scholarly journals Chinese Macroliquidity System and Comprehensive Liquidity Index

2021 ◽  
Author(s):  
Wenhao Lai
Keyword(s):  
Liquidity Index

Relationship between liquidity index and stabilized strength of local subgrade materials in a tropical area

Measurement ◽  
2014 ◽  
Vol 55 ◽  
pp. 231-237 ◽  
Author(s):  
Ahmad Safuan A. Rashid ◽  
Roohollah Kalatehjari ◽  
Norhazilan Md Noor ◽  
Haryati Yaacob ◽  
Hossein Moayedi ◽  
...  
Keyword(s):  
Tropical Area ◽  
Liquidity Index

scholarly journals Relationship between consistency parameters and granulation of fen soils

2013 ◽  
Vol 12 (3) ◽  
pp. 121-128
Author(s):  
Krzysztof Wilk
Keyword(s):  
Complex Analysis ◽  
Linear Equations ◽  
Clay Fraction ◽  
Building Design ◽  
Liquid Limit ◽  
Soil Parameters ◽  
Geotechnical Parameters ◽  
Substrate Quality ◽  
Liquidity Index ◽  
Clay Fraction Content

Determination of bearing capacity requires knowledge of the ground strength parameters. The best way to appreciate soil properties is the use of the direct research methods. In the case of less responsible buildings, projected on the simple ground structure, it often seems reasonable to adopt conservative soil parameters without performing a complex analysis. The base for determination the values of the geotechnical parameters is the estimation based on the correlation between the mechanical and geotechnical parameters of soil. It is important not only for the new building design, but also to facilitate the verification of the substrate quality during the execution of the work. This paper presents the relationship between granulation (clay fraction content) and soil consistency parameters (plastic limit, liquid limit, plasticity index and liquidity index). The analyzed values are determined as a result of alluvial ground studies. These soils were consequent upon the accumulation of river. The founded relationships were described by linear equations and were compared with the results presented in the geotechnical literature. These comparisons often show a significant effect of regional ground forming  conditions on the parameters of consistency.

scholarly journals Spotted Hyena Optimizer and Ant Lion Optimization in Predicting the Shear Strength of Soil

2019 ◽  
Vol 9 (22) ◽  
pp. 4738 ◽  
Author(s):  
Moayedi ◽  
Bui ◽  
Anastasios ◽  
Kalantar
Keyword(s):  
Shear Strength ◽  
Liquid Limit ◽  
Spotted Hyena ◽  
Key Factors ◽  
Ant Lion Optimization ◽  
Liquidity Index ◽  
Ant Lion ◽  
Artificial Neural Network Ann ◽  
Metaheuristic Techniques ◽  
Clay Percentage

Two novel hybrid predictors are suggested as the combination of artificial neural network (ANN), coupled with spotted hyena optimizer (SHO) and ant lion optimization (ALO) metaheuristic techniques, to simulate soil shear strength (SSS). These algorithms were applied to the ANN for counteracting the computational drawbacks of this model. As a function of ten key factors of the soil (including depth of the sample, percentage of sand, percentage of loam, percentage of clay, percentage of moisture content, wet density, liquid limit, plastic limit, plastic Index, and liquidity index), the SSS was considered as the response variable. Followed by development of the ALO–ANN and SHO–ANN ensembles, the best-fitted structures were determined by a trial and error process. The results demonstrated the efficiency of both applied algorithms, as the prediction error of the ANN was reduced by around 35% and 18% by the ALO and SHO, respectively. A comparison between the results revealed that the ALO–ANN (Error = 0.0619 and Correlation = 0.9348) performs more efficiently than the SHO–ANN (Error = 0.0874 and Correlation = 0.8866). Finally, an SSS predictive formula is presented for use as an alternative to the difficult traditional methods.

The correlation of index properties with some basic engineering properties of soils

1978 ◽  
Vol 15 (2) ◽  
pp. 137-145 ◽  
Author(s):  
C. P. Wroth ◽  
D. M. Wood
Keyword(s):  
Soil Mechanics ◽  
Liquid Limit ◽  
Engineering Properties ◽  
Cone Penetrometer ◽  
Plastic Limit ◽  
The North ◽  
The United Kingdom ◽  
Liquidity Index ◽  
Remoulded Soil ◽  
The North Sea

Experimental evidence is produced to show that it is reasonable to assign a unique strength to all soils when at their respective liquid limits, and to redefine the plastic limit as the water content at which the strength is 100 times that at the liquid limit. Combining these assumptions with ideas of critical state soil mechanics it is then possible to relate the compression index of the remoulded soil to its plasticity index, and to suggest a unique relation between remoulded strength and liquidity index, irrespective of actual values of liquid and plastic limits. Field data from the Gulf of Mexico and from the North Sea are presented in support of these relations. The predictions of strength are best for overconsolidated clays, having water contents near the plastic limit.Recently in the United Kingdom the cone penetrometer has become the recommended test for determination of the liquid limit, in preference to the Casagrande test. Having redefined the plastic limit it would be logical to use the cone penetrometer to determine this too, by using cones with different weights. Experimental data are shown to illustrate and support this proposal.

scholarly journals Determination of the Sensitivity and Thixotropic Effects of Clay Soil for Selected Sites in Diwaniya City - Iraq

2020 ◽  
Vol 55 (2) ◽  
Author(s):  
Abdul-Kareem H. Al-Rubaiee ◽  
Rand S. Al Salami
Keyword(s):  
Clay Soil ◽  
Experimental Tests ◽  
Test Methods ◽  
Ratio Test ◽  
Strength Ratio ◽  
Special Test ◽  
Liquidity Index ◽  
Low Sensitivity

This paper is conducted to determine the sensitivity and thixotropic effects of clay soil for selected sites in Diwaniya city which are: (Dawr Aldubbat, Al-Zawra square, 14 Ramadan square, Al'iiskan Alaqadim and Military square). The main aim of this investigation is to study the sensitivity and thixotropy of clay soil, and determination and classification of soils to (Insensitive), (slightly to very sensitive) and (slightly to extra quick)) relying on special test methods in sensitivity and thixotropic phenomena. The experimental tests that were done including geotechnical, chemical and mineralogical tests to natural soils and special tests were for the identification and classification of sensitivity of soils. The results of sensitivity of soils test displayed low to medium for all the types of the soils in the study area. The results of the thixotropic strength ratio test showed a small increase in thixotropic strength ratio values with time. The results of Atterberg limits test indicated that increasing the proportion of the clay causes an increase in the plasticity index of the soil. While the results of the liquidity index varied from 0.24 to 0.70, which reflects the low sensitivity of the clay soil in the study area.

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