Design and calibration of a neutron moisture meter

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AuthorSearch for:
TypeArticle
Journal titleASTM Special Technical Publication
ISSN0066-0558
Issue293
Pages1426; # of pages: 13
AbstractA probe using an actinium-beryllium neutron source and a scintillation-type detector was designed and built for use in determining the moisture density in soils below the surface of the ground. A portable battery-operated scaler was selected to make it possible to use the equipment in places where there is no available a-c supply. Since the principle of the neutron moisture meter is based upon the physical interaction of neutrons with hydrogen atoms, considerable thought was given to the idea of calibrating the instrument in media other than actual soils; the advantages of using substitute materials are better uniformity and better control of both bulk density and distribution of hydrogen atoms. Requirements of the artifical media are discussed and those adopted for calibration are described.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
IdentifierDBR-RP-129
NRC number6131
1336
NPARC number20378831
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Record identifierf53ec7b9-e87a-43c1-af14-0d38b4a95183
Record created2012-07-24
Record modified2016-05-09
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