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Author: Robin P. Gardner Publisher: ISBN: Category : Radioactive gages Languages : en Pages : 56
Book Description
Sources of error that have been identified on the gamma-ray soil density gauge are: (1) sensitivity to local density variations, especially at the soil surface, (2) sensitivity to soil composition, and (3) inaccurate calibration techniques. An attempt was made to solve these problems by developing for each gauge calibration models that enable stable and homogenous non-soil standards to be used for calibration. Calibration standards and calibration models for each gauge were found and tested. In the process of developing and testing the new nuclear gauge calibration model, the dual-gauge principal of compensating these gauges for variations in soil composition was discovered. The air-gap method of using this principal is explained and was optimized by using the calibration model developed in the current study.
Author: Robin P. Gardner Publisher: ISBN: Category : Radioactive gages Languages : en Pages : 56
Book Description
Sources of error that have been identified on the gamma-ray soil density gauge are: (1) sensitivity to local density variations, especially at the soil surface, (2) sensitivity to soil composition, and (3) inaccurate calibration techniques. An attempt was made to solve these problems by developing for each gauge calibration models that enable stable and homogenous non-soil standards to be used for calibration. Calibration standards and calibration models for each gauge were found and tested. In the process of developing and testing the new nuclear gauge calibration model, the dual-gauge principal of compensating these gauges for variations in soil composition was discovered. The air-gap method of using this principal is explained and was optimized by using the calibration model developed in the current study.
Author: ASTM Committee D-18 on Soils for Engineering Purposes Publisher: ASTM International ISBN: Category : Nuclear physics Languages : en Pages : 113
Author: L. F. Ballard Publisher: ISBN: Category : Technology & Engineering Languages : en Pages : 46
Book Description
Data is provided from an evaluation of the accuracy of the nuclear gages in comparison with the currently used non- nuclear methods of determining soil density and moisture content. The research study was principally theoretical in nature and was conducted in two parts with each part respectively considering density and moisture content. Two existing commercial gages were evaluated, and a nominal experimental program employing non-soil standards of known density and composition was conducted to verify the density results. The results of the moisture content study were checked against data in the literature.
Author: Robin P. Gardner
Author: Robin P. Gardner
Author: ASTM Committee D-18 on Soils for Engineering Purposes
Author: L. F. Ballard
Author: L.F. Ballard
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Author: Charles A. Hughes
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