Published November 20, 1985 | Version v1
Report Restricted

Immobilization of radioactive waste in cement-based matrices

Creators

  • 1. Dept. of Chemistry
  • 2. Aberdeen Univ. (UK)

Description

A solubility model of the system CaO-SiO2-H2O is developed which takes account of the state of Si polymerization in the solid. Free energies of formations of its bonding hydrogel are tabulated. The internal redox conditions in cements have been measured; in particular, slags lower the Esub(eta) relative to OPC. The fate of Sr and U in cement systems has been determined; Sr is incorporated in the aluminate phases, while U6+ is precipitated as Ca-U-O-H2O phases. Lowering the internal Esub(eta) reduces U solubility. Studies of the carbonation of slag-cement blends are reported. (author)

Availability note (English)

MF available from INIS under the Report Number.

Files

Restricted

The record is publicly accessible, but files are restricted to users with access.

Additional details

Publishing Information

Imprint Pagination
78 p.
Report number
DOE-RW--85.189

INIS

Country of Publication
United Kingdom
Country of Input or Organization
United Kingdom
INIS RN
18002856
Subject category
S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
CALCIUM OXIDES; CEMENTS; EVALUATED DATA; EXPERIMENTAL DATA; FREE ENERGY; IMMOBILIZATION; MATRIX MATERIALS; POLYMERIZATION; RADIOACTIVE WASTE PROCESSING; RADIOACTIVE WASTES; REDOX POTENTIAL; RESEARCH PROGRAMS; SILICON; SILICON OXIDES; SLAGS; SOLUBILITY; STRONTIUM; UNITED KINGDOM; URANIUM; WASTE MANAGEMENT; WATER
Descriptors DEC
ACTINIDES; ALKALINE EARTH METAL COMPOUNDS; ALKALINE EARTH METALS; BUILDING MATERIALS; CALCIUM COMPOUNDS; CHALCOGENIDES; CHEMICAL REACTIONS; DATA; DEVELOPED COUNTRIES; ELEMENTS; ENERGY; EUROPE; HYDROGEN COMPOUNDS; INFORMATION; MANAGEMENT; MATERIALS; METALS; NUMERICAL DATA; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; POLAR SOLVENTS; RADIOACTIVE MATERIALS; SEMIMETALS; SILICON COMPOUNDS; SOLVENTS; THERMODYNAMIC PROPERTIES; WASTE PROCESSING; WASTES