4D Printing Structures for Extreme Temperatures Using Metakaolin Based Geopolymers

Abstract

Geopolymers (GPs) are a class of amorphous, aluminosilicate-based ceramics that cure at room temperature. GPs are formed by mixing an aluminosilicate source, which is metakaolin in this case, with an alkali activator solution, which can be either sodium or potassium water glass. GPs have attracted interest for use in structural applications over the past few decades because they have superior mechanical properties to ordinary Portland cement (OPC). Additionally, they can tolerate much higher temperatures and produce a fraction of the CO compared to OPC. This project aims to develop geopolymer composites for 4D printing (the fourth dimension being time) and test their mechanical properties. Rheology and the effects of curing in ambient conditions will be evaluated for fresh geopolymer. Freeze-thaw resistance will be evaluated on potentially printable composites for extreme temperature resistance, etc.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 2023
Accession Number
AD1198199

Entities

People

  • Allison Brandvold
  • Andrij Kozych
  • Ghassan K. Al-chaar
  • William Mendoza

Organizations

  • Engineer Research and Development Center

Tags

Communities of Interest

  • Cyber
  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Additive Manufacturing
  • Chemical Elements
  • Chemical Engineering
  • Chemical Synthesis
  • Chemistry
  • Climate Change
  • Construction
  • Engineers
  • Manufacturing
  • Material Degradation Processes
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Mechanical Properties
  • Mechanics

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Pavement Materials Engineering.
  • Reinforced Composite Materials

Technology Areas

  • Space