Structural build-up model for three-dimensional concrete printing based on kinetics theory

作     者：Prabhat Ranjan PREM P.S.AMBILY Shankar KUMAR Greeshma GIRIDHAR Dengwu JIAO Prabhat Ranjan PREM;P.S.AMBILY;Shankar KUMAR;Greeshma GIRIDHAR;Dengwu JIAO

作者机构：Advanced Materials LaboratoryCSIR-Structural Engineering Research CentreChennai 600113India Department of Architecture and Civil EngineeringCity University of Hong KongHong Kong 999077China 

出 版 物：《Frontiers of Structural and Civil Engineering》 (结构与土木工程前沿（英文版）)

年 卷 期：2024年第18卷第7期

页      面：998-1014页

核心收录：

学科分类：08[工学] 081304[工学-建筑技术科学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0813[工学-建筑学] 

基　　金：A grant from CSIR,New Delhi,generously funds this study partially supported by the City University of Hong Kong,China(No.9610661) 

主　　题：structural build-up rheology thixotropy 3D printable concrete kinetics theory ultra high performance concrete 

摘      要：The thixotropic structural build-up is crucial in extrusion-based three-dimensional(3D)concrete *** paper uses a theoretical model to predict the evolution of static and dynamic yield stress for printed *** model employs a structural kinetics framework to create a time-independent constitutive link between shear stress and shear *** model considers flocculation,deflocculation,and chemical hydration to anticipate structural *** reversible and irreversible contributions that occur throughout the build-up,breakdown,and hydration are defined based on the proposed structural ***,detailed parametric studies are conducted to evaluate the impact of model *** is revealed that the proposed model is in good agreement with the experimental results,and it effectively characterizes the structural build-up of 3D printable concrete.