Correlations between Compression Index and Index Properties of Undisturbed and Disturbed Tehran clay

2021 ◽  
Author(s):  
Davood Akbarimehr ◽  
Abolfazl Eslami ◽  
Reza Imam
Keyword(s):  
Index Properties ◽  
Compression Index

scholarly journals Prediction of Consolidation Characteristics from Index Properties

2018 ◽  
Vol 65 ◽  
pp. 06004
Author(s):  
Kok Shien Ng ◽  
Yee Ming Chew ◽  
Nur Izzati Ahmad Lazim
Keyword(s):  
Regression Analysis ◽  
Cohesive Soil ◽  
Liquid Limit ◽  
Index Properties ◽  
Compression Index ◽  
Plastic Limit ◽  
Considerable Time ◽  
Coefficient Of Consolidation ◽  
Good Relationship ◽  
Two Parameters

Compression index and coefficient of consolidation are two most important parameters in obtaining the consolidation characteristics of cohesive soil. Considerable time and effort are required to obtain these parameters from the oedometer test. Therefore, this study aims to correlate these two parameters with the index properties. Five remoulded samples are tested for their physical properties as well as their consolidation characteristics. The results show good relationship was obtained for the liquid limit and the compression index while the coefficient of consolidation is best correlated with the plastic limit. Multiple regression analysis was performed to improve the prediction. Liquid limit is best coupled with specific gravity to estimate the compression index while plastic limit and plastic index can be used to best predict the coefficient of consolidation.

Compression characteristics and index properties of tills and intertill clays in southern Saskatchewan, Canada

1993 ◽  
Vol 30 (2) ◽  
pp. 257-275 ◽  
Author(s):  
E. Karl Sauer ◽  
Anne K. Egeland ◽  
E. A. Christiansen
Keyword(s):  
Bearing Capacity ◽  
Key Words ◽  
Atterberg Limits ◽  
Degree Of Saturation ◽  
Dry Density ◽  
Index Properties ◽  
Compression Index ◽  
Predictable Pattern ◽  
Compression Characteristics

Compression characteristics and index properties of unweathered tills and clays from repeated glaciations follow a predictable pattern at 10 sites along a 1300-km transect across southern Saskatchewan. A surface ablation melt-out till of the Battleford Formation is normally consolidated, a basal melt-out till of the Battleford Formation is moderately overconsolidated (σp′ = 400–750 kPa), and the older (pre-Battleford) tills and intertill clays are heavily overconsolidated (1800 ± 200 kPa). Variation in lithology, as indicated by Atterberg limits, is small within formations which reflected in the compression index. The older tills of the Sutherland Group are highly plastic compared with the younger tills of the Saskatoon Group. The in situ dry density of the youngest (Battleford) till is slightly above 100% maximum Proctor density. The in situ dry density of the older (pre-Battleford) tills is at or above the 100% maximum modified Proctor density. At these high densities the in situ degree of saturation is 94.5 ± 4.8%; as compared with Proctor optimums at 80.3 ± 3.8%. It is not practical to increase bearing capacity of the tills by compaction. Disturbance by compaction equipment could cause a decrease in density. Key words : preconsolidation, tills, intertill clays, Proctor density, multiple glaciations.

Statistical forecasting of compressibility of peaty ground

1977 ◽  
Vol 14 (4) ◽  
pp. 562-570 ◽  
Author(s):  
Keiji Kogure ◽  
Yoshinori Ohira
Keyword(s):  
Linear Regression ◽  
Void Ratio ◽  
Statistical Techniques ◽  
Regression Equations ◽  
Index Properties ◽  
Compression Index ◽  
Simple Linear Regression ◽  
Undisturbed Samples ◽  
Natural Water Content ◽  
Statistical Relationships

Statistical techniques are used to forecast the compressibility of peaty ground. Based on data from more than 100 consolidation tests on undisturbed samples of peat and underlying clay, various regression equations are developed to estimate the compression index, in terms of more easily determined soil index properties. It is found that the compression index can be reasonably well approximated by the use of a simple linear regression model involving the natural water content and the natural void ratio. These regression equations are then compared with those that have been reported by other investigators. These regression equations may permit a preliminary estimation of the settlement of peaty ground. The obtained statistical relationships apply to the peaty ground in the Ishikari area, Hokkaido, Japan, and it should be emphasized that such relationships are approximate and caution should be used in their application.

Predicting the Compression Index of Saturated Reconstituted Contaminated Clays Using Index Properties

2021 ◽  
Author(s):  
Ridong Fan ◽  
Jiaping Liu ◽  
Songyu Liu ◽  
Yanjun Du ◽  
Martin Liu ◽  
...  
Keyword(s):  
Index Properties ◽  
Compression Index

The relationship between geotechnical index properties and the pore-size distribution of compacted clayey silts

2015 ◽  
Vol 22 (6) ◽  
Author(s):  
Nazile Ural
Keyword(s):  
Specific Surface ◽  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
Surface Area ◽  
Specific Surface Area ◽  
Pore Volume ◽  
Correlation Coefficients ◽  
Liquid Limit ◽  
Index Properties

AbstractIn this study, the relationships between geotechnical index properties and the pore-size distribution of compacted natural silt and artificial soil mixtures, namely, silt with two different clays and three different clay percentages (10%, 20%, and 40%), were examined and compared. Atterberg’s limit tests, standard compaction tests, mercury intrusion porosimetry, X-ray diffraction, scanning electron microscopy (SEM) analysis, and Brunauer-Emmett-Teller specific surface analysis were conducted. The results show that the liquid limit, the cumulative pore volume, and specific surface area of artificially mixed soils increase with an increase in the percentage of clay. The cumulative pore volume and specific surface area with geotechnical index properties were compared. High correlation coefficients were observed between the specific areas and both the liquid limit and the plasticity index, as well as between the cumulative pore volume and both the clay percentage and the

Physicochemical and index properties of loess stabilized with lime and fly ash piles

2015 ◽  
Vol 114 ◽  
pp. 77-84 ◽  
Author(s):  
Xiangjun Pei ◽  
Fanyu Zhang ◽  
Wanjiong Wu ◽  
Shouyun Liang
Keyword(s):  
Fly Ash ◽  
Index Properties
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