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dc.contributor.authorWilliamson, Albert N.-
dc.identifier.govdocTechnical Report M-70-14 Rept.2-
dc.descriptionTechnical Report-
dc.description.abstractA study was conducted to determine the feasibility of using measurements made with a multichannel gamma-ray spectrometer and a cobalt 60 radiation source for accurately determining soil density and resolving the density profile of layers. Measurements were first made on aluminum and steel plates to establish a standard reference for computing soil density. Two samples of air-dry sand were constructed at different densities to depths of approximately 120 and 125 cm in a pit 51.82 m long and 3.54 m wide. Measurements were made at depth intervals of 12.7 cm in each of six access holes located in the samples. The densities determined were compared with densities determined by nonnuclear means. Results of this study indicate that density can be measured accurately by the method described herein provided (a) the thickness through which the measurements are made. is accurately measured, and (b) the source strength and detector are suitable for the distance over which the density is measured. The combination of source and detector that was used permitted defining soil density profiles. As a result of this study, it is recommended that the method described herein be used for nondestructive soil density measurements where the density beneath the surface of a sample must be known.en_US
dc.description.sponsorshipUnited States. Assistant Secretary of the Army (R & D)en_US
dc.description.tableofcontentsCONrEN'I'S NO'J'ATION COlN1':T\SION T"ACTORS' MJ~'l'HIC TO DHI'rISll UNITS OF MEASUREM};r.rr surr.MAHY PJ\HT I: INTRODUCTION Back1~round . . . . Purpose and Scope PAHT II: HA'L'IONAJ_,E • • PAJ\T III: 'I'ES'l' EQUIPMEN'r Mm PHOGl\.AM Equipment .... Test Program . . . PAH'I' IV: J\EDUCTION AND ANALYSIS OF DATA Data Reduction . Test Results . . Analysis of Data PART V: CONrn.USJONS ANTI I\~~COMMENDA'l'JOl'JS Conclusions Recommendations J.Tl' iiIWWRE CITED • • • PTiATf~S 1-5 vii Page v ix xi xii.i 1 L ') '-3 6 G 9 . 16 1G 26 27 36 36 36 37-
dc.format.extent71 pages/4.400 Mb-
dc.publisherMobility and Environmental Systems Laboratory (U.S.)en_US
dc.publisherU.S. Army Engineer Waterways Experiment Station.en_US
dc.relation.ispartofseriesTechnical Report (U.S. Army Engineer Waterways Experiment Station) ; M-70-14 Rept.2-
dc.rightsApproved for Public Release; Distribution is Unlimited-
dc.sourceThe ERDC Library created this digital resource using one or more of the following: Zeta TS-0995, Zeutchel OS 12000, HP HD Pro 42-in. map scanner, Epson flatbed-
dc.subjectSoil penetration testen_US
dc.subjectGamma raysen_US
dc.subjectSoil densityen_US
dc.titlePenetration resistance of soils. Report 2, Gamma-ray techniques for nondestructive measurements of soil density and density profileen_US
Appears in Collections:Technical Report

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