ENGINEERING INDEX PROPERTIES OF SOME SURFICIAL SOILS IN ILLINOIS

FROM 120 SITES IN NINE DIFFERENT COUNTIES IN ILLINOIS, SOIL SAMPLES WERE OBTAINED WITH AN AUGER FROM THE A, B AND C HORIZONS OF TEN SOIL TYPES OF THE HUMIC-GLEY GREAT SOIL GROUP. THESE SAMPLES WERE SUBJECTED TO CLASSIFICATION TESTS. ON THE BASIS OF STATISTICAL ANALYSIS OF SIX INDEX PROPERTIES /LIQUID LIMIT, PLASTICITY INDEX, PERCENTAGES PASSING SIEVE NOS. 20, 40 AND 200, AND PER CENT CLAY LESS THAN 2 MU/, IT HAS BEEN FOUND THAT THE VARIABILITY OF EACH SOIL TYPE DEPENDS ON NOT ONLY THE CHARACTER OF THE PARENT MATERIAL BUT ALSO THE PROFILE CHARACTERISTICS DEFINED BY THE PEDOLOGISTS. FURTHERMORE, FROM THE ENGINEERING STANDPOINT, THESE SOIL TYPES CAN NOT BE GROUPED TOGETHER BY USING THE GEOLOGICAL ORIGIN OF THE PARENT MATERIAL ALONE, THEY CAN, HOWEVER, BE GROUPED TOGETHER BY THE CHARACTER OF PARENT MATERIAL. THE GRAIN SIZE TEST RESULTS OBTAINED BY SIEVE AND HYDROMETER ANALYSES INDICATE THAT APPROXIMATELY 60% OF THE SAMPLES TESTED HAVE THE MODAL TEXTURE OF TYPICAL SOIL TYPES ACCORDING TO THE UNITED STATES DEPARTMENT OF AGRICULTURE TEXTURAL SOIL CLASSIFICATION SYSTEM. THIS STUDY HAS POINTED OUT THE IMPORTANCE OF A KNOWLEDGE OF PEDOLOGY TO SOILS ENGINEERS, PARTICULARLY THOSE WHO ARE CONCERNED WITH DESIGN OF TRANSPORTATION FACILITIES. THIS INVESTIGATION HAS ALSO REVEALED HOW STATISTICS MAY BE USED IN THE STUDY OF NATURAL SOIL DEPOSITS AND SOILS RESEARCH. APPENDICES ARE INCLUDED ON ' PEDOLOGICAL PROFILE DESCRIPTION AND EXPECTED ENGINEERING PROPERTIES AND CLASSIFICATION; TEST DATA SUMMARY SHEETS; SUMMARY OF STATISTICAL DATA ON INDEX PROPERTIES. /RRL/A/

• Supplemental Notes:
  • Bull477, 111PP, 16FIG, 15TAB, 16REF
• Authors:
  • Liu, T K
  • Thornburn, T H
• Publication Date: 0

Media Info

• Serial:
  • Illinois Univ Eng Res Inst Bulletin

Subject/Index Terms

• TRT Terms: Atterberg limits; Boring; Classification; Clay; Drilling; Exploration; Grain size (Geology); Hydrometers; Liquid limits; Parent materials; Percent; Plasticity index; Properties of materials; Sampling; Sieve analysis; Soil groups; Soil mechanics; Soil profiles; Soil types; Soils; Statistical analysis; Tests
• Uncontrolled Terms: Soil classification; Soil properties
• Geographic Terms: Illinois; United States
• Old TRIS Terms: Humic-gley soils; Pedological classification systems; Soil sampling
• Subject Areas: Data and Information Technology; Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00228745
• Record Type: Publication
• Source Agency: Road Research Laboratory /UK
• Files: TRIS
• Created Date: Aug 15 2004 1:47AM