{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,22]],"date-time":"2026-07-22T21:05:53Z","timestamp":1784754353048,"version":"3.55.0"},"reference-count":42,"publisher":"MDPI AG","issue":"13","license":[{"start":{"date-parts":[[2025,6,24]],"date-time":"2025-06-24T00:00:00Z","timestamp":1750723200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>The rheological behavior of cementitious paste plays a pivotal role in determining the workability, pumpability, and uniformity of fresh concrete. Classical rheological models often struggle to capture the complex flocculation and hydration effects inherent in cement-based systems, and they typically depend on parameters that are difficult to measure directly, limiting their practical utility. This study presents a novel composition-based constitutive model that introduces a virtual maximum packing fraction (\u03d5max) to account for interparticle flocculation and entrapped water effects. By establishing quantitative relationships between powder characteristics\u2014such as particle size and specific surface area\u2014and rheological parameters, the model enables physically interpretable and measurable predictions of yield stress and plastic viscosity. Our validation against 65 paste formulations with varying water-to-binder ratios, mineral admixture types and dosages, and superplasticizer contents demonstrates strong predictive accuracy (R2 &gt; 0.98 for plain pastes and &gt;0.85 for blended systems). The influence of superplasticizers is effectively captured through modifications to \u03d5max, allowing the model to remain both robust and parameter efficient. This framework supports forward prediction of paste rheology from raw material properties, offering a valuable tool for intelligent mix design in high-performance concrete applications such as self-consolidating and 3D-printed concrete.<\/jats:p>","DOI":"10.3390\/ma18132983","type":"journal-article","created":{"date-parts":[[2025,6,24]],"date-time":"2025-06-24T04:37:21Z","timestamp":1750739841000},"page":"2983","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Constitutive Modeling of Rheological Behavior of Cement Paste Based on Material Composition"],"prefix":"10.3390","volume":"18","author":[{"given":"Chunming","family":"Lian","sequence":"first","affiliation":[{"name":"Key Laboratory of Advanced Civil Engineering Materials of Education Ministry, School of Material Science and Technology, Tongji University, 4800 Cao\u2019an Road, Shanghai 201804, China"},{"name":"China Construction Eighth Bureau Science and Technology Construction Co., Ltd., 899 Gaoke West Road, Shanghai 201804, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiong","family":"Zhang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Advanced Civil Engineering Materials of Education Ministry, School of Material Science and Technology, Tongji University, 4800 Cao\u2019an Road, Shanghai 201804, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lu","family":"Han","sequence":"additional","affiliation":[{"name":"China Construction Eighth Bureau Science and Technology Construction Co., Ltd., 899 Gaoke West Road, Shanghai 201804, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wenbiao","family":"Lin","sequence":"additional","affiliation":[{"name":"China Construction Eighth Bureau Science and Technology Construction Co., Ltd., 899 Gaoke West Road, Shanghai 201804, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Weijun","family":"Wen","sequence":"additional","affiliation":[{"name":"China Construction Eighth Bureau Science and Technology Construction Co., Ltd., 899 Gaoke West Road, Shanghai 201804, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,6,24]]},"reference":[{"key":"ref_1","unstructured":"(2018). 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