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@ARTICLE{Keane:1025443,
      author       = {Keane, Patrick F. and Jacob, Rhys and Belusko, Martin and
                      Bruno, Frank},
      title        = {{S}elf-{H}ealing {G}lass/{M}etakaolin-{B}ased {G}eopolymer
                      {C}omposite {E}xposed to {M}olten {S}odium {C}hloride and
                      {P}otassium {C}hloride},
      journal      = {Applied Sciences},
      volume       = {13},
      number       = {4},
      issn         = {2076-3417},
      address      = {Basel},
      publisher    = {MDPI},
      reportid     = {FZJ-2024-02895},
      pages        = {2615 -},
      year         = {2023},
      abstract     = {Geopolymers (GP) are a class of X-ray amorphous,
                      nanoporous, nanoparticulate materialsthat can be mixed,
                      poured, and cured under ambient conditions. Typically,
                      geopolymers are madeusing a Group 1 (G1) alkali activator
                      such as sodium or potassium metasilicate and an
                      aluminosilicateprecursor. An analogous material to GPs is
                      ordinary Portland cement because of the similarities
                      inprocessing, however, the resulting microstructure is more
                      similar to that of a glass. Geopolymers aremore thermally
                      stable than OPC and can therefore be used in a variety of
                      thermal energy storagesystems, as energy storage is an
                      increasing global concern. In this study, potassium
                      metakaolin-basedgeopolymer composites containing glass
                      particles and alumina platelets were manufactured, heatedin
                      air, and exposed to molten sodium chloride or potassium
                      chloride under an air atmosphere.Results showed the
                      formation of an amorphous self-healing geopolymer composite
                      (ASH-G) thatcould contain molten G1 chlorides for over 200 h
                      without signs of macro or microscopic chemicaldegradation.
                      The filling of cracks by glass particles in the composite
                      after heating to 850 ◦C makes thismaterial self-healing.
                      It was found that the morphology of ASH-G composites was
                      more affected bytemperature and duration than contact with
                      corrosive molten chlorides in air. Future works
                      includeinvestigating the effect of molten salt on mechanical
                      properties during initial heating, after prolongedheating,
                      and the material compatibility with other molten Group 1
                      chloride eutectics.},
      cin          = {IEK-2},
      ddc          = {600},
      cid          = {I:(DE-Juel1)IEK-2-20101013},
      pnm          = {1243 - Thermal Energy Storage (POF4-124)},
      pid          = {G:(DE-HGF)POF4-1243},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000938748900001},
      doi          = {10.3390/app13042615},
      url          = {https://juser.fz-juelich.de/record/1025443},
}