Evaluation of Concretes for High Level Nuclear Waste Repositories

Title: Evaluation of Concretes for High Level Nuclear Waste Repositories
Author(s): Hidalgo
Paper category : conference
Book title: International RILEM Conference on the Use of Recycled Materials in Building and Structures
Editor(s): E. Vázquez, Ch. F. Hendriks and G.M.T. Janssen
Print-ISBN: 2-912143-52-7
e-ISBN: 2912143756
Publisher: RILEM Publications SARL
Publication year: 2004
Pages: 945 - 952
Total Pages: 8
Nb references: 9
Language: English

Abstract: Many designs for radioactive waste confinement,particularly in deep geological
underground disposal,envisage the presence of cementitious materials in conjunction with
clay barriers. Two types of rocks are the main options to host a repository in Spain, granite
and clay. In realistic conditions, relevant to high level radioactive waste repositories,
repository durability is limited by concrete interaction with clays, host-rock and groundwater.
Typical cement pore fluids have pH>12, and could induce mineralogical transformations in
clay materials over long time periods, as predicted by models. The evolution of the pH of
waters in contact with cementitious materials will vary depending of the type of cement used
to produce concrete. This work try to address different aspects of long-term cement-based
materials behaviour.

Online publication: 2004-09-29
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143756.104

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