Effects of Early-Age rheology and printing time interval on Late-Age fracture characteristics of 3D printed concrete
Construction and Building Materials（2022）
摘要
•Fracture of 3D printed concrete is strongly affected by rheology and printing process.•Increasing printing time interval changes rheology and decreases fracture toughness.•Time effect is stronger on fracture characteristics of interlayers than filaments.•Dynamic oscillation sweep method reveals time-dependent storage modulus and viscosity.•Novel fracture experiment using DIC measures and visualizes process zone growth.
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关键词
Concrete,Additive manufacturing,3D printing,Rheology,Storage modulus,Complex viscosity,Interlayer,Fracture process zone,Fracture toughness,Printing time
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