The hazard of blockage in the line or gear during grouting operations, may be avoided by keeping the grout moving fast by use of a circulation line containing high velocity grout pumped at more or less uniform pressure around to the job and back to an agitator for recirculation. Grout is taken off the circulation line at the grout hole as needed. Other advantages in this system are listed. Mixing is advocated in a "reversed turbine" type mixer with vortex classification and feeding. This has superior performance (rapid mixing, uniform grout, improved fluidity) and technically better grouts are produced (thorough wetting of each cement particle, neglible cement lumps, slight areation in the grout, stable grout). The opinion is expressed that compaction grouting may be regarded as virtually an extension of penetration grouting. Compaction grouting provides an extreme extension of the general case in its successful use of very high pressure at shallow depths with very thick mixes.

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Filing Info

  • Accession Number: 00096253
  • Record Type: Publication
  • Report/Paper Numbers: Discussion
  • Files: TRIS
  • Created Date: Jul 15 1975 12:00AM