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Recycling of waste glasses into partially crystallized glass foams

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Abstract

Waste soda-lime glass, alone or mixed with wastes from the manufacturing of glass fibers, was successfully converted into partially crystallized glass foams by a particularly simple and economic processing, consisting of a direct heating of glass powders at temperatures from 900 to 1050 °C. The foaming operated by the oxidation of SiC, inserted as powder additive, was found to depend on a complex combination of processing temperature, soaking time, tendency of the investigated glasses toward devitrification, and amount of MnO2, acting as oxidation promoter. Selected combinations led to foams with a good microstructural homogeneity and mechanical strength, suitable for application as aggregates in lightweight concrete.

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Authors and Affiliations

  1. Dipartimento di Ingegneria Meccanica—Settore Materiali, Università di Padova, via Marzolo 9, Padova, 35131, Italy

    Enrico Bernardo & Giovanni Scarinci

  2. SASIL SpA, via Libertà 8, Brusnengo, Biella, 13862, Italy

    Paolo Bertuzzi, Piero Ercole & Ludovico Ramon

Authors
  1. Enrico Bernardo
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  2. Giovanni Scarinci
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  3. Paolo Bertuzzi
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  4. Piero Ercole
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  5. Ludovico Ramon
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Correspondence to Enrico Bernardo.

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Bernardo, E., Scarinci, G., Bertuzzi, P. et al. Recycling of waste glasses into partially crystallized glass foams. J Porous Mater 17, 359–365 (2010). https://doi.org/10.1007/s10934-009-9286-3

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  • DOI: https://doi.org/10.1007/s10934-009-9286-3

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