{
  "abstract": "High-strength polyethylene-fibre engineered cementitious composites (PE-ECCs) provide tensile strain hardening and distributed cracking, but their high paste content and low water-to-binder ratio produce substantial shrinkage. This study conducted a multi-criteria screening of an MgO expansive agent and a shrinkage-reducing admixture (SRA) in a PE-ECC repair mortar for hydraulic-concrete applications. The reference matrix contained 65% P·II 52.5 cement, 10% silica fume, 25% blast-furnace slag, a water-to-binder ratio of 0.27, and 2.5 vol.% PE fibre. Drying shrinkage, compressive and flexural strengths, tensile response, crack number, and strain-based crack-opening estimate were assessed. The reference mortar reached 90.1 MPa compressive strength and 6.6% tensile strain but developed 1489 με of 28 d shrinkage. 2% MgO reduced the 28 d shrinkage to 1384 με, whereas higher dosages shifted from contraction to net expansion and reduced tensile performance. The liquid SRA reduced 28 d shrinkage to 982, 930, and 874 με at 1%, 2%, and 3%, respectively. The 1% mixture retained 82.3 MPa compressive strength, 5.7 MPa tensile strength, 4.4% tensile strain, and a crack-opening estimate of 66.4 μm. Under the adopted criteria, 1% SRA provided the most balanced combination of dimensional stability, strength, and tensile ductility, making it a candidate for application-specific evaluation in hydraulic-concrete repair.",
  "abstract_shown": true,
  "affiliations": [
    "Changjiang River Scientific Research Institute, Wuhan 430010, China",
    "Wuhan Municipal Engineering Design & Research Institute Co., Ltd., Wuhan 430023, China"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 6,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Qi Lu"
    },
    {
      "affs": [
        0
      ],
      "name": "Xian Zhou",
      "orcid": "0000-0001-8780-6960"
    },
    {
      "affs": [
        1
      ],
      "name": "Xian Wu"
    },
    {
      "affs": [
        0
      ],
      "name": "Zeyu Fan",
      "orcid": "0000-0002-5814-1442"
    },
    {
      "affs": [
        0
      ],
      "name": "Peihang Li"
    },
    {
      "affs": [
        0
      ],
      "name": "Wei Han"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/ccme9tq0sd12m.bib",
  "cited_by": 0,
  "doi": "10.3390/polym18212798",
  "fulltext_url": null,
  "id": "ccme9tq0sd12m",
  "issns": [
    "2073-4360"
  ],
  "landing_url": "https://www.mdpi.com/2073-4360/18/21/2798",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [],
  "openalex": null,
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-09",
  "publisher": "MDPI AG",
  "ris": "https://research.draconitic.com/paper/ccme9tq0sd12m.ris",
  "sources": [
    {
      "first_seen": "2026-11-10T00:21:22Z",
      "native_id": "10.3390/polym18212798",
      "source": "crossref",
      "url": "https://www.mdpi.com/2073-4360/18/21/2798"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "issn:2073-4360",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Material-Level Shrinkage and Tensile-Performance Screening of High-Strength Polyethylene-Fibre Engineered Cementitious Composite (PE-ECC) Mortar: MgO Versus Liquid Shrinkage-Reducing Admixture",
  "title_text": "Material-Level Shrinkage and Tensile-Performance Screening of High-Strength Polyethylene-Fibre Engineered Cementitious Composite (PE-ECC) Mortar: MgO Versus Liquid Shrinkage-Reducing Admixture",
  "type": "peer-reviewed",
  "updated_at": "2026-11-10T00:21:22Z",
  "url": "https://research.draconitic.com/paper/ccme9tq0sd12m",
  "venue": "Polymers",
  "versions": []
}