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Alkali-activated refractory wastes exposed to high temperatures: development and characterization

BARTOLOMEO COPPOLA; TARDIVAT CAROLINE; RICHAUD STEPHANE; TULLIANI JEAN-MARC; MONTANARO LAURA; PALMERO PAOLA


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<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:creator>BARTOLOMEO COPPOLA</dc:creator>
  <dc:creator>TARDIVAT CAROLINE</dc:creator>
  <dc:creator>RICHAUD STEPHANE</dc:creator>
  <dc:creator>TULLIANI JEAN-MARC</dc:creator>
  <dc:creator>MONTANARO LAURA</dc:creator>
  <dc:creator>PALMERO PAOLA</dc:creator>
  <dc:date>2020-06-24</dc:date>
  <dc:description>The feasibility to prepare alkali-activated materials starting from refractory wastes and their properties after exposure to high temperatures (800, 1000, 1200 and 1400 °C) were investigated. Two different aluminosilicate wastes were used: chamotte (CH, mainly composed of corundum, mullite and andalusite) and alumina-zirconia-silica (AZS, composed by baddeleyite, corundum and amorphous silica). Very high mechanical properties were achieved in both cases (28-days compressive strength of approx. 70 and 60 MPa for CH- and AZS-based pastes, respectively). Then, alkali-activated pastes were exposed to high temperatures. For both kinds of samples, a sharp increase of mechanical properties was obtained after exposure to 800 and 1000 °C thanks to the matrix densification. Above 1000 °C viscous sintering occurs leading to a further increase of mechanical properties. AZS-based materials were able to withstand high temperatures up to 1400 °C while CH-based pastes mechanical properties decrease at 1400 °C due to andalusite decomposition.</dc:description>
  <dc:identifier>https://zenodo.org/record/3906070</dc:identifier>
  <dc:identifier>10.1016/j.jeurceramsoc.2020.02.052</dc:identifier>
  <dc:identifier>oai:zenodo.org:3906070</dc:identifier>
  <dc:language>eng</dc:language>
  <dc:relation>info:eu-repo/grantAgreement/EC/H2020/734342/</dc:relation>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>https://creativecommons.org/licenses/by/4.0/legalcode</dc:rights>
  <dc:subject>Chamotte</dc:subject>
  <dc:subject>AZS</dc:subject>
  <dc:subject>Alkali-Activation</dc:subject>
  <dc:subject>Refractory</dc:subject>
  <dc:subject>High-Temperature</dc:subject>
  <dc:title>Alkali-activated refractory wastes exposed to high temperatures: development and characterization</dc:title>
  <dc:type>info:eu-repo/semantics/article</dc:type>
  <dc:type>publication-article</dc:type>
</oai_dc:dc>
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