Author: Nari K. VaswaniPublisher:
ISBN:
Category : Soil moisture
Languages : en
Pages : 28
Book Description
Nuclear Measurement of Subgrade Moisture
Author: Nari K. VaswaniPublisher:
ISBN:
Category : Soil moisture
Languages : en
Pages : 28
Book Description
Progress Report of the Measurements of Subgrade Moisture and Density with Nuclear Devices
Author: H. H. RixPublisher:
ISBN:
Category : Highway research
Languages : en
Pages :
Book Description
Nuclear Science Abstracts
Author: Density and Moisture Content Measurements by Nuclear Methods
Author: Robin P. GardnerPublisher:
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.
Nuclear Metering of Soil Density and Moisture Content at Depth
Author: D. G. TruePublisher:
ISBN:
Category : Errors
Languages : en
Pages : 82
Book Description
A study was conducted of the potential applicability of nuclear measuring techniques for determining soil density and moisture content at depth, and changes in these properties, for Navy civil engineering purposes. Measurements were obtained under two different types of engineering requirement to assess measurement capabilities: (1) in base material and subgrade soil beneath the pavements at five airfields, to detect long term variations; (2) in hydraulically placed foundation soils at two construction sites, both before and after densification of the soil was attempted by driving compaction piles, to detect changes due to the densification effort. The data were analyzed and statistical procedures were developed to determine the magnitudes of measurement error. Measurement errors were relatively low compared with the measured temporal variations in the soil properties at th soil densification sites, but were so large as to obscure a large portion of low-level, long-term changes occurring in the pavement subgrades. (Author).
Methods of Measuring Soil Moisture in the Field
Author: Arnold Ivan JohnsonPublisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 36
Book Description
Evaluates methods for measuring soil moisture and describes the equipment used.
Measurement of Moisture and Density in Soils by the Nuclear Method
Author: Density and Moisture Content Measurements by Nuclear Methods
Author: L. F. BallardMeasurement of Moisture and Density in Soils by the Nuclear Method
Author: John L. KuranzPublisher:
ISBN:
Category : Soil moisture
Languages : en
Pages : 9
Book Description
Symposium on Nuclear Methods for Measuring Soil Density and Moisture
Author: ASTM Committee D-18 on Soils for Engineering PurposesPublisher: ASTM International
ISBN:
Category : Nuclear physics
Languages : en
Pages : 113
Book Description