Particle size distribution analysis of soils using laser diffraction
نویسندگان
چکیده
منابع مشابه
Adequacy of laser diffraction for soil particle size analysis
Sedimentation has been a standard methodology for particle size analysis since the early 1900s. In recent years laser diffraction is beginning to replace sedimentation as the prefered technique in some industries, such as marine sediment analysis. However, for the particle size analysis of soils, which have a diverse range of both particle size and shape, laser diffraction still requires evalua...
متن کاملCritical Evaluation of the Use of Laser Diffraction for Particle-Size Distribution Analysis
m) by wet sieving from the clay and silt (particles 50 m). The sand fraction is determined by drying and Determination of soil particle-size distribution (PSD) by sieving, weighing the material remaining on the sieve. The silt hydrometer, and pipette methods as well as by laser diffraction (LD) suffers from inherent flaws, mainly due to the difficulty in defining and clay fractions are then det...
متن کاملCritical Evaluation of Particle Size Distribution Models Using Soil Data Obtained with a Laser Diffraction Method
Mathematical descriptions of classical particle size distribution (PSD) data are often used to estimate soil hydraulic properties. Laser diffraction methods (LDM) now provide more detailed PSD measurements, but deriving a function to characterize the entire range of particle sizes is a major challenge. The aim of this study was to compare the performance of eighteen PSD functions for fitting LD...
متن کاملMethodological aspects of determining soil particle-size distribution using the laser diffraction method
This paper presents the influence of selected methodological aspects on the results of particlesize distribution (PSD) as measured by the laser diffraction method (LDM). The investigations were carried out using the Mastersizer 2000 with Hydro MU attachment (Malvern Ltd., UK). It was found that for the investigated soils: (1) optimal speed of pump and stirrer was 2500 rpm, (2) optimal measureme...
متن کاملMeasuring Particle Size Distribution Using Laser Diffraction: Implications for Predicting Soil Hydraulic Properties
Methods to predict soil hydraulic properties frequently require information on the particle size distribution (PSD). The objectives of this study were to investigate various protocols for rapidly measuring PSD using the laser diffraction technique, compare the obtained PSD with those determined using the traditional hydrometer-and-sieves method (HSM), and assess the accuracy of soil hydraulic p...
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ژورنال
عنوان ژورنال: Forensic Science International
سال: 1987
ISSN: 0379-0738
DOI: 10.1016/0379-0738(87)90147-2