EFFECTS OF HYDRATED LIME IN TREATING SOIL

LABORATORY TESTS PERFORMED TO GAIN A BETTER UNDERSTANDING OF LIME TREATMENT OF SOILS ARE DISCUSSED. THE EFFECTS OF FINENESS AND CALCIUM HYDROXIDE CONTENT OF LIME, VARIATIONS IN MIXING AND CURING PROCEDURES, AND OTHER RELATED SUBJECTS ARE DISCUSSED. TESTS SHOW THAT THE EFFECTIVENESS OF HYDRATED LIME USED FOR SOIL STABILIZATION IS PROPORTIONAL TO THE AMOUNT OF AVAILABLE CALCIUM HYDROXIDE IN THE LIME. LIME HAVING A LOW CALCIUM HYDROXIDE CONTENT CAN BE SATISFACTORILY USED PROVIDED THE RATIO OF LIME TO SOIL IS INCREASED TO MAKE AVAILABLE THE NECESSARY AMOUNT OF CALCIUM HYDROXIDE. NOT ALL OF THE CALCIUM HYDROXIDE IN COARSE LIME PARTICLES IS EFFECTIVE FOR SOIL STABILIZATION. WASTE LIME SLURRIES CAN BE SATISFACTORILY USED FOR SOIL STABILIZATION, PROVIDED THE MINIMUM REQUIRED CALCIUM HYDROXIDE CONTENT IS MAINTAINED. QUICKLIME CAN BE SATISFACTORILY USED, BUT THE COARSER SIZE LIME PARTICLES WILL REQUIRE ADDITIONAL LOOSE CURING TIME TO RELEASE THE AVAILABLE CALCIUM HYDROXIDE. A LONG LOOSE CURING TIME ADVERSELY AFFECTS THE R-VALUE, UNCONFINED COMPRESSIVE STRENGTH AND DENSITY OF A LIME TREATED SOIL. LIME TREATED SOIL. LIME TREATED MATERIALS SHOULD BE COMPACTED AS SOON AS POSSIBLE AFTER THOROUGH MIXING. THE FREEZE-THAW AND WET-DRY TESTS FOR CEMENT TREATED BASES ARE TOO SEVERE AS DURABILITY TESTS FOR LIME TREATED SOILS. FREEZING CONDITIONS DURING MIXING AND COMPACTING OF LIME TREATED SOILS WILL RETARD BUT NOT REDUCE THE ULTIMATE COMPRESSIVE STRENGTH. AUTOGENOUS HEALING OF CRACKS IN LIME TREATED MATERIAL IS VERY LIMITED. A SMALL AMOUNT OF DUST IN CRACKS OF LIME TREATED MATERIALS COMPLETELY PREVENTED AUTOGENOUS HEALING OF LABORATORY TEST SPECIMENS.

  • Supplemental Notes:
    • No M & R 643106, 36 PP, 19 FIG, 10 TAB, 1 REF
  • Corporate Authors:

    California Division of Highways

    Bridge Department
    Sacramento, CA  United States  05914
  • Authors:
    • Zube, E
    • Gates, C G
    • Hatano, M
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00232788
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 9 1970 12:00AM