Controlled low-strength material (CLSM) is a self-compacted, cementitious material used primarily as a backfill in lieu of compacted fill. Many terms are currently used to describe this material including flowable fill, unshrinkable fill, controlled density fill, flowable mortar, flowable fly ash, fly ash slurry, plastic soil-cement, soil-cement slurry, K-Krete (trade name), and other various names. This report contains information on CLSM applications, material properties, mix proportioning, construction, and quality-control procedures. This report's intent is to provide basic information on CLSM technology, with emphasis on CLSM material characteristics and advantages over conventional compacted fill.


  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 55-64
  • Serial:
    • Concrete International
    • Volume: 16
    • Issue Number: 7
    • Publisher: American Concrete Institute (ACI)
    • ISSN: 0162-4075

Subject/Index Terms

Filing Info

  • Accession Number: 00664734
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 12 1994 12:00AM