Admixture enhanced controlled low-strength material for direct underwater injection with minimal cross-contamination
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.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Environmental Restoration and Waste Management, Washington, DC (United States)
- DOE Contract Number:
- AC05-96OR22464
- OSTI ID:
- 471454
- Report Number(s):
- CONF-970675-1; ON: DE97004112; TRN: 97:009904
- Resource Relation:
- Conference: 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; Other Information: PBD: 1997
- Country of Publication:
- United States
- Language:
- English
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