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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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{
  "inLanguage": {
    "alternateName": "eng", 
    "@type": "Language", 
    "name": "English"
  }, 
  "description": "<p>The feasibility to prepare alkali-activated materials starting from refractory wastes and their properties after exposure to high temperatures (800, 1000, 1200 and 1400\u202f&deg;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\u202fMPa 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\u202f&deg;C thanks to the matrix densification. Above 1000\u202f&deg;C viscous sintering occurs leading to a further increase of mechanical properties. AZS-based materials were able to withstand high temperatures up to 1400\u202f&deg;C while CH-based pastes mechanical properties decrease at 1400\u202f&deg;C due to andalusite decomposition.</p>", 
  "license": "https://creativecommons.org/licenses/by/4.0/legalcode", 
  "creator": [
    {
      "affiliation": "POLITO", 
      "@type": "Person", 
      "name": "BARTOLOMEO COPPOLA"
    }, 
    {
      "affiliation": "SAINT-GOBAIN", 
      "@type": "Person", 
      "name": "TARDIVAT CAROLINE"
    }, 
    {
      "affiliation": "SAINT-GOBAIN", 
      "@type": "Person", 
      "name": "RICHAUD STEPHANE"
    }, 
    {
      "affiliation": "POLITO", 
      "@type": "Person", 
      "name": "TULLIANI JEAN-MARC"
    }, 
    {
      "affiliation": "POLITO", 
      "@type": "Person", 
      "name": "MONTANARO LAURA"
    }, 
    {
      "affiliation": "POLITO", 
      "@type": "Person", 
      "name": "PALMERO PAOLA"
    }
  ], 
  "headline": "Alkali-activated refractory wastes exposed to high temperatures: development and characterization", 
  "image": "https://zenodo.org/static/img/logos/zenodo-gradient-round.svg", 
  "datePublished": "2020-06-24", 
  "url": "https://zenodo.org/record/3906070", 
  "keywords": [
    "Chamotte", 
    "AZS", 
    "Alkali-Activation", 
    "Refractory", 
    "High-Temperature"
  ], 
  "@context": "https://schema.org/", 
  "identifier": "https://doi.org/10.1016/j.jeurceramsoc.2020.02.052", 
  "@id": "https://doi.org/10.1016/j.jeurceramsoc.2020.02.052", 
  "@type": "ScholarlyArticle", 
  "name": "Alkali-activated refractory wastes exposed to high temperatures: development and characterization"
}
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