Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.2172/10178711 |
| 报告编号 | ANL--94/17 |
| 来源ID | OSTI_ID: 10178711 |
| Critical review of glass performance modeling | |
| Bourcier, W.L. [Lawrence Livermore National Lab., CA (United States)] | |
| 英文摘要 | Borosilicate glass is to be used for permanent disposal of high-level nuclear waste in a geologic repository. Mechanistic chemical models are used to predict the rate at which radionuclides will be released from the glass under repository conditions. The most successful and useful of these models link reaction path geochemical modeling programs with a glass dissolution rate law that is consistent with transition state theory. These models have been used to simulate several types of short-term laboratory tests of glass dissolution and to predict the long-term performance of the glass in a repository. Although mechanistically based, the current models are limited by a lack of unambiguous experimental support for some of their assumptions. The most severe problem of this type is the lack of an existing validated mechanism that controls long-term glass dissolution rates. Current models can be improved by performing carefully designed experiments and using the experimental results to validate the rate-controlling mechanisms implicit in the models. These models should be supported with long-term experiments to be used for model validation. The mechanistic basis of the models should be explored by using modern molecular simulations such as molecular orbital and molecular dynamics to investigate both the glass structure and its dissolution process. |
| 出版年 | 1994 |
| 报告类型 | Technical Report |
| 语种 | 英语 |
| 国家 | 美国 |
| 来源学科分类 | 12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES ; BOROSILICATE GLASS ; DISSOLUTION ; VITRIFICATION ; RADIOACTIVE WASTE PROCESSING ; MATHEMATICAL MODELS 052002 ; WASTE DISPOSAL AND STORAGE |
| URL | http://www.osti.gov/scitech/servlets/purl/10178711 |
| 资源类型 | 科技报告 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/265712 |
| 推荐引用方式 GB/T 7714 | Bourcier, W.L. [Lawrence Livermore National Lab., CA . Critical review of glass performance modeling,1994. |
| 条目包含的文件 | 条目无相关文件。 | |||||
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
