CEMENT REQUIREMENT OF SELECTED SOIL SERIES IN IOWA

PREVIOUS WORK HAS SHOWN GOOD CORRELATION BETWEEN CEMENT REQUIREMENTS FOR SOIL-CEMENT AND SPECIFIC HORIZONS IN 43 AGRICULTURAL SOIL SERIES IN SEVERAL GREAT PLAINS STATES, WASHINGTON, AND IDAHO. TO CHECK THE VALIDITY OF SUCH CORRELATIONS FURTHER AND TO EXPAND THE RESULTS TO IOWA, A NUMBER OF LOESS, SAND AND GLACIAL TILL SOIL SERIES WERE SAMPLED IN VARIOUS HORIZONS AND TESTED. INSTEAD OF SELECTING MODAL SAMPLES FROM A SERIES, MANY SERIES ARE REPRESENTED BY MODAL SAMPLES AND BY EXTREMES TO PROVIDES A MORE RIGOROUS TEST. ZONAL GREAT SOIL GROUPS REPRESENTED ARE BRUNIZEM AND GRAY-BROWN PODZOLIC. THE DOMINANT CLAY MINERAL IS MONTMORILLONITE. CEMENT REQUIREMENT CORRELATIONS RANGED FROM GOOD TO POOR. REASONS FOR POOR CORRELATIONS ARE THAT CEMENT REQUIREMENTS FOR SOME FINE-GRAINED IOWA SOILS WERE ABNORMALLY HIGH DUE TO FREEZE-THAW SENSITIVITY, AND THAT SOME SERIES ARE TOO BROADLY DEFINED TO DISTINGUISH ADEQUATELY THE SENSITIVE FROM NON-SENSITIVE SOIL. MAJOR DIFFERENCES RELATING TO GREAT SOIL GROUP AND B HORIZON STRUCTURE WERE ALSO FOUND. INVESTIGATIONS OF IOWA FINE SANDS SHOWED GOOD CORRELATION OF CEMENT REQUIREMENTS WITH GEOLOGIC ORIGIN, WHICH IS NOT REFLECTED IN THE SOIL SERIES DESIGNATIONS ON PUBLISHED SOIL MAPS. THE SANDS ARE A VALUABLE RESOURCE FOR USE IN SOIL-CEMENT. /AUTHOR/

Media Info

  • Monograph Title: Water tensions: swelling mechanisms: strength of compacted soil
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00213201
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Aug 5 1994 12:00AM