Numerical modeling on the influence of particle shape on ITZ’s microstructure and macro-properties of cementitious composites: a critical review
Source abstract
Abstract
Spherical particle models are often employed in the literature to numerically quantify the relationship among composition, structure, and macro-performance of cementitious composites. However, most particles in cementitious composites are non-spherical particle. To clarify how particle shape affects the microstructure and macro-properties of materials, both Platonic and spheroidal particles packing models are developed. An ITZ layer is constructed around these non-spherical particles via Minkowski sum approach. Dependence of the ratio of apparent to actual ITZ thickness and volume fraction of ITZ on aggregate’s shape is quantitatively presented. Influence of sphericity and volume fraction of particles on the degree of hydration and total porosity of cement paste, effective elastic modulus, water permeability and diffusivity of concrete is presented. All the investigations reveal that particle shape significantly affects microstructure and properties of cementitious composites. Neglecting the influence of particle shape may cause serious deviation away from the reality.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Concrete and Cement Materials Research · Innovative concrete reinforcement materials · Innovations in Concrete and Construction Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Jiangsu Key Laboratory of Construction Materials, School of Materials Science & Engineering, Southeast University, Nanjing 211189, China
Institute of Soft Matter Mechanics, College of Mechanics and Materials, Hohai University, Nanjing 211100, China
Jiangsu Engineering Research Center of Concrete Cracking, College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China
Funding
Ministry of Science and Technology of China ‘973 Project’ · National Nature Science Foundation Project of China
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