Modeling Fluid Absorption in Anisotropic 3D-Printed Cement-Based Materials
Автор: American Concrete Institute
Загружено: 2025-06-12
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Presented By: Luiz Antonio de Siqueira Neto, Oregon State University
Description: This presentation will introduce a finite element modeling approach based on first principles to simulate water absorption in layered cement-based materials. The model is first validated by accurately predicting the moisture uptake of mortar samples during a ponding experiment. The same experiment is simulated with layered geometries replicating those of 3D-printed structures, emphasizing substantial heterogeneity between filament and interfacial regions. Results reveal the highly anisotropic nature of moisture transport in these systems, showing how specific layer arrangements can facilitate or inhibit absorption. Additionally, the study analyzes the role of porosity, pore connectivity, and pore size distribution on the directionality of moisture transport through the layered structures, providing insights into how the materials in and the geometries of these systems can be designed to control water absorption.
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