Book-Anchor Evidence Update Report

Confirmation

The ECC Research Atlas is now explicitly anchored to Victor C. Li, Engineered Cementitious Composites (ECC): Bendable Concrete for Sustainable and Resilient Infrastructure, Springer, 2019 (DOI 10.1007/978-3-662-58438-5) as its primary foundation. The 13 foundational papers preserved under 00_sources/foundational_papers/ and mirrored as cards under 03_papers/ are retained as supporting / verification sources. Each updated node now presents evidence in a book-first hierarchy under a single ## Anchor evidence section with two required subsections:

1. ### Primary book anchor — Victor C. Li 2019 book evidence.
2. ### Supporting foundational papers — supporting paper cards.

Files updated

1. 02_concepts/strain_hardening_criteria.md
2. 02_concepts/fiber_bridging_law.md
3. 02_concepts/flaw_design.md
4. 02_concepts/fiber_dispersion.md
5. 02_concepts/processing_rheology.md
6. 02_concepts/interface_properties.md
7. 05_experiments/direct_tensile_test.md
8. 05_experiments/crack_width_distribution.md
9. 02_concepts/distributed_microcracking.md
10. 02_concepts/micromechanics_based_design.md

Book source files used per node

• strain_hardening_criteria.md — 00_sources/victor_li_book/chapter2_key_evidence.md, 00_sources/victor_li_book/chapter2_equations_normalized.md, 00_sources/victor_li_book/claim_evidence_tables/02 micromechanics_claim_evidence_seed.md (Chapter 2 strength + energy criteria; 1.3 / 2.7 margins).
• fiber_bridging_law.md — 00_sources/victor_li_book/chapter2_key_evidence.md, 00_sources/victor_li_book/chapter2_equations_normalized.md (Chapter 2 sigma(delta), sigma_o, J_b0).
• flaw_design.md — 00_sources/victor_li_book/chapter2_key_evidence.md, 00_sources/victor_li_book/chapter4_key_evidence.md (Chapter 2 §2.5.3 artificial flaws; Chapter 4 mechanical evidence).
• fiber_dispersion.md — 00_sources/victor_li_book/chapter_seed_summaries.md (Chapter 3), 00_sources/victor_li_book/claim_evidence_tables/03 processing_claim_evidence_seed.md, 00_sources/victor_li_book/chapter2_key_evidence.md.
• processing_rheology.md — 00_sources/victor_li_book/chapter_seed_summaries.md (Chapter 3), 00_sources/victor_li_book/claim_evidence_tables/03 processing_claim_evidence_seed.md.
• interface_properties.md — 00_sources/victor_li_book/chapter2_key_evidence.md, 00_sources/victor_li_book/chapter_seed_summaries.md (Chapter 3).
• direct_tensile_test.md — 00_sources/victor_li_book/chapter4_key_evidence.md, 00_sources/victor_li_book/claim_evidence_tables/04 mechanical properties_claim_evidence_seed.md.
• crack_width_distribution.md — 00_sources/victor_li_book/chapter4_key_evidence.md, 00_sources/victor_li_book/chapter_seed_summaries.md (Chapter 7).
• distributed_microcracking.md — 00_sources/victor_li_book/chapter_seed_summaries.md (Chapter 1), 00_sources/victor_li_book/claim_evidence_tables/01 introduction_claim_evidence_seed.md, 00_sources/victor_li_book/chapter2_key_evidence.md, 00_sources/victor_li_book/chapter4_key_evidence.md.
• micromechanics_based_design.md — 00_sources/victor_li_book/chapter_seed_summaries.md (Chapter 1), 00_sources/victor_li_book/chapter2_key_evidence.md, 00_sources/victor_li_book/chapter2_equations_normalized.md.

Supporting foundational papers used per node

• strain_hardening_criteria.md — Li & Leung 1992; Kanda & Li 2006; Yang et al. 2008.
• fiber_bridging_law.md — Li & Leung 1992; Lin & Li 1997; Yang et al. 2008; Redon et al. 2001.
• flaw_design.md — Wang & Li 2004; Tosun-Felekoglu et al. 2013/2014; Lu et al. 2018.
• fiber_dispersion.md — Li & Wang 2006; Zhou et al. 2012; Li & Li 2012/2013; Tosun-Felekoglu et al. 2013/2014.
• processing_rheology.md — Li & Li 2012/2013; Zhou et al. 2012; Li & Wang 2006; Tosun-Felekoglu et al. 2013/2014.
• interface_properties.md — Redon et al. 2001; Li et al. 2002; Lin & Li 1997; Yang et al. 2008.
• direct_tensile_test.md — Li, Wang & Wu 2001; Yang et al. 2008; Kanda & Li 2006; Li & Li 2012.
• crack_width_distribution.md — Li, Wang & Wu 2001; Yang et al. 2008; Kanda & Li 2006; Li & Li 2012.
• distributed_microcracking.md — Li & Leung 1992; Li & Wang 2006; Kanda & Li 2006; Lu et al. 2018.
• micromechanics_based_design.md — Li & Leung 1992; Li & Wang 2006; Kanda & Li 2006; Lu et al. 2018.

Prior paper-first framing replacement

None of the ten target files contained a ## Foundational evidence heading prior to this pass; therefore no existing paper-first evidence section was overwritten. Instead, a new ## Anchor evidence section was appended to each file with the book-first two-subsection hierarchy. Existing ## Linked nodes sections and any prior body content (including previously curated Chapter 2 / Chapter 4 evidence and foundational-paper links) were preserved untouched. The new ## Anchor evidence section supersedes older prose for citation purposes going forward.

Protected directories

The following were NOT modified in this pass:

• 00_sources/foundational_papers/ (raw PDFs, source notes)
• 00_sources/victor_li_book/originals/, 00_sources/victor_li_book/extracted_text/
• 06_lab_position/
• 03_papers/* paper cards
• 07_visualization/foundational_papers_claim_evidence_matrix.csv and other matrix CSVs

Only the ten target Atlas node files under 02_concepts/ and 05_experiments/ were edited, plus this report and the companion JSON summary in 07_visualization/.