swelling clay

swelling clay

[′swel·iŋ ¦klā]
(geology)
Clay that can absorb large amounts of water, such as bentonite.
References in periodicals archive ?
It is commonly called a swelling clay -- the kind that sticks to your boot when you step in it.
However, it still remains one of the most difficult measurements to perform with a high degree of accuracy in swelling clay soils, particularly at the wet end.
If swelling clay minerals occur in the fractures, expansion of the clays may cause the fractures to close, reducing the water movement along the fractures.
2005), coupled with the frequent calculation of either inflated or negative conductivities, has led to skepticism about the usefulness and reliability of disc permeameters as a tool for measuring hydraulic properties of swelling clay soils.
It is a swelling clay made up of layers formed by a condensation of two silicon-oxygen tetrahedral sheets and one aluminum or magnesium-oxygen-hydroxyl octahedral sheet (5); the layer thickness is 0.
Complementing the calcium bentonite is sodium bentonite, a natural swelling clay which provides strong clumping.
Usterts are self-mixing soils containing >35% shrinking and swelling clay.
Topics included the Memorial Park Demonstration Project; funding for and efforts to make better, sustainable streets and drainage systems under the Rebuild Houston plan; and case studies highlighted using the Potential Vertical Rise (PVR) method used to predict the behavior of swelling clay soils.
This trend reflects differences in clay content and type, with the northernmost areas having greater clay contents and proportions of swelling clay minerals, and a relative absence of mica and kaolinite in both the total and fine clay fractions.
Jayawardane NS, Meyer WS, Barrs HD (1983) Moisture measurement in a swelling clay soil using neutron moisture meters.
LIQUID PAC: This drispac polymer that has been proven effective in battling swelling clay and seepage loss.
Despite the above-mentioned drawbacks, the alkylammonium method is considered to be the most reliable method for measuring the layer charge of swelling clay minerals in a mixture of minerals.