scholarly journals Semi-automatic apparatus of the permeability coefficient for cutoff walls in expansive soil areas

2021 ◽  
Vol 2006 (1) ◽  
pp. 012019
Author(s):  
Min Zhang ◽  
Xizhong Shen ◽  
Yan Lan ◽  
Chenghui Dong
Keyword(s):  
Permeability Coefficient ◽  
Expansive Soil ◽  
Automatic Apparatus ◽  
Cutoff Walls

scholarly journals Application of a Bentonite Slurry Modified by Polyvinyl Alcohol in the Cutoff of a Landfill

2020 ◽  
Vol 2020 ◽  
pp. 1-9 ◽  
Author(s):  
Guozhong Dai ◽  
Yanmin Sheng ◽  
Yutao Pan ◽  
Guicai Shi ◽  
Shujin Li
Keyword(s):  
Polyvinyl Alcohol ◽  
Adsorption Capacity ◽  
Permeability Coefficient ◽  
Cutoff Wall ◽  
Treatment Results ◽  
Bentonite Slurry ◽  
Cutoff Walls ◽  
Adsorption Capability

Soil-bentonite cutoff walls are usually used to contain the contaminants of landfills. The pumpability, permeability, and adsorption capability of the slurry are all crucial to the performance of the cutoff wall. In this study, the effect of polyvinyl alcohol (PVA) was used to improve the performance of bentonite slurry. A series of lab tests were conducted to evaluate the pumpability, permeability, and adsorption capacity with different concentrations of PVA treatment. Results show that the addition of PVA can increase the fluidity and pumpable period of slurry, which facilitates the casting and grouting during construction. The addition of PVA also helps to reduce the permeability coefficient of slurry and improve the adsorption capability which enhances the cutoff performance of the walls.

Improving Properties of Expansive Soil Using Cement, Quick Lime and Cement-Lime Blend

2019 ◽  
Vol 10 (2) ◽  
pp. 94 ◽  
Author(s):  
Abdulla A. Sharo ◽  
Yusuf A. Alhowaidi ◽  
Mohammad S. Al-Tawaha
Keyword(s):  
Expansive Soil ◽  
Quick Lime

EFFECT OF FLY ASH AND LIME ON STABILIZATION OF EXPANSIVE SOIL

2016 ◽  
Vol 6 (2) ◽  
pp. 8
Author(s):  
DAHALE P.P. ◽  
NAGARNAIK P. B. ◽  
GAJBHIYE A.Y ◽  
◽  
◽  
...  
Keyword(s):  
Fly Ash ◽  
Expansive Soil

EXPANSIVE SOIL: CAUSES AND TREATMENTS

2016 ◽  
Vol 6 (3) ◽  
pp. 1 ◽  
Author(s):  
KHADEMI FAEZEHOSSADAT ◽  
BUDIMAN JEFF ◽  
◽  
Keyword(s):  
Expansive Soil

An Overview: to Reduce Swelling Potential of Expansive Soil By Using Polypropylene Material

2018 ◽  
pp. 129-131
Author(s):  
A. A. Musale ◽  
M. A. Mhetre ◽  
A. I. Mukeri ◽  
K. S. Chavan ◽  
R. N. Kawade ◽  
...  
Keyword(s):  
Expansive Soil ◽  
Swelling Potential ◽  
Polypropylene Material

Groundwater flow simulation and its application in GaoSong ore field, China

2018 ◽  
Vol 10 (2) ◽  
pp. 276-284 ◽  
Author(s):  
Gang Chen ◽  
Shiguang Xu ◽  
Chunxue Liu ◽  
Lei Lu ◽  
Liang Guo
Keyword(s):  
Numerical Model ◽  
Flow Field ◽  
Groundwater Flow ◽  
Mine Water ◽  
Permeability Coefficient ◽  
Water Inrush ◽  
Seepage Field ◽  
Groundwater Seepage ◽  
Calculation Results ◽  
Groundwater Flow Field

Abstract Mine water inrush is one of the important factors threatening safe production in mines. The accurate understanding of the mine groundwater flow field can effectively reduce the hazards of mine water inrush. Numerical simulation is an important method to study the groundwater flow field. This paper numerically simulates the groundwater seepage field in the GaoSong ore field. In order to ensure the accuracy of the numerical model, the research team completed 3,724 field fissure measurements in the study area. The fracture measurement results were analyzed using the GEOFRAC method and the whole-area fracture network data were generated. On this basis, the rock mass permeability coefficient tensor of the aquifer in the study area was calculated. The tensor calculation results are used in the numerical model of groundwater flow. After calculation, the obtained numerical model can better represent the groundwater seepage field in the study area. In addition, we designed three different numerical models for calculation, mainly to explore the influence of the tensor assignment of permeability coefficient on the calculation results of water yield of the mine. The results showed that irrational fathom tensor assignment would cause a significant deviation in calculation results.

Permeability to albumin in isolated coronary venules

1993 ◽  
Vol 265 (2) ◽  
pp. H543-H552 ◽  
Author(s):  
Y. Yuan ◽  
W. M. Chilian ◽  
H. J. Granger ◽  
D. C. Zawieja
Keyword(s):  
Permeability Coefficient ◽  
Filtration Rate ◽  
Intraluminal Pressure ◽  
Apparent Permeability ◽  
Filtration Pressure ◽  
Diffusive Permeability ◽  
Apparent Permeability Coefficient ◽  
Chemical Conditions ◽  
Physical And Chemical ◽  
Intravascular Pressure

This study reports measurements of albumin permeability in isolated coronary venules. The isolated microvessel technique allows the quantification of transmural exchange of macromolecules under tightly controlled physical and chemical conditions. Transvenular exchange of albumin was studied in isolated coronary venules during alterations in filtration rate caused by changes in intravascular pressure. The apparent permeability coefficient of albumin (Pa) at an intraluminal pressure of 11 cmH2O was 3.92 +/- 0.43 x 10(-6) cm/s. Elevating intraluminal pressure to 16 and 21 cmH2O increased Pa to 5.13 +/- 0.57 x 10(-6) and 6.78 +/- 0.66 x 10(-6) cm/s, respectively. Calculation of the true diffusive permeability coefficient of albumin (Pd) at zero filtration rate was 1.54 x 10(-6) cm/s. The product of hydraulic conductance (Lp) and (1 - sigma), where sigma is the solute reflection coefficient, was 3.25 x 10(-7) cm.s-1 x cmH2O-1. At a net filtration pressure of 4-5 cmH2O, diffusion accounts for > 60% of total albumin transport across the venular wall. Transmural albumin flux is very sensitive to filtration rate, rising 6.7% for each cmH2O elevation of net filtration pressure. At 11 cmH2O net filtration pressure, convection accounts for nearly 70% of net albumin extravasation from the venular lumen. We suggest that the isolated coronary venule is a suitable preparation for the study of solute exchange in the heart.

Effect of Adding Zeolitic Tuff on Geotechnical Properties of Lime-Stabilized Expansive Soil

2021 ◽  
Author(s):  
Samer R. Rabab’ah ◽  
Madhar M. Taamneh ◽  
Hussein M. Abdallah ◽  
Osama K. Nusier ◽  
Laith Ibdah
Keyword(s):  
Expansive Soil ◽  
Geotechnical Properties ◽  
Zeolitic Tuff
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