LIME-FLY-ASH-SOIL COMPOSITIONS IN HIGHWAYS

HYDRATED LIME AND FLY-ASH HAVE BEEN FOUND TO BE QUITE EFFECTIVE FOR THE STABILIZATION OF VARIOUS TYPES OF SOIL. AN IMMEDIATE BENEFICIAL CHANGE IS BROUGHT ABOUT IN THE ENGINEERING PROPERTIES OF THE SOIL AS EVIDENCED BY A MARKED REDUCTION IN PLASTICITY INDEX, AN IMPROVEMENT IN SHRINKAGE AND DRAINAGE CHARACTERISTICS, ETC. DUE TO THE CEMENTING EFFECT CAUSED IN PART BY THE POZZOLANIC REACTION BETWEEN THE LIME AND FLY-ASH, THE COMPOSITIONS UPON AGING DEVELOP RELATIVELY HIGH COMPRESSIVE STRENGTH AND GOOD RESISTANCE TO FREEZING AND THAWING AND WETTING AND DRYING. OPTIMUM PROPORTIONS FOR THE COMPOSITIONS ARE INDICATED BY COMPRESSIVE STRENGTH TESTS AND FUNDAMENTAL TRANSVERSE FREQUENCY DETERMINATIONS. AN INVESTIGATION IS ALSO MADE OF A PULSE VELOCITY TECHNIQUE FOR EVALUATING THE DURABILITY AND FIELD PERFORMANCE OF THE COMPOSITIONS. SEVERAL EXPERIMENTAL FIELD PROJECTS ARE CARRIED OUT AND VALUABLE INFORMATION HAS BEEN RECEIVED CONCERNING THE FIELD PERFORMANCE OF LIME-FLY ASH COMPOSITIONS. RESULTS ARE GIVEN OF A FIELD PROJECT IN NEW JERSEY. SPECIMENS TAKEN FROM THIS PROJECT AFTER ONE YEAR SHOW THAT THE COMPRESSIVE STRENGTH OF THE LIME-FLY ASH MIXTURE HAS REACHED 2,400 PSI. MICROPHOTOGRAPHS HAVE BEEN MADE ON THIS MATERIAL AND THE FORMATION OF A CEMENTITIOUS MATRIX IS CLEARLY IN EVIDENCE. /AUTHOR/

  • Supplemental Notes:
    • Vol 31, pp 511-528, FIGS, 7 TAB, 4 PHOT, 4 REF
  • Authors:
    • Minnick, L J
    • MILLER, R H
    • Harroun, D T
  • Publication Date: 1952

Media Info

  • Monograph Title: Proceedings of the Thirty-First Annual Meeting of the Highway Research Board, Washington, D.C., January 15-18, 1952
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00217880
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Aug 1 1971 12:00AM