SWS Academic Research eLibraryEarth & Planetary Sciences

Scholarly record

ENGINEERING PROPERTIES OF CONCRETE SUITABLE FOR CONSTRUCTING PHYSICAL BARRIERS IN RADIOACTIVE WASTE DISPOSAL FACILITIES

Eva Vejmelkova

First published: 2017-06-20https://doi.org/10.5593/sgem2017/62/s26.019View metrics

Abstract

Several concrete mixtures suitable for constructing engineered barriers in radioactive waste disposal facilities are designed and tested. The mix design is based on the utilization of a natural sorbent acting, at the same time, as supplementary cementitious material replacing a part of Portland cement and fine filler capable of radionuclide absorption and fixing. A representative set of engineering properties of the hardened concrete mixes is determined, including the pore size distribution, bulk density, matrix density, open porosity, compressive strength, water absorption coefficient, and apparent moisture diffusivity. Experimental results show that an appropriate dosage of the natural sorbent in the analyzed concrete is within the range of 30-50% of the mass of Portland cement. This level of Portland cement replacement makes possible to utilize effectively the pozzolanic properties of the sorbent and still preserve its necessary amount in the nonhydrated state. The mechanical properties of concrete are then satisfactory for the supposed load, the water-penetration protection ability is sufficient, and the microcrystalline structure of non-hydrated sorbent can provide a sufficient interior pore surface area for fixing the anticipated radionuclide dose.

Publication Impact Profile

PlumX
  • Captures
  • Mendeley - Readers: 4
PLUMX see details

Publication details

Title
ENGINEERING PROPERTIES OF CONCRETE SUITABLE FOR CONSTRUCTING PHYSICAL BARRIERS IN RADIOACTIVE WASTE DISPOSAL FACILITIES
Authors
Eva Vejmelkova
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Nano, Bio and Green - Technologies for a Sustainable Future
Publisher
STEF92 Technology
Year
2017
Pages
147-154
SWS Citekey
Vejmelkova201726147154
ISSN
1314-2704
ISBN
978-619-7408-13-3
Language
en
Publication type
Conference Paper
Keywords
cement compositesradioactive waste disposalengineering propertiespore size distribution
References0
0references registered for this publication

Structured references will appear here after the reference import pass. The count is preserved now so the scholarly record is not incomplete.

View or Download full articleAccess options
Full paper accessChoose SWS login, librarian support, or instant article download.

SWS access login

Login as SWS Scientific Committee

Authors and approved SWS contributors will read and export their own linked papers after identity matching by SWS profile, email and SGEM GlobalID.

For librarian assistance: [email protected]

Purchase Instant Access

48-hour online accessComing soon
Online-only accessComing soon
Download the full article in PDF formatEUR 35
  • Article can be downloaded after successful payment.
  • Article may be used according to SWS library access terms.
  • Article cannot be redistributed.
Get full paper

Back to publication list