Scholarlink

The recent evolution and diffusion of 3D printing technology is associated to the contemporary diffusion of software for the parametric control of printers; parametric design gave also birth to what has been called “parametric architecture”. As parametric design, also digital manufacturing technologies scaled from art and craft to architecture; concrete 3D printing has been widely studied even if more rarely applied. The larger is the scale the more it is necessary to control the buildability through the simulation of green properties of concrete in the first minutes after the extrusion. Computer graphic associated to finite element elasto-plastic analysis implemented in commercial software for 3D printing permits even to non-specialists to simulate the printing phase modifying fictitiously the green properties through a time parameter. Recently, 3D technology was applied to raw earth construction, to connect the most ancient building material with the most modern building technology. As the hardening of plastic soil is not related to a chemical reaction (hydration) that in few hours transforms the material in a different one, the study of additives that modify the properties of the 3D earth ink facilitating extrudability with lower water amount is crucial. Alginates have been used for industrial applications and for bio printed tissues. The good response of alginates as viscosity modifiers was tested when associated to raw earth mixtures. In this paper ongoing research is presented in which the fresh properties of earth ink are modified with a biopolymer obtained as a secondary product of water depuration. It has been observed that such substance has properties similar to alginates. At first, the fresh properties of different earth ink mixtures were determined based on the consolidated procedures used in geotechnic and compared with the one modified by the addictive. Then indirect measures were made to control the evolution in short times of the main properties of the mixtures (with and without additive) and such properties were implemented in a numerical analysis aiming at reproducing the printing process.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Managing Printability of Raw Earth

  • 会议论文

  • 发表日期：

    2026年

查看全文
  • M. Fagone,
  • F. Loccarini,
  • T. Lotti,
  • B. Pagliaccia,
  • G. Ranocchiai

摘要

The recent evolution and diffusion of 3D printing technology is associated to the contemporary diffusion of software for the parametric control of printers; parametric design gave also birth to what has been called “parametric architecture”. As parametric design, also digital manufacturing technologies scaled from art and craft to architecture; concrete 3D printing has been widely studied even if more rarely applied. The larger is the scale the more it is necessary to control the buildability through the simulation of green properties of concrete in the first minutes after the extrusion. Computer graphic associated to finite element elasto-plastic analysis implemented in commercial software for 3D printing permits even to non-specialists to simulate the printing phase modifying fictitiously the green properties through a time parameter. Recently, 3D technology was applied to raw earth construction, to connect the most ancient building material with the most modern building technology. As the hardening of plastic soil is not related to a chemical reaction (hydration) that in few hours transforms the material in a different one, the study of additives that modify the properties of the 3D earth ink facilitating extrudability with lower water amount is crucial. Alginates have been used for industrial applications and for bio printed tissues. The good response of alginates as viscosity modifiers was tested when associated to raw earth mixtures. In this paper ongoing research is presented in which the fresh properties of earth ink are modified with a biopolymer obtained as a secondary product of water depuration. It has been observed that such substance has properties similar to alginates. At first, the fresh properties of different earth ink mixtures were determined based on the consolidated procedures used in geotechnic and compared with the one modified by the addictive. Then indirect measures were made to control the evolution in short times of the main properties of the mixtures (with and without additive) and such properties were implemented in a numerical analysis aiming at reproducing the printing process.