A Study on Supercritical Water Technology for Recycling of Building Materials

Abstract:

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Supercritical water (SCW) has both the solvent power approximate to liquids and the transport properties common to gases. It is therefore expected as an excellent solvent for industrial waste treatment. In this study, various building materials were treated with SCW, and their morphological changes after treatment were observed. The effects of SCW treatment on the pore structure and compressive strength of cement concrete and mortar were also investigated. In the range of this study, after SCW treatment, inorganic materials and organic materials can be recovered as solids and liquids, respectively. Under sub-critical and super-critical temperature and pressure conditions, compressive strength of mortar decreases, while the effective pore volume increases.

Info:

Periodical:

Key Engineering Materials (Volumes 302-303)

Edited by:

Nai-Qian Feng and Gai-Fei Peng

Pages:

391-397

DOI:

10.4028/www.scientific.net/KEM.302-303.391

Citation:

K. Yamamoto et al., "A Study on Supercritical Water Technology for Recycling of Building Materials", Key Engineering Materials, Vols. 302-303, pp. 391-397, 2006

Online since:

January 2006

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Price:

$35.00

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