当前位置: X-MOL 学术3D Print. Addit. Manuf. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Eggshell: Ultra-Thin Three-Dimensional Printed Formwork for Concrete Structures
3D Printing and Additive Manufacturing ( IF 2.3 ) Pub Date : 2020-04-16 , DOI: 10.1089/3dp.2019.0197
Joris Burger 1 , Ena Lloret-Fritschi 1, 2 , Fabio Scotto 1, 2 , Thibault Demoulin 2 , Lukas Gebhard 3 , Jaime Mata-Falcón 3 , Fabio Gramazio 1 , Matthias Kohler 1 , Robert J. Flatt 2
Affiliation  

Concrete is a material favored by architects and builders alike due to its high structural strength and its ability to take almost any form. However, to shape concrete structures, heavy-duty formwork is usually necessary to support the fresh concrete while curing. To expand geometrical freedom, three-dimensional (3D) printed concrete formwork has emerged as a field of research. This article presents one possible application, a novel fabrication process that combines large-scale robotic fused deposition modeling 3D printing with simultaneous casting of a fast-hardening, set-on-demand concrete. This fabrication process, known as “Eggshell,” enables the production of nonstandard concrete structures in a material-efficient process. By casting a fast-hardening concrete in a continuous process, lateral pressure exerted by the fresh concrete is kept to a minimum. In this way, a 1.5-mm-thin thermoplastic shell can be used as a formwork, without any additional support. Geometries of different scales are tested in this article to evaluate the feasibility of the Eggshell fabrication process in an architectural context. An array of printing materials are also tested, and several different reinforcement concepts are analyzed. The findings are used to produce a full-scale architectural demonstrator project. This article shows that a wide range of concrete geometries can be produced in a material-efficient fabrication process, paving the way toward mass customization and structural optimization within concrete architecture.

中文翻译:

蛋壳:用于混凝土结构的超薄三维印刷模板

混凝土具有很高的结构强度和几乎可以采用任何形式的能力,因此受到建筑师和建筑商的青睐。但是,要成型混凝土结构,通常需要重型模板以在固化时支撑新混凝土。为了扩大几何自由度,三维(3D)打印的混凝土模板已经成为研究领域。本文介绍了一种可能的应用,即一种新颖的制造工艺,该工艺将大规模的机器人熔融沉积建模3D打印与快速硬化的按需浇铸混凝土同时浇铸相结合。这种被称为“ Eggshell”的制造过程可以通过节省材料的过程来生产非标准的混凝土结构。通过连续浇铸快速硬化的混凝土,新鲜混凝土施加的侧向压力保持在最低水平。这样,无需任何其他支撑即可使用1.5毫米薄的热塑性外壳作为模板。本文测试了不同比例的几何形状,以评估在建筑环境中蛋壳制造工艺的可行性。还测试了一系列印刷材料,并分析了几种不同的加固概念。研究结果用于产生一个完整的建筑演示项目。本文表明,可以通过节省材料的制造过程来生产各种几何尺寸的混凝土,从而为混凝土结构中的大规模定制和结构优化铺平了道路。本文测试了不同比例的几何形状,以评估在建筑环境中蛋壳制造工艺的可行性。还测试了一系列印刷材料,并分析了几种不同的加固概念。研究结果用于产生一个完整的建筑演示项目。本文表明,可以通过节省材料的制造过程来生产各种几何尺寸的混凝土,从而为混凝土结构中的大规模定制和结构优化铺平了道路。本文测试了不同比例的几何形状,以评估在建筑环境中蛋壳制造工艺的可行性。还测试了一系列印刷材料,并分析了几种不同的加固概念。研究结果用于产生一个完整的建筑演示项目。本文表明,可以通过节省材料的制造过程来生产各种几何尺寸的混凝土,从而为混凝土结构中的大规模定制和结构优化铺平了道路。研究结果用于产生一个完整的建筑演示项目。本文表明,可以通过节省材料的制造过程来生产各种几何尺寸的混凝土,从而为混凝土结构中的大规模定制和结构优化铺平了道路。研究结果用于产生一个完整的建筑演示项目。本文表明,可以通过节省材料的制造过程来生产各种几何尺寸的混凝土,从而为混凝土结构中的大规模定制和结构优化铺平了道路。
更新日期:2020-04-16
down
wechat
bug