Collier, N.C., Milestone, N.B. and Travis, K.P. orcid.org/0000-0001-8557-2689 (2017) Lessons Learnt from the Development of Cementitious Grouts for Deep Borehole Disposal Applications. Journal of Materials in Civil Engineering, 29 (10). 04017197. ISSN 0899-1561
Abstract
The performance of grouts made using oilwell cement is markedly different above 90°C than at lower temperatures, and the rapidity with which grouts thicken can cause failures in well cementing. One grouting application in which such temperatures are encountered is deep borehole disposal (DBD). DBD is a concept for disposing of high-level radioactive wastes where the temperature and pressure will be 90–140°C and 30–50 MPa, respectively. In developing DBD grouts, a number of issues have been identified that will be of interest to well-cementing organizations. (1) The type of retarder used to delay grout thickening above 90°C is of extreme importance, and should be selected based on local temperature, pressure, and geochemical environment. Addition level might vary considerably depending on the retarder used. (2) Temperature and pressure will shorten the time for grouts to thicken, particularly the former. Water content will also affect grout properties such as consistency, viscosity, and flow. (3) The retarder may not influence hardened grout composition, which suggests that only the time at which the cement hydration reactions occur is influenced.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | This work is made available under the terms of the Creative Commons Attribution 4.0 International license, http://creativecommons.org/licenses/by/4.0/ |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) |
Funding Information: | Funder Grant number ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL (EPSRC) EP/K039350/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 14 Sep 2017 14:52 |
Last Modified: | 14 Sep 2017 14:52 |
Published Version: | https://doi.org/10.1061/(ASCE)MT.1943-5533.0002006 |
Status: | Published |
Publisher: | American Society of Civil Engineers |
Refereed: | Yes |
Identification Number: | 10.1061/(ASCE)MT.1943-5533.0002006 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:121175 |