Lan interconnection via ATM networks using the reverse multiplexing technique

Wang, Ling‐Hsiao; Tsai, Zuo‐Min

doi:10.1080/02533839.1995.9677742

Cited by 1 publication

(1 citation statement)

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“…As more and more engineering problems about heavy metal-contaminated clay were met with recently, some researchers began to pay attention to its engineering behaviour and corresponding mechanism. Lan [6] tried to interprete the chemical mechanism of strength decrease of subgrade soil through equilibrium adsorption test. Ouhadi et al [2] investigated bentonite-contaminant interaction at different pH levels and heavy metal ion concentrations, and their resultant effect on the mechanical behaviour of bentonite soil from a rheological point of view.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research on Engineering Property of Heavy Metal-Contaminated Kaolinite

Liu¹,

Dai³

2011

AMM

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Due to release and accumulation of industrial contaminants in natural soil in some regions, and the long-term interaction between leachate and clay which is adopted as isolation material of contaminants, the engineering property variation of clay soils after having been polluted by heavy metal ions gradually has drawn more and more attention of environmental geotechnical engineers. With relatively high chemical stability and low expansion coefficient kaolinite is widely distributed and usually used in engineering practice. In this research, Pb, Zn, and Cu-contaminated kaolinite specimens of controlled initial dry density and water content were manually prepared through static compaction. Then expansion capacity, unconfined compression, electrical resistivity and one-dimensional consolidation tests were conducted. It is found that the expansion capacity of contaminated kaolinite is influenced by the type and concentration of heavy metal ion. The unconfined compressive strength of heavy metal-contaminated kaolinite is decreased in a short period, but it may increase in a long term. Unconfined compressive strength of the same type of heavy metal-contaminated kaolinite will change with the contamination concentration. The electrical resistivity of kaolinite would be decreased when contaminated by heavy metal ions. The higher the contamination concentration is, the lower the electrical resistivity will be. All the compression indexes of heavy metal-contaminated kaolinite become lower than that of the clean kaolinite, and it also depends on both the type of heavy metal and contamination concentration. For the three types of heavy metal ions, Pb has the greatest influence on the engineering property of kaolinite, while the effects of Zn and Cu are quite similar.

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Section: Introductionmentioning

confidence: 99%