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Alkali activated materials based on glass waste and slag for thermal and acoustic insulation

Author(s):




Medium: journal article
Language(s): Spanish
Published in: Materiales de Construccion, , n. 335, v. 69
Page(s): 194
DOI: 10.3989/mc.2019.08518
Abstract:

Porous alkali activated materials (AAM), can be obtained from waste glass powder and slag mixtures by alkali activation with NaOH solution. To obtain an adequate porous microstructure, the hardened AAM pastes were thermally treated at temperatures ranging between 900°C and 1000°C, for 60 or 30 minutes. Due to the intumescent behaviour specific for this type of materials, an important increase of the volume and porosity occurs during the thermal treatment. The partial substitution of waste glass powder with slag, determines the increase of compressive strength assessed before (up to 37 MPa) and after (around 10 MPa) thermal treatment; the increase of slag dosage also determines the increase of the activation temperature of the intumescent process (above 950°C). The high porosity and the specific microstructure (closed pores with various shapes and sizes) of these materials recommend them to be utilised as thermal and acoustical insulation materials.

Structurae cannot make the full text of this publication available at this time. The full text can be accessed through the publisher via the DOI: 10.3989/mc.2019.08518.
  • About this
    data sheet
  • Reference-ID
    10516819
  • Published on:
    10/12/2020
  • Last updated on:
    19/02/2021
 
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