Zhou et al. (2010) — Development of Engineered Cementitious Composites with Limestone Powder and Blast Furnace Slag

Citation

Zhou, J., Qian, S., Sierra Beltran, M. G., Ye, G., van Breugel, K., & Li, V. C. (2010). Development of engineered cementitious composites with limestone powder and blast furnace slag. Materials and Structures, 43(6), 803–814.

DOI: 10.1617/s11527-009-9549-0
Atlas layer: core
Related Victor Li book chapter: Chapter 4: Pseudo Strain-Hardening Criteria & Chapter 7: Polyvinyl Alcohol (PVA) Fibers & Chapter 9: Green ECC (Limestone Powder and Slag Blends, pp. 307–342)
Source PDF: zhou-2010-development-of-engineered-cementitious-composites-with.pdf
Extracted text: full_text/zhou-2010-development-of-engineered-cementitious-composites-with_full_text.md
Source note: source_notes/zhou-2010-development-of-engineered-cementitious-composites-with_source_note.md

Why this paper matters

A landmark experimental and microstructural study co-authored by Victor C. Li and the TU Delft Microlab team demonstrating that Portland cement can be reduced to as low as 15 wt% of total binder powder by combining limestone powder (LP) and blast furnace slag (BFS), achieving 3.30 % tensile ductility and tight crack widths (57 $\mu\text{m}$) while cutting cement consumption by 85 %.

Main contribution

Formulates ultra-green ECC mixes with Portland cement content reduced to only 15 wt% of total powder by mass, utilizing ternary blends of Portland cement, ground granulated blast furnace slag (BFS), and limestone powder (LP).
Develops an industrially simplified two-component mix utilizing commercial blast furnace slag cement (CEM III/B: 70 % slag, 30 % PC) blended with limestone powder.
Employs Environmental Scanning Electron Microscopy with Backscattered Electrons (ESEM-BSE) to characterize matrix hydration products, pore structure, and fiber-matrix interfacial transition zones.
Demonstrates that the 15 % PC ternary mix achieves a 28-day compressive strength of 38.2 MPa, direct tensile strain capacity of 3.30 %, ultimate tensile strength of 4.5 MPa, and microcrack width of $57\ \mu\text{m}$.
Confirms that the two-component CEM III/B + LP composite achieves $f_c = \mathbf{40.1\text{ MPa}}$, $\epsilon_u = \mathbf{3.10\%}$, and crack widths under $76\ \mu\text{m}$.
Cuts composite carbon footprint by approximately 75 % relative to standard M45 ECC.

Evidence summary

Material Formulations:
Ternary System: CEM I 52.5 N (15 wt%) + Blast Furnace Slag (45 wt%) + Limestone Powder (40 wt%), micro-silica sand ($d_{50} = 170\ \mu\text{m}, \text{sand/binder} = 0.36$), $w/b = 0.28$.
Binary System: Commercial Blast Furnace Cement CEM III/B 42.5 N LH/HS (50 wt%) + Limestone Powder (50 wt%), $w/b = 0.28$.
Fiber Specifications: Kuraray REC15 PVA fibers ($V_f = 2.0\text{ vol. \%}, l_f = 12\text{ mm}, d_f = 39\ \mu\text{m}, \sigma_f = 1600\text{ MPa}, E_f = 41\text{ GPa}$, 1.2 wt% oil-coated).
Mechanical Validation across Systems (28 Days):
15% PC Ternary Mix: $f_c = \mathbf{38.2\text{ MPa}}$, $\sigma_u = \mathbf{4.5\text{ MPa}}$, $\epsilon_u = \mathbf{3.30\%}$, $w_m = \mathbf{57\ \mu\text{m}}$ (multiple cracking: $> 25$ cracks).
CEM III/B Binary Mix: $f_c = \mathbf{40.1\text{ MPa}}$, $\sigma_u = \mathbf{4.3\text{ MPa}}$, $\epsilon_u = \mathbf{3.10\%}$, $w_m = \mathbf{76\ \mu\text{m}}$.
Microstructural Observations (ESEM-BSE):
Limestone powder acts as an inert micro-filler and heterogeneous nucleation template, refining pore connectivity without excessive chemical bonding on PVA fibers.
Slag provides latent hydraulic C-A-S-H formation that ensures long-term strength development.

Linked Atlas nodes

02_concepts/strain_hardening_criteria.md
05_experiments/single_fiber_pullout.md
02_concepts/flaw_design.md
04_material_systems/green_ecc.md
04_material_systems/pva_ecc.md
05_experiments/direct_tensile_test.md
02_concepts/circular_economy_materials.md
02_concepts/life_cycle_analysis.md

Relationship to Victor Li book

Extends Victor Li (2019) Chapter 4 (PSH Criteria), Chapter 7 (PVA Fibers), and Chapter 9 (Green ECC, pp. 307–342).
Validates the matrix tailoring principles for Green ECC: proves that inert limestone powder dilutes matrix fracture toughness $K_m$ and moderates fiber interfacial chemical bond $G_d$, allowing 85 % Portland cement replacement while preserving tight crack width control ($57\ \mu\text{m}$) and robust tensile strain capacity ($3.3\%$).

Claim-evidence rows to add

Atlas node	Claim	Evidence summary	Page/Figure/Table	Status
`04_material_systems/green_ecc.md`	Reducing Portland cement to 15 wt% using limestone powder and slag delivers 3.3 % tensile ductility and 57 um crack widths	Uniaxial direct tensile tests, four-point bending, and crack width microscopy	Section 3.2 & 3.3, Fig. 5-9, Table 3	verified_from_pdf
`02_concepts/circular_economy_materials.md`	ESEM-BSE shows limestone powder acts as an inert nucleation filler that refines pores without embrittling PVA fiber interfaces	ESEM backscattered electron microscopy and hydration analysis	Section 3.4, Fig. 10 & 11	verified_from_pdf

Verification status

PDF preserved: yes (zhou-2010-development-of-engineered-cementitious-composites-with.pdf)
Text extracted: yes (full_text/zhou-2010-development-of-engineered-cementitious-composites-with_full_text.md)
DOI verified: yes (10.1617/s11527-009-9549-0)
Metadata verified: yes (Mater. Struct., Vol. 43, No. 6, pp. 803–814, 2010)
Claim-evidence matrix ready: yes

Cautions

15 % PC ternary ECC has slower early strength gain (7-day compressive strength ~22 MPa) due to latent slag activation; moist curing during the first 7 days is essential.
High limestone powder dosage requires careful water reducer adjustment to maintain suitable thixotropic viscosity for fiber dispersion.