Improvement of Volume Change Characteristics of Saline Clayey Soils

2010 ◽  
Vol 11 (1) ◽  
pp. 76-85 ◽  
Author(s):  
R. Ziaie Moay ◽  
M. Haratian ◽  
E. Izadi
Keyword(s):  
Volume Change ◽  
Clayey Soils ◽  
Change Characteristics

scholarly journals Strength and Volume Change Characteristics of Clayey Soils: Performance Evaluation of Enzymes

Minerals ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 52
Author(s):  
Tanveer Ahmed Khan ◽  
Mohd Raihan Taha ◽  
Mudasser Muneer Khan ◽  
Syyed Adnan Raheel Shah ◽  
Muhammad Asif Aslam ◽  
...  
Keyword(s):  
Volume Change ◽  
Unconfined Compressive Strength ◽  
Optimum Moisture Content ◽  
Soil Samples ◽  
Residual Soil ◽  
Clayey Soils ◽  
X Ray Diffraction ◽  
Treated Soil ◽  
X Ray ◽  
Change Characteristics

This study was conducted to evaluate the strength and volume change characteristics of a sedimentary residual soil mixed with bentonite (S1) when treated with three different enzymes. In addition, three reference clays including bentonite, illite, and kaolinite were also treated with enzymes to study the effect on their strength characteristics. Soil samples prepared at the optimum moisture content (OMC) were sealed and cured for four months. After curing, reference clays were tested for unconfined compressive strength (UCS). For swell tests, the S1 soil samples were placed on porous stones, which were immersed in water to allow capillary soaking of the samples. S1 samples were allowed to dry at ambient temperature for shrinkage test until the rate of reduction in volume became negligible. On completion of swell tests, the samples were tested for UCS to determine the decrease in strength due to saturation. No increase in strength and decrease in volume change were observed for any of the enzymes and dosages. Field Emission Scanning Electron Microscope (FESEM) showed some dense packing of particles for treated samples, whereas X-ray diffraction (XRD) did not reveal any change; in fact, the pattern for untreated and treated soil samples were indistinguishable.

Stress-Strain and Volume Change Characteristics of an Assemblage of Polymer Pellets

1998 ◽  
Vol 13 (4) ◽  
pp. 347-357 ◽  
Author(s):  
D. Penumadu ◽  
J. A. Yamamuro ◽  
A. E. Abrantes ◽  
G. A. Campbell
Keyword(s):  
Volume Change ◽  
Stress Strain ◽  
Change Characteristics

A Diffused Air Volume Indicator for Unsaturated Soils

1975 ◽  
Vol 12 (4) ◽  
pp. 533-539 ◽  
Author(s):  
D. G. Fredlund
Keyword(s):  
Correction Factor ◽  
Volume Change ◽  
Unsaturated Soils ◽  
Effective Means ◽  
Computational Procedure ◽  
Technical Note ◽  
Water Volume ◽  
Volume Weight ◽  
Air Volume ◽  
Change Characteristics

The diffusion of air through saturated high air entry discs presents a serious problem in the testing of unsaturated soils. When determining either the strength (drained) or volume change characteristics of unsaturated soils, a technique must be available to measure the amount of diffused air in order for the appropriate corrections to be applied to the volume–weight relationships.The described diffused air volume indicator is a simple but effective means of measuring the quantity of diffused air. This technical note explains its construction and procedure of operation. Also outlined is the computational procedure for the correction factor that must be applied to the water volume change measurements. Numerous tests on the indicator show a reliability in the order of ±0.2 cc over a period of 2.5 weeks.

Ko-Volume Change Characteristics of an Unsaturated Soil with Respect to Various Loading Paths

2003 ◽  
Vol 26 (1) ◽  
pp. 10434 ◽  
Author(s):  
L David Suits ◽  
TC Sheahan ◽  
H Rahardjo ◽  
DG Fredlund
Keyword(s):  
Volume Change ◽  
Unsaturated Soil ◽  
Loading Paths ◽  
Change Characteristics

scholarly journals One-Dimensional Volume Change Characteristics of Sands Under Very Low Confining Stresses

1975 ◽  
Vol 15 (3) ◽  
pp. 51-60 ◽  
Author(s):  
Yoshiaki Yoshimi ◽  
Fumio Kuwabara ◽  
Kohji Tokimatsu
Keyword(s):  
Volume Change ◽  
One Dimensional ◽  
Change Characteristics
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