Vol. 8, No 1, 2011 pp. 1 - 5
UDC 691.32:621.642.8:621.039.58:616-089.22
A LEACHING STUDY IN THE PROCESS OF SOLIDIFICATION OF RADIONUCLIDE 137Cs IN CONCRETE
Ilija Plecas
"VINCA" Institute of Nuclear Sciences, P.Box. 522, 11001 Belgrade, Serbia
iplecas@vinca.rs
Abstract.
To assess the safety of the disposal of radioactive waste – of cement composition, the leaching of 137Cs from a waste composite into surrounding fluids has been studied. Leaching tests were carried out in accordance with the method recommended by the IAEA. The determination of retardation factors, KF and the coefficients of distribution, kd, using a simplified mathematical model for analyzing the migration of radionuclides, has been developed. The results presented in this paper are examples of results obtained in a 20 year mortar and concrete testing project, which will influence the design of the engineered trenches system for a future central radioactive waste disposal center.
Key Words:
concrete, leaching, immobilization, radioactive waste
ANALIZA PROCESA CURENJA U PROCESU SOLIDIFIKACIJE RADIONUKLEIDA 137Cs U BETONU
Za procenu bezbednosti odlaganja radioaktivnog otpada - cementnog sastava, analizirano je curenje137Cs od kompozita otpada u okolne tečnosti. Testovi su obavljeni u skladu sa metodom preporučene od strane IAEA. Određivanjem faktora retardacije, FK i koeficijenta raspodele, kd, razvijen je pojednostavljeni matematički model za analizu migracija radionuklida. Rezultati prezentovani u ovom radu su primeri rezultata dobijenih tokom 20 godina testiranja maltera i betona, projekta koji će uticati na dizajn sistema projektovanja rovova za buduće centrale radioaktivnog centra za odlaganje otpada.
Ključne reči: beton, curenja, imobilizacija, radioaktivni otpad
