Modeling of Suffusion Considering the Influence of Soil Gradation

2021 ◽  
Vol 136 (3) ◽  
pp. 765-790
Author(s):  
Jinfeng Bi ◽  
Xianqi Luo ◽  
Hui Shen
Keyword(s):  
Soil Gradation

scholarly journals Utilizing Hyperspectral Remote Sensing for Soil Gradation

2020 ◽  
Vol 12 (20) ◽  
pp. 3312
Author(s):  
Jordan Ewing ◽  
Thomas Oommen ◽  
Paramsothy Jayakumar ◽  
Russell Alger
Keyword(s):  
Remote Sensing ◽  
Fine Particles ◽  
Soil Mechanics ◽  
Hyperspectral Remote Sensing ◽  
Hyperspectral Data ◽  
Controlled Environment ◽  
Sieve Analysis ◽  
Field Sample ◽  
Specific Objective ◽  
Soil Gradation

Soil gradation is an important characteristic for soil mechanics. Traditionally soil gradation is performed by sieve analysis using a sample from the field. In this research, we are interested in the application of hyperspectral remote sensing to characterize soil gradation. The specific objective of this work is to explore the application of hyperspectral remote sensing to be used as an alternative to traditional soil gradation estimation. The advantage of such an approach is that it would provide the soil gradation without having to obtain a field sample. This work will examine five different soil types from the Keweenaw Research Center within a laboratory-controlled environment for testing. Our study demonstrates a correlation between hyperspectral data, the percent gravel and sand composition of the soil. Using this correlation, one can predict the percent gravel and sand within a soil and, in turn, calculate the remaining percent of fine particles. This information can be vital to help identify the soil type, soil strength, permeability/hydraulic conductivity, and other properties that are correlated to the gradation of the soil.

scholarly journals The influence of particle breakage on stress-dilatancy relationship for granular soils

2019 ◽  
Vol 92 ◽  
pp. 09004 ◽  
Author(s):  
Zenon Szypcio
Keyword(s):  
Internal Energy ◽  
Stress Level ◽  
Triaxial Compression ◽  
Volumetric Strain ◽  
Stress Path ◽  
State Theory ◽  
Particle Breakage ◽  
Compression Tests ◽  
Particle Crushing ◽  
Soil Gradation

The influence of particle breakage on soil behaviour is important from theoretical and practical perspectives. Particle breakage changes the internal energy in two ways. First, internal energy is consumed for particle crushing and second, the internal energy changes because of additional volumetric strain caused by particle crushing. These two effects may be quantified by use of Frictional State Theory. The analysed drained triaxial compression tests of Toyoura sand, gravel and Dog's Bay sand at different stress level and stress path revealed that the effect of particle breakage is a function of soil gradation, strength of soil grains, stress level and stress path.

scholarly journals Perbaikan Subgrade pada Jalan Kampung Keramat di Kota Pangkalpinang dengan Menggunakan Kapur Padam Sebagai Bahan Stabilisasi Tanah

2020 ◽  
Vol 17 (1) ◽  
pp. 22-30
Author(s):  
Ferra Fahriani ◽  
Desy Yovianti ◽  
Eko Saputra ◽  
Merley Misriani
Keyword(s):  
Specific Gravity ◽  
Soil Stabilization ◽  
Clay Soil ◽  
Liquid Limit ◽  
Soil Conditions ◽  
Atterberg Limit ◽  
Limit Values ◽  
The Road ◽  
On The Road ◽  
Soil Gradation

Soil is the main support in a construction. Unstable soil conditions, especially in the subgrade can cause damage to the road. Based on the results of a direct survey in the field, it was found that the condition of the Jalan Kampung Keramat in Pangkalpinang City was damaged. This might be caused by the condition of the subgrade on the road which is unstable and the subgrade is categorised as clay soil type. This study aims to improve the subgrade on Jalan Kampung Keramat in Pangkalpinang City by using limestone as a soil stabilization material. This study used an experimental method in the laboratory by making mixture between clay soil and limestone with four different variations in the percentage of limestone, namely 0%, 3%, 5%, 7%. There are four parameters of the mixed characteristics that are tested and analysed, namely: the Atterberg limit, specific gravity, soil gradation and CBR value. The results show that the Atterberg limit values ​​(liquid limit-LL and plasticity index-IP) and specific gravity tend to decrease with increasing percentage of limestone extinguished. However, the plastic limit value (PL) shows the opposite tendency, i.e. it increases with the decreasing percentage of limestone. The specific gravity values ​​obtained based on the percentage of lime outages (0%, 3%, 5%, 7%) are 2.63, 2.61, 2.60, and 2.58, respectively. In addition, the addition of limestone causes changes in soil gradation, namely the addition of retained fraction # No.200 and the reduction of passed fraction # No.200. The Addition of limestone can increase the CBR value of the soil, where the addition of 7% of limestone produces the highest CBR value (21.3%) compared to 5% limestone (15.7%), 3% limestone (13.4%) and 0% limestone (11.2%). Therefore, using limestone can improve quality of subgrade, which can be seen from the value of CBR obtained.  

scholarly journals The water resistance of a recycled base with foamed bitumen in the aspect of road binder composition

2016 ◽  
Vol 15 (1) ◽  
pp. 019-029
Author(s):  
Przemysław Buczyński ◽  
Marek Iwański ◽  
Grzegorz Mazurek
Keyword(s):  
Water Resistance ◽  
Tensile Modulus ◽  
Local Conditions ◽  
Reclaimed Asphalt ◽  
Precise Adjustment ◽  
Mineral Components ◽  
Indirect Tensile ◽  
Binder Composition ◽  
Foamed Bitumen ◽  
Soil Gradation

The paper describes research results of recycled base which was performedin a cold deep recycling technology with foamed bitumen and different type of hydraulicmixed binder in the aspect of water resistance. An individual design of a composition of abinder enables to achieve a precise adjustment of a binder’s impact to local conditions andrequired parameters of a recycled base. The design a recycled base with foamed bitumensimulated a cold deep recycling process with materials from existing crushed bituminouspavement layers ("technology in-situ"). To produce the foamed bitumen a road bitumen ofpenetration grade 50/70 was used. Moreover, the following mineral components werecategorised as a waste material: reclaimed asphalt pavement, 0/31,5 mm aggregate andaggregates for soil gradation improvement 0/4. A composition of the recycled base consisted of the binders prepared in the laboratory as a result of a mix of three basic components.The percentage of individual road binders was determined in line with the plan of thesimlex-centroid experiment. For the purpose of determining an influence of such a hydraulicroad binder on the water resistance in recycled base, the following tests were carried out:void contents Vm, tensile strength ratio TSR (water resistance). Additionally, an evaluationof increase of indirect tensile modulus (IT-CY) was conducted. On the basis of the testresults, a varied impacts of tested hydraulic road binders on mechanical properties andwater resistence of recycled base with foamed bitumen were observed. On the basis of theplan of the experiment, it was possible to determine the recommended road binder composition that enabled to obtain the water resistance in the recycled base with foamed bitumen

A Centrifuge Study on the Effects of Soil Gradation on CPT Tip Resistance

2019 ◽  
Author(s):  
Alexander P. Sturm ◽  
Gregory M. Shepard ◽  
Jason T. DeJong ◽  
Dan W. Wilson
Keyword(s):  
Tip Resistance ◽  
Soil Gradation

Improved prediction of water retention characteristic based on soil gradation and clay fraction

Geoderma ◽  
2021 ◽  
Vol 404 ◽  
pp. 115293
Author(s):  
Chong Wang ◽  
Shuang-yang Li ◽  
Xiao-jia He ◽  
Qian Chen ◽  
Hao Zhang ◽  
...  
Keyword(s):  
Water Retention ◽  
Clay Fraction ◽  
Retention Characteristic ◽  
Soil Gradation

scholarly journals Monitoring Leachate Migration in Compacted Soil Using Digital Image Technique

2019 ◽  
Vol 9 (1) ◽  
pp. 3685-3691
Author(s):  
Y. B. Yamusa ◽  
R. Sa’ari ◽  
K. Ahmad ◽  
N. Alias ◽  
M. Mustaffar ◽  
...  
Keyword(s):  
Hydraulic Conductivity ◽  
Digital Image ◽  
Time Duration ◽  
Compacted Soils ◽  
Fines Content ◽  
Saturation Intensity ◽  
Application Systems ◽  
Contour Plots ◽  
Image Technique ◽  
Soil Gradation

As leachate has been a source of groundwater contamination worldwide, this paper examines the phenomenon of leachate migration on different gradations of compacted laterite soil used as sanitary landfill liners. Three different soil gradations (30%, 40% and 50% with respect to fines content) used in this study were compacted in circular acrylic columns to provide a clear visualization of leachate migration into the soils. Digital image technique was used in capturing photos at successive time intervals to monitor the leachate migration. The captured digital images were fed into Matlab and converted into hue-saturation-intensity (HSI) format. Surfer software then read the HSI and generated 2D contour plots. The results of the experiments showed that the leachate moves downward faster in the soil gradation with the least fines content. Hydraulic conductivity values decrease with increase in time duration and equally with increase in fines content. The hydraulic conductivities of the leachate for 30%, 40% and 50% fines were 3.64×10-9m/s, 2.40×10-9m/s, and 1.24×10-9m/s respectively. This reveals that for tropical laterite soils, gradation containing 50% fines content provides better hydraulic conductivity. The use of noninvasive digital image technique can enable designers/engineers to monitor and visualize the leachate migration in compacted soils in waste containment application systems.

Rapid Detection Method of Dr Value of Large Particle Size Filter Materials in Earth Rock-Filling Dam of NuoZhadu

2011 ◽  
Vol 368-373 ◽  
pp. 2309-2313
Author(s):  
Jian Feng Li ◽  
Yun Xian Zhou ◽  
Zhan Jin Ning ◽  
Qi Qin Zhu
Keyword(s):  
Particle Size ◽  
Rapid Detection ◽  
Large Particle ◽  
Detection Method ◽  
Filter Material ◽  
Dry Density ◽  
Large Particle Size ◽  
Filter Materials ◽  
Grade Material ◽  
Soil Gradation

On construction quality detection in high earth rock-filling dam, it is difficulty for testing the relative density Dr Value of large particle size filter materials. In this paper, we have effectively controlled the filling quality of filter material II in Nuozhadu core dam, and at the same time, explored and applied the rapid detection method of Dr Value of filter material II. Then studied the relationship between maximum, minimum dry density of the different grade material in the case of same compacted function and soil gradation parameters, and put forward a method of maximum and minimum dry density associated with particle composition, fitting relation curve between dry density and particle content less than 5mm(S5). By detecting the content of S5, it can be directly reached maximum and minimum dry density, and then calculate the Dr Value.

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