Cementitious binders in the system Mg(OH)2–NaAlO2–SiO2–H2O

Autor:	John L. Provis, Hajime Kinoshita, N.C. Collier, Sam A. Walling, Susan A. Bernal
Rok vydání:	2014
Předmět:	chemistry.chemical_compound Materials science chemistry Hydrotalcite Ceramics and Composites Hydroxide Cementitious Composite material Zeolite Industrial and Manufacturing Engineering Curing (chemistry) Nuclear chemistry
Zdroj:	Advances in Applied Ceramics. 113:496-501
ISSN:	1743-6761 1743-6753
Popis:	In this study, binders within the system Mg(OH)2–NaAlO2–SiO2–H2O were produced and characterised for the potential immobilisation of radioactive Mg(OH)2 sludges derived from the UK Magnox nuclear programme. The formation of zeolites promoted hardening within 24 h, with the structures and compositions of the zeolites dependent on the contents of SiO2 in the systems. Limited consumption of Mg(OH)2 was identified in the binders cured for up to 90 days, except for a hydrotalcite type layered double hydroxide in binders formulated with low SiO2 contents. This study has elucidated that binders within this system can effectively encapsulate high contents of Mg(OH)2; however, the reaction of Mg(OH)2 to form binding phases is limited by the content of SiO2 in the system, and occurs primarily at advanced times of curing.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::436da6a9172429afb383045d145d5206 https://doi.org/10.1179/1743676114y.0000000198 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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