clay content

clay content

Of a heterogeneous material such as soil or a natural concrete aggregate, the percentage of clay by weight.
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Edward Jones is a postdoctoral research fellow from the University of Sydney, who is working on new technology with Grains Research and Development Corporation (GRDC) investment, examining how sensors can be used to scan soil for properties such as clay content, water holding capacity, sodicity and pH.
We ascribe the effectiveness of the biocide combinations in the Arenosol to its lower clay content (1.7%) and organic C content (1.5%) than other soils.
Figure 2(a) presents a plot of moisture content versus time for four clay sand mixtures prepared at 15, 20, 25, and 30% clay content. The moisture is determined using a conventional approach for both gravimetric indicated as (Wc%) and volumetric indicated as ([theta]%).
One of the stresses in the unsaturated zone resulted from soil characteristics such as clay content [6].
[8] found that the coarse-grained soils can also produce obvious frost heave phenomenon under the combination of certain clay content (the mass fraction of the particle with a diameter less than 0.075 mm), initial moisture content, and temperature in seasonal frozen region.
Possible reasons for this phenomenon are as follows: (a) a structural disturbance due to remolding leads to a significant decrease in the dynamic strength; (b) the mudded intercalations tested in this work are partially composed of mixed montmorillonite/illite, which have relatively low strengths; and (c) the clay content varies depending upon the site, resulting in differences in the dynamic strength.
When the Dsmax values recorded for the soil samples studied were compared with the Dsmax when it had been assessed by the equation for the clay levels (MARCOLIN & KLEIN, 2011) (Figure 1e), the lines revealed similar tendencies, the difference being that the maximum density values were less; in fact, they were lower than those reported by the Dsmaxpedo transfer equation as a function of the clay content.
The results revealed that an increase in the clay content make the membrane become more porous, thin skin layer and increase the porosity of the membrane nanocomposite thus increase their hydrophilicity.
In this context, associate the application of adequate N and K doses in the period of greater demand by the cotton crop and considering the soil clay content can be a key approach to increase the crop yield.
Based on correlation coefficients and multivariate analyses including principal component (PCA) and cluster analyses (CA), soil properties of clay content, CEC and OM altered trace elements availability and consequently can modify the response of forage plant in study area.
evaluated low permeability reservoir comprehensively by selecting abundance, effective thickness, throat radius, volume percentage of mobile fluid, start-up pressure gradient, and effective driving factors based on the characteristics of low permeability reservoirs [5], and then, based on optimization, they established a comprehensive reservoir evaluation method for low permeability oil regions by selecting five parameters, namely, throat radius, volume percentage of mobile fluid, start-up pressure gradient, clay content, and crude oil viscosity [6].
Thus, the soil with higher clay content (21%) responded faster to the variation in soil compaction (Table 3).