Identification and Classification of Expansive Soils Based on Attribute Recognition Theory

This study developed an evaluation model of freeway traffic safety facilities system. Firstly, an evaluation system of freeway traffic safety facility was proposed. Secondly, an evaluation model was proposed based on attribute recognition theory. And the evaluation result was identified according to the attribute measure value of single index and the comprehensive attribute measure value of multiple indexes as well as the confidence criterion. Thirdly, the weight of each indicator was decided by variation coefficient. Finally, A case of TAI-GAN freeway (K1+242~K3+259 segment) was conducted to verify the feasibility and effectiveness of the model.

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Soil Water Retention-Based Methodology for the Classification of Expansive Soils

Geo-Chicago 2016 ◽

10.1061/9780784480144.086 ◽

2016 ◽

Cited By ~ 4

Author(s):

Morteza Khorshidi ◽

Ning Lu

Keyword(s):

Soil Water ◽

Water Retention ◽

Expansive Soils ◽

Soil Water Retention

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Shrinkage properties of natural and diesel oil-contaminated fine soils from central Poland

Quarterly Journal of Engineering Geology and Hydrogeology ◽

10.1144/qjegh2021-006 ◽

2021 ◽

pp. qjegh2021-006

Author(s):

Dorota Izdebska-Mucha ◽

Emilia Wójcik

Keyword(s):

Expansive Soils ◽

Diesel Oil ◽

Hydrocarbon Contamination ◽

Volumetric Shrinkage ◽

Limit Values ◽

Central Poland ◽

Shrinkage Behaviour ◽

Margin Of Safety ◽

Glacial Tills

The objectives of this paper are to provide a regional description of the shrinkage parameters of Neogene clays and glacial tills from central Poland; and to present the effects of hydrocarbon contamination on the shrinkage behaviour of soils. Forty samples containing from 19 to 90% clay-size particles were tested. The comparison of the three methods applied has indicated that the shrinkage limit values obtained by the BS 1377-2 method provide a greater margin of safety when used in the classification of expansive soils and yield the best matching in the analysis of the variability of the shrinkage limit in relation to other soil index parameters. A good correlation was found between the shrinkability index and the consistency index, which leads to a new classification of soils. The shrinkage tests of clean and diesel oil-contaminated samples revealed that contamination has a significant and irregular effect on the values of shrinkage parameters. For low degree of contamination the shrinkage limit of both soils had the lowest values and the volumetric shrinkage was maximum, and then with increasing ON content the shrinkage limit values tend to increase, while the volumetric shrinkage decreased.

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