997\text{ kJ/m}^3$
$w/b = 0.18$: $f_c = 77\text{ MPa}$, $\sigma_{tu} = 11.35\text{ MPa}$, $\varepsilon_{tu} = 9.02\%$, Strain energy = $757\text{ kJ/m}^3$
$w/b = 0.22$: $f_c = 64\text{ MPa}$, $\sigma_{tu} = 9.53\text{ MPa}$, $\varepsilon_{tu} = 11.14\%$, Strain energy = $816\text{ kJ/m}^3$
$w/b = 0.32$: $f_c = 43\text{ MPa}$, $\sigma_{tu} = 6.17\text{ MPa}$, $\varepsilon_{tu} = 10.64\%$, Strain energy = $528\text{ kJ/m}^3$ (Table 4, page 638).
Compressive properties: Peak compressive strain 3000–4000 $\mu\varepsilon$, Poisson's ratio $\approx 0.237$.
Crack characteristics: 42–55 multiple cracks, crack spacing 1.45–1.90 mm, crack width 139–173 $\mu\text{m}$.

Linked Atlas nodes

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

Claim-evidence rows to add

Atlas node	Claim	Evidence summary	Page/Figure/Table	Status
`02_concepts/extreme_ductility_ecc.md`	UHDCC achieves direct tensile strain capacity of 8.0–11.1% across compressive strengths from 43 to 115 MPa with 2.0 vol% PE fibers.	Tensile strain capacity remained between 8.00% and 11.14% while tensile strength reached 16.46 MPa at $f_c = 115\text{ MPa}$.	Page 634, Abstract; Page 638, Table 4, Fig. 15	verified_from_pdf
`02_concepts/extreme_ductility_ecc.md`	At w/b = 0.14, UHDCC delivers compressive strength of 115 MPa, tensile strength of 16.46 MPa, and tensile strain energy of 1036 kJ/m³.	Uniaxial tensile peak stress reached 16.46 MPa with strain capacity of 8.00% and strain energy of 1036 kJ/m³.	Page 638, Table 4, Figs. 9, 15	verified_from_pdf

Verification status

PDF preserved: yes (ding-2018-basic-mechanical-properties-of-ultra-high.pdf)
Text extracted: yes (atlas/full_text/ding-2018-basic-mechanical-properties-of-ultra-high_full_text.md)
DOI verified: yes (10.1016/j.compstruct.2017.11.034)
Page/figure/table verified: yes
Claim-evidence matrix ready: yes

Cautions

Fine silica sand was used ($d_{max} = 181\ \mu\text{m}$); incorporating coarse aggregates requires re-engineering matrix toughness.
Water curing at 20 °C was used throughout.