Published 1995 | Version v1
Miscellaneous Metadata-only

Radioactive waste cementation using silica-fume as admixture

Creators

Description

Some liquid and wet-solid radioactive wastes must be immobilized in order to obtain a monolithic block. Cement has been used around the world as the main matrix to immobilize low-and intermediate-level wastes. Cemented waste forms must comply with some requirements in order to guarantee the safe handling in the subsequent waste management steps. Silica-fume can improve the properties of the cemented waste forms. It was used as admixture in the cementation of ion-exchange resins and liquid waste from fission Mo-99 production. The behaviour of the waste forms produced were evaluated by measuring four required properties: setting time, hydration temperature of the fresh mixture, mechanical compressive strength and leaching rate of the hydrated product. (author). 33 refs., 20 figs., 16 tabs

Availability note (English)

Available from the Nuclear Information Center of the Brazilian Nuclear Energy Commission, Rio de Janeiro.

Additional details

Additional titles

Original title (Portuguese)
Uso de microssilica como aditivo na imobilizacao de rejeitos radioativos em cimento

Publishing Information

Imprint Pagination
71 p.

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
28076757
Subject category
S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES;
Resource subtype / Literary indicator
Numerical Data, Thesis, Non-conventional Literature
Descriptors DEI
CEMENTS; EXPERIMENTAL DATA; HYDRATION; ION EXCHANGE MATERIALS; IRON SILICATES; LEACHING; LIQUID WASTES; MATRIX MATERIALS; MECHANICAL PROPERTIES; RADIOACTIVE WASTE PROCESSING; RESINS; SILICON OXIDES; SOLIDIFICATION
Descriptors DEC
BUILDING MATERIALS; CHALCOGENIDES; DATA; DISSOLUTION; INFORMATION; IRON COMPOUNDS; MANAGEMENT; MATERIALS; NUMERICAL DATA; ORGANIC COMPOUNDS; ORGANIC POLYMERS; OXIDES; OXYGEN COMPOUNDS; POLYMERS; SEPARATION PROCESSES; SILICATES; SILICON COMPOUNDS; SOLVATION; TRANSITION ELEMENT COMPOUNDS; WASTE MANAGEMENT; WASTE PROCESSING; WASTES