Influence of Cold Joint on Fracture Behaviour of 3D Printed Concrete

被引：1

作者：

Thakur, Manideep Singh ^{[1
]}

Kulkarni, Omkar ^{[1
]}

Kamakshi, Tippabhotla A. ^{[2
]}

Paritala, Spandana ^{[2
]}

Subramaniam, Kolluru V. L. ^{[2
]}

机构：

[1] IIT Hyderabad, Civil Engn Dept, Struct Engn, Hyderabad, India

[2] IIT Hyderabad, Civil Engn Dept, Hyderabad, India

来源：

SMART & SUSTAINABLE INFRASTRUCTURE: BUILDING A GREENER TOMORROW, ISSSI 2023 | 2024年 / 48卷

关键词：

Fracture behaviour; Cold joints; Bond strength; 3D Concrete Printing; BOND STRENGTH;

D O I：

10.1007/978-3-031-53389-1_19

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Extrusion-based layer deposition is the most popular form of 3D Concrete Printing (3DCP). The inter-layer bonding is an important parameter in the case of extrusion-based layer deposition in 3DCP, which affects the homogeneity of the element and thus its mechanical behaviour. The bond between the layers depends upon several factors including the fluidity of themixture and the print time gap between layers. Weak interfaces develop in the form of cold joints between two adjacent layers of concrete when they are placed with a time gap. The study involves the understanding of influence of time gap between the vertical layers on the fracture behaviour of the printed beams. Crack propagation in the layered beam is evaluated using digital image correlation. The influence of wait time on the crack planes across the printed interfaces are studied. The reduction in the bond between layers with waiting time is related to fracture behaviour of the printed beam.

引用

页码：194 / 202

页数：9

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