00229573

Component

http://onlinepubs.trb.org...rbbulletin/159/159-004.pdf

NUCLEAR METHODS FOR MOISTURE AND DENSITY DETERMINATIONS IN SOILS HAVE REACHED A POINT OF DEVELOPMENT THAT MADES THEM VALUABLE TOOLS TO THE ENGINEER AND SCIENTIST. THE PAPER FIRST TRACES THE HISTORY OF THE AVAILABLE TECHNIQUES AND DISCUSSES THE UNDERLYING SCIENTIFIC PRINCIPLES AS WELL AS THE CARACTERISTICS OF THE VARIOUS AVAILABLE PROBES AND OF THEIR COMPONENTS. SUBSEQUENTLY, THE PRINCIPLES AND AVAILABLE METHODS OF SCINTILLATION DETECTION ARE DESCRIBED AND ARE APPLIED TO THE DESIGN OF ACTUAL MOISTURE AND DENSITY PROBES. THE PERFORMANCE OF THESE PROBES IN LABORATORY AND EXTENSIVE FIELD TESTS ARE GIVEN AND THEIR ADVANTAGES AND SHORTCOMINGS POINTED OUT. EMPHASIS IS PLACED ON MEETING THE PRACTICAL PROBLEMS ENCOUNTERED IN FIELD CONDITIONS AS THEY AFFECT THE OPERATION OF THE PROBES AND ASSOCIATED ELECTRONIC EQUIPMENT, THE PREPARATION OF HOLES THROUGH VARIOUS SOIL TYPES, THE READINGS OBTAINED BY THE INSTRUMENTS USED, AND THE CALCULATION OF RESULTS, SO AS TO GIVE THE MOST ACCURATE DETERMINATIONS OF SOIL MOISTURE AND DENSITY. /AUTHOR/

No 159, pp 58-135, 30 FIG, 3 TAB, 174 REF, 3 APP Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.

01410557

Proc 1963

78p

1957

Highway Research Board Bulletin

Digital/other

Density; Electronic equipment; Field tests; Granular soils; Measurement; Nuclear engineering; Nuclear tests; Scintillation counters; Soil tests; Soil water

Geotechnology; Highways

TRIS, TRB

Jul 6 1970 12:00AM

• A METHOD FOR CONTROLLING COMPACTION OF GRANULAR MATERIALS
• A STUDY OF IN-PLACE DENSITY DETERMINATIONS FOR BASE COURSES AND SOILS
• MAXIMUM DENSITY AND OPTIMUM MOISTURE OF SOILS