Use of an accelerated migration test to study alteration of backfill in contact with concrete

Hao Chun Chang, Chun Yao Wang, Wei Hsing Huang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Zhishin clay and Black Hill bentonite are used as raw clay materials in this study. These clays are mixed with Taitung area hard shale to produce the backfill material for potential application as barrier for the disposal of low-level radioactive waste. The interaction between concrete barrier and the backfill materials is simulated by an accelerated migration test to investigate the effect of concrete on the expected functions of backfill material. The results show some decrease in swelling potential in the backfill material near the interface. Also, backfill material close to the contact with concrete exhibits greater change in the ratio of calcium/sodium concentration, due to the release of calcium ions from the concrete material.

Original languageEnglish
Title of host publicationTrends in Civil Engineering
Pages3682-3689
Number of pages8
DOIs
StatePublished - 2012
Event2nd International Conference on Structures and Building Materials, ICSBM 2012 - Hangzhou, China
Duration: 9 Mar 201211 Mar 2012

Publication series

NameAdvanced Materials Research
Volume446-449
ISSN (Print)1022-6680

Conference

Conference2nd International Conference on Structures and Building Materials, ICSBM 2012
Country/TerritoryChina
CityHangzhou
Period9/03/1211/03/12

Keywords

  • Accelerated electro-osmosis test
  • Backfill material
  • Swelling behavior

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