Evaluation of Chitosan and Potato Starch as Stabilizers to Improve the Mechanical and Water Durability Properties of Printable Earth-Based Matrices Reinforced with Sisal Fibers

Diana Zavaleta, Robert Nanez, Guido Silva, Suyeon Kim, Gaby Ruiz, Miguel A. Pando, Javier Nakamatsu, Rafael Aguilar

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

1 Scopus citations

Abstract

Due to economic, sustainable, and aesthetic benefits, academia and the construction industry are exploring the use of earth in modern construction is being widely studied. Unfortunately, earth as a construction material has low mechanical, poor water durability resistance, and the potential to swell and crack. Therefore, this paper evaluates chitosan and potato starch, natural biodegradable polymers, as stabilizers to improve mechanical strength and water durability resistance of printable earth-based matrix reinforced with sisal fibers. Although the test results indicated that the chitosan had a better performance as an earth stabilizer than potato starch, adding both stabilizers resulted in earthen composites with higher compressive strength and lower water permeability. These results demonstrate the feasibility of using natural stabilizers to improve the performance of earth-based materials for 3D printing without affecting their printability capacities.

Original languageEnglish
Title of host publicationMaterials Science Forum
PublisherTrans Tech Publications Ltd
Pages151-159
Number of pages9
DOIs
StatePublished - 2023

Publication series

NameMaterials Science Forum
Volume1093
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Keywords

  • 3D printing
  • Additive manufacturing
  • Chitosan
  • Earth construction
  • Mechanical strength
  • Potato starch
  • Water durability

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