Admixture enhanced controlled low-strength material for direct underwater injection with minimal cross-contamination

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Commercially available admixtures have been developed for placing traditional concrete products under water. This paper evaluates adapting anti-washout admixture (AWA) and high range water reducing admixture (HRWRA) products to enhance controlled low-strength materials (CLSMs) for underwater placement. A simple experimental scale model (based on dynamic and geometric similitude) of typical grout pump emplacement equipment has been developed to determine the percentage of cementing material washed out. The objective of this study was to identify proportions of admixtures and underwater CLSM emplacement procedures which would minimize the cross-contamination of the displaced water while maintaining the advantages of CLSM. Since the displaced ... continued below

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16 p.

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Hepworth, H.K.; Davidson, J.S. & Hooyman, J.L. March 1, 1997.

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Description

Commercially available admixtures have been developed for placing traditional concrete products under water. This paper evaluates adapting anti-washout admixture (AWA) and high range water reducing admixture (HRWRA) products to enhance controlled low-strength materials (CLSMs) for underwater placement. A simple experimental scale model (based on dynamic and geometric similitude) of typical grout pump emplacement equipment has been developed to determine the percentage of cementing material washed out. The objective of this study was to identify proportions of admixtures and underwater CLSM emplacement procedures which would minimize the cross-contamination of the displaced water while maintaining the advantages of CLSM. Since the displaced water from radioactively contaminated systems must be subsequently treated prior to release to the environment, the amount of cross-contamination is important for cases in which cementing material could form hard sludges in a water treatment facility and contaminate the in-place CLSM stabilization medium.

Physical Description

16 p.

Notes

INIS; OSTI as DE97004112

Source

  • American Society for Testing and Materials (ASTM) symposium on the design and application of CLSM (flowable fill), St. Louis, MO (United States), 19-20 Jun 1997

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  • Other: DE97004112
  • Report No.: CONF-970675--1
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 471454
  • Archival Resource Key: ark:/67531/metadc681558

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • March 1, 1997

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  • July 25, 2015, 2:21 a.m.

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  • June 14, 2016, 1:55 p.m.

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Hepworth, H.K.; Davidson, J.S. & Hooyman, J.L. Admixture enhanced controlled low-strength material for direct underwater injection with minimal cross-contamination, article, March 1, 1997; Tennessee. (digital.library.unt.edu/ark:/67531/metadc681558/: accessed October 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.