Geocement solidification technology for radioactive boron-containing liquid wastes

DOI

10.2991/ifeesm-17.2018.110How to use a DOI?

Keywords

Geocement, solidification technology, radioactive boron-containing liquid wastes

Abstract

The main problem of low-level radioactive wastes utilization in present technologies is lower waste containing capability and high leaching rates from the solidified body of compound. Also traditional OPC based grouts have low strength gain, especially at initial stages of hardening, caused mostly by influence of boron presence in the waste composition. The paper presents a solution to these problems by using geocement compositions, which provides bonding of radioactive elements not only in physical way, but also chemically by involving of elements into the new formations of cement stone. It has been show results of grout mix design of compositions with radioactive waste (RAW) content up to 20% by mass (in dry salts). The compositions under study met all the requirements for compressive strength (over 10MPa) and also shows very low leaching rates (leaching of Cs at 42 days of test 10-4).

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Hailin Cao
AU  - Luqian Weng
AU  - Pavle Krivenko
AU  - Shaobin Li
AU  - Oleg Petropavlovskii
PY  - 2018/02
DA  - 2018/02
TI  - Geocement solidification technology for radioactive boron-containing liquid wastes
BT  - Proceedings of the 2017 3rd International Forum on Energy, Environment Science and Materials (IFEESM 2017)
PB  - Atlantis Press
SP  - 581
EP  - 586
SN  - 2352-5401
UR  - https://doi.org/10.2991/ifeesm-17.2018.110
DO  - 10.2991/ifeesm-17.2018.110
ID  - Cao2018/02
ER  -