Extreme-Ductility ECC Extension Paper Request List

Book anchor: Victor C. Li, Engineered Cementitious Composites (ECC), Springer 2019. This list is for the extension layer: papers that trace the lineage of ECC ductility enhancement beyond the book's core synthesis.

Purpose

Collect papers that intentionally improve ECC tensile ductility or combine high strength with high ductility. These papers will support the Atlas node 02_concepts/extreme_ductility_ecc.md and build a genealogy of ductility-enhancement strategies.

Inclusion criteria

A paper belongs here if it addresses at least one of the following:

1. Tensile strain capacity substantially above standard ECC benchmarks.
2. High-strength plus high-ductility ECC / SHCC / HPFRCC.
3. Interface tailoring, fiber selection, or fiber-strength strategy specifically aimed at increasing tensile ductility.
4. Flaw-size / matrix-tailoring strategy aimed at saturated multiple cracking.
5. Processing, rheology, fiber dispersion, or orientation strategy that improves ductility robustness.
6. Direct comparison of high ductility vs high strength, UHPC/UHPFRC, HSC, SHCC, or HPFRCC.

Minimum metadata to collect per paper

Seed papers already in Atlas

These are already ingested and should be treated as lineage roots or mechanism precedents, not necessarily as latest extension papers:

• Li & Leung 1992 — steady-state and multiple cracking theory.
• Li, Wang & Wu 2001 — high-ductility PVA-ECC benchmark.
• Li et al. 2002 — PVA-ECC interface tailoring.
• Kanda & Li 2006 — practical criteria for saturated PSH.
• Wang & Li 2004 — artificial flaw route to saturated strain hardening.
• Li & Wang 2006 — microstructure variability and robust composite properties.
• Yang et al. 2008 — refined fiber-bridging law.
• Li & Li 2012/2013 — rheology/fiber dispersion and robust ductility.
• Zhou et al. 2012 — mixing sequence / fiber distribution.
• Tosun-Felekoglu et al. 2014 — flaw size + fiber distribution + ductility.
• Lu, Li & Leung 2018 — μCT flaw geometry and cracking strength.

Priority A — high-strength and high-ductility ECC / concrete

Known citation clue from Victor Li book Chapter 2 reference list:

• Ranade, R., Li, V.C., Stults, M.D., Rushing, T.S., Roth, J., Heard, W.F. (2013). Micromechanics of high-strength, high-ductility concrete. ACI Materials Journal, 110(4), 375–384.
• Needed for: high-strength + high-ductility lineage.
• Atlas nodes: extreme_ductility_ecc, micromechanics_based_design, strain_hardening_criteria, direct_tensile_test.
• Priority: high.
• Status: PDF supplied and connected as 00_sources/extreme_ductility_extension/originals/ranade-2013-composite-properties-of-high-strength-high-ductility.pdf.

Priority B — ultra-ductility / extreme tensile strain capacity ECC

Papers needed:

• PE-ECC or PVA-ECC papers reporting unusually high tensile strain capacity, especially >5% or explicitly described as ultra-ductile.
• Studies that raise ductility through fiber/interface/flaw/process control while preserving controlled crack width.
• Comparative papers distinguishing extreme tensile ductility from high compressive strength.

Status: citation extraction and PDF acquisition needed.

Priority C — mechanism-specific ductility enhancement

Papers needed by route:

1. Interface route: oil coating, surface treatment, chemical bond reduction, slip-hardening control.
2. Flaw route: artificial flaws, matrix toughness reduction, pore/flaw distribution engineering.
3. Fiber route: PE/PVA fiber design, fiber strength, fiber diameter/length, hybrid fiber systems.
4. Processing route: rheology, fiber dispersion, orientation, mixing sequence, extrusion or spraying effects.
5. Matrix route: high-strength matrix, high-volume SCM matrix, low-carbon matrix retaining ductility.

Batch ingestion status — 2026-08-18

A 58-paper AI-processed extreme-ductility ECC batch has been ingested into the Atlas.

00_sources/extreme_ductility_extension/
├── full_text/
├── source_notes/
├── paper_cards/
├── originals/          # PDFs not included in this batch
└── metadata/

03_papers/extreme_ductility_extension/
07_visualization/extreme_ductility_extension_claim_evidence_matrix.csv
07_visualization/extreme_ductility_extension_edges.csv

Generated outputs:

• Source index: 00_sources/extreme_ductility_extension/metadata/extreme_ductility_extension_source_index.csv
• Claim-evidence matrix: 07_visualization/extreme_ductility_extension_claim_evidence_matrix.csv
• Node supporting-source updates: extreme_ductility_ecc, strain_hardening_criteria, green_ecc, fiber_bridging_law, flaw_design, direct_tensile_test, single_fiber_pullout, and related extension nodes.
• Graph edges appended to 07_visualization/full_graph_candidate_edges.csv and 07_visualization/edge_list_expanded.csv.

Processing workflow for future PDFs / batches

For future original PDFs or batch updates, use the current extension layout:

00_sources/extreme_ductility_extension/
├── originals/          # put supplied PDFs here
├── full_text/
├── source_notes/
├── paper_cards/
└── metadata/

Paper cards should be mirrored to:

03_papers/extreme_ductility_extension/

Recommended matrices and graph files:

07_visualization/extreme_ductility_extension_claim_evidence_matrix.csv
07_visualization/extreme_ductility_extension_edges.csv

User action requested

If available, provide the original PDFs corresponding to the ingested source notes so 00_sources/extreme_ductility_extension/originals/ can be completed. Otherwise the current batch is usable as a verified-from-extracted-text/source-note extension layer.

Original PDF supply status — 2026-08-18

• Newly supplied original PDFs copied: 10 files, including duplicate aliases for Wang 2004 and Li 2001.
• Source records now with matching originals: 5 / 59.
• Remaining request list: 00_sources/extreme_ductility_extension/metadata/missing_original_pdf_request_list.md.