干旱区生态环境知识资源中心(Arid): Long-term modeling of glass waste in portland cement- and clay-based matrices

Arid

DOI	10.2172/168366
报告编号	SAND--95-2730
来源ID	OSTI_ID: 168366
	Long-term modeling of glass waste in portland cement- and clay-based matrices
	Stockman, H.W.; Nagy, K.L. [Sandia National Labs., Albuquerque, NM (United States)]; Morris, C.E. [Wollongong Univ., NSW (Australia). Dept. of Civil and Mining Engineering]
英文摘要	A set of ``templates`` was developed for modeling waste glass interactions with cement-based and clay-based matrices. The templates consist of a modified thermodynamic database, and input files for the EQ3/6 reaction path code, containing embedded rate models and compositions for waste glass, cement, and several pozzolanic materials. Significant modifications were made in the thermodynamic data for Th, Pb, Ra, Ba, cement phases, and aqueous silica species. It was found that the cement-containing matrices could increase glass corrosion rates by several orders of magnitude (over matrixless or clay matrix systems), but they also offered the lowest overall solubility for Pb, Ra, Th and U. Addition of pozzolans to cement decreased calculated glass corrosion rates by up to a factor of 30. It is shown that with current modeling capabilities, the ``affinity effect`` cannot be trusted to passivate glass if nuclei are available for precipitation of secondary phases that reduce silica activity.
出版年	1995
报告类型	Technical Report
语种	英语
国家	美国
来源学科分类	05 NUCLEAR FUELS ; GLASS ; DECOMPOSITION ; E CODES ; CEMENTS ; CLAYS ; THORIUM ; LEAD ; RADIUM ; BARIUM ; WASTE FORMS
URL	http://www.osti.gov/scitech/servlets/purl/168366
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/266426
推荐引用方式 GB/T 7714	Stockman, H.W.,Nagy, K.L. [Sandia National Labs., Albuquerque, NM ,Morris, C.E. [Wollongong Univ., NSW . Long-term modeling of glass waste in portland cement- and clay-based matrices,1995.