Effects of Access Tube Material and Grout on Neutron Probe Measurements in the Vadose Zone
作者:
B. R. Keller,
L. G. Everett,
R. J. Marks,
期刊:
Groundwater Monitoring&Remediation
(WILEY Available online 1990)
卷期:
Volume 10,
issue 1
页码: 96-100
ISSN:1069-3629
年代: 1990
DOI:10.1111/j.1745-6592.1990.tb00326.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
AbstractA test‐stand experiment was conducted on neutron probe measurements using steel and Schedule 40 PVC access tubes to determine the effect of backfill grout in boreholes. The experiment used a moveable simulated vadose zone. Access tubes and grout do have masking effects on vadose zone measurements, but vadose zone moisture was detected through all configurations tested. Steel tubing has a smaller masking effect than PVC tubing. The masking effect of grout increased with borehole diameter. Although this experiment produced numerical results, conclusions drawn are qualitative in nature, rather than a quantitative calibration of the techniqu
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