Contract No. W-31-109 Eng"-52 LEGAL NOTICEpvvpuwl aa aa accooitt at Oovammaat aponaorwl work. Naltbar tha Uoltod CaamUaloa, aor aar paraoa actlof M bahalf of tha Coaunlsaloii: aagrwarnHrtr»'rapr»aantatlott,ex^«aa«dor impUad. with raapoct to tha accuor naaMaaaa (rf tha Infemutloa coolaload la Ihla raport. or Oat tha uaa apvaraiu. Batfeed, or procaaa dlaeloawl la tUa rapert aiay oat li>£rii«a iteior a«)r UaMUtloa wHk raapaet to tha u»a of. or tor daiaacaa raaolttnc from tha ' taferaatUa. spparatua, nathod, or procaaa dlaeloaad In thla raport. M« t> tha abon. "parwn acUag on bahalf of tha Conmtaakm-(Acludaa aaj meoatractor at Oa Coaunlaatoa, or am^oyaa of auch contractor, to tha axtont that OT of tha OoauaiaaloB. or aatiAoyaa of auch coatractor preparaa. or provldaa acoaaa to, any talariBatloa poraaaat to hla amployuant or contract OoMMtaaton. or hla amplayaMat with a«icb extractor.

of the Statistical Methods Section of the General Engineering Laboratory for performing the statistical l analyses.

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 (HRWFL4) 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 C U M . 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.

This document coii1MW|(^|0lcfil data at defined in the Atomic RM0k(Act of 1954 it* transmittal or tiio disclesnn|rits contents in any manner to an unauthorind person is preliibited.