Models for estimation of service life of concrete barriers in low-level radioactive waste disposal

Technical Report · Sat Sep 01 00:00:00 EDT 1990

DOI:https://doi.org/10.2172/6548946· OSTI ID:6548946

Walton, J C; Plansky, L E; Smith, R W ^[1]

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1. EG and G Idaho, Inc., Idaho Falls, ID (USA)

Concrete barriers will be used as intimate parts of systems for isolation of low level radioactive wastes subsequent to disposal. This work reviews mathematical models for estimating the degradation rate of concrete in typical service environments. The models considered cover sulfate attack, reinforcement corrosion, calcium hydroxide leaching, carbonation, freeze/thaw, and cracking. Additionally, fluid flow, mass transport, and geochemical properties of concrete are briefly reviewed. Example calculations included illustrate the types of predictions expected of the models. 79 refs., 24 figs., 6 tabs.

• Research Organization: US Nuclear Regulatory Commission (NRC), Washington, DC (United States). Div. of Engineering; EG and G Idaho, Inc., Idaho Falls, ID (United States)
• Sponsoring Organization: USNRC
• DOE Contract Number: AC07-76ID01570
• OSTI ID: 6548946
• Report Number(s): NUREG/CR-5542; EGG-2597; ON: TI91000576; TRN: 90-033400
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
CONCRETES
DECOMPOSITION
PHYSICAL PROPERTIES
MATHEMATICAL MODELS
LOW-LEVEL RADIOACTIVE WASTES
RADIOACTIVE WASTE DISPOSAL
CALCIUM HYDROXIDES
CORROSION
CRACKING
FLUID FLOW
FREEZING
GEOCHEMISTRY
LEACHING
MASS TRANSFER
SULFATES
THAWING
ALKALINE EARTH METAL COMPOUNDS
BUILDING MATERIALS
CALCIUM COMPOUNDS
CHEMICAL REACTIONS
CHEMISTRY
DISSOLUTION
HYDROGEN COMPOUNDS
HYDROXIDES
MANAGEMENT
MATERIALS
OXYGEN COMPOUNDS
PYROLYSIS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
SEPARATION PROCESSES
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
360604* - Materials- Corrosion
Erosion
& Degradation
360603 - Materials- Properties
052002 - Nuclear Fuels- Waste Disposal & Storage