swelling clay

swelling clay

[′swel·iŋ ¦klā]
(geology)
Clay that can absorb large amounts of water, such as bentonite.
References in periodicals archive ?
90 Project: Elephant Butte swelling clay reconstruction U.
The firm required additional time to overcome difficulties of squeezing salt and a swelling clay section which required the running of an extra casing interval.
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.
Nitrate and chloride leaching in a swelling clay soil.
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.
Usterts are self-mixing soils containing >35% shrinking and swelling clay.
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.
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.
Jayawardane NS, Meyer WS, Barrs HD (1983) Moisture measurement in a swelling clay soil using neutron moisture meters.
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.