Sieving or screen analysis is a common technique used to separate particles by size. It involves shaking a sample through a series of sieves with decreasing mesh sizes to separate particles. This document describes conducting a sieve analysis experiment on calcium carbonate over different time intervals. The results show that longer sieving times of 6 minutes produced the best separation of particles into different size fractions compared to 2 and 4 minute intervals. Sieve analysis provides useful information about particle size distribution that is important for understanding properties and performance.
Astm designation c 136 for fine aggregatesMuhammad Ahmad
Sieve Analysis for Fine Aggregate as per ASTM. Slides contain all the relevant data and steps that would be required for the performance of sieve analysis of fine aggregates.
Astm designation c 136 for fine aggregatesMuhammad Ahmad
Sieve Analysis for Fine Aggregate as per ASTM. Slides contain all the relevant data and steps that would be required for the performance of sieve analysis of fine aggregates.
Determination of strength and stress-strain relationships of a cylindrical specimen of reconstituted specimen using Consolidated Drained (CD) Triaxial Test.
1. A series of drained triaxial tests under four different initial states were conducted on Yamuna River sand. The results consist of simple stress-strain relation, change in volume behaviour were plotted.
2. Basic stress-strain relation with volume behaviour was presented in plot. The results for densely prepared sand samples show an expected behaviour. There is a significant difference in peak and residual deviatoric stress (q) as can be depicted form the plot.
3. With increase in confining stress, load carrying capacity of specimen increases.
4. Saturation value ‘B’ must be acquired to be more than 0.95 before starting the isotropic consolidation phase in CD test.
5. CD tests are performed at much slower strain rate as compared to CU tests for the same soil. The strain rate for CD test can be chosen approx. 8-10 times lower than the CU test.
6. It is important to have no pore water pressure generation throughout the shearing phase of CD test or in other words strain rate must be so small that pore water pressure must get dissipated quickly when specimen is subjected to compression loading in CD test.
7. In CD test, volumetric strain versus axial strain relationship shows contractive response for NC soils and dilative response for OC soils. (NC = Normally consolidated, OC = Over consolidated)
References:
1. IS: 2720 (Part 11):1993- Determination of the shear strength parameters of a specimen tested in unconsolidated undrained triaxial compression without the measurement of pore water pressure (first revision). Reaffirmed- Dec 2016.
2. IS: 2720 (Part 12):1981- Determination of Shear Strength parameters of Soil from consolidated undrained triaxial compression test with measurement of pore water pressure (first revision). Reaffirmed- Dec 2016.
3. ASTM D7181-11. Method for Consolidated Drained Triaxial Compression Test for Soils; ASTM: West Conshohocken, PA, USA, 2011.
As a project in undergraduate college, we decided to explore soil and ways to reinforce using plastic fibers. Our study included Geo synthetic meshes as well as chemical stabilizers. Our scope of study study was finalized to be Waste Plastic Fiber Reinforced soil, as plastic was being used experimentally in small projects while waste plastic is easily available.
Determination of strength and stress-strain relationships of a cylindrical specimen of reconstituted specimen using Consolidated Drained (CD) Triaxial Test.
1. A series of drained triaxial tests under four different initial states were conducted on Yamuna River sand. The results consist of simple stress-strain relation, change in volume behaviour were plotted.
2. Basic stress-strain relation with volume behaviour was presented in plot. The results for densely prepared sand samples show an expected behaviour. There is a significant difference in peak and residual deviatoric stress (q) as can be depicted form the plot.
3. With increase in confining stress, load carrying capacity of specimen increases.
4. Saturation value ‘B’ must be acquired to be more than 0.95 before starting the isotropic consolidation phase in CD test.
5. CD tests are performed at much slower strain rate as compared to CU tests for the same soil. The strain rate for CD test can be chosen approx. 8-10 times lower than the CU test.
6. It is important to have no pore water pressure generation throughout the shearing phase of CD test or in other words strain rate must be so small that pore water pressure must get dissipated quickly when specimen is subjected to compression loading in CD test.
7. In CD test, volumetric strain versus axial strain relationship shows contractive response for NC soils and dilative response for OC soils. (NC = Normally consolidated, OC = Over consolidated)
References:
1. IS: 2720 (Part 11):1993- Determination of the shear strength parameters of a specimen tested in unconsolidated undrained triaxial compression without the measurement of pore water pressure (first revision). Reaffirmed- Dec 2016.
2. IS: 2720 (Part 12):1981- Determination of Shear Strength parameters of Soil from consolidated undrained triaxial compression test with measurement of pore water pressure (first revision). Reaffirmed- Dec 2016.
3. ASTM D7181-11. Method for Consolidated Drained Triaxial Compression Test for Soils; ASTM: West Conshohocken, PA, USA, 2011.
As a project in undergraduate college, we decided to explore soil and ways to reinforce using plastic fibers. Our study included Geo synthetic meshes as well as chemical stabilizers. Our scope of study study was finalized to be Waste Plastic Fiber Reinforced soil, as plastic was being used experimentally in small projects while waste plastic is easily available.
a complete description of the particle size distribution of particles in different categories. Sedimentation is a phenomenon that completely work with the size of particles.
Micromeritics ,1. Micromeritics: Importance of particle size determination, different means of expressing particle size, methods of particle size determination: Optical and electron microscope studies, Coulter counter methods, laser beam technique, sieve analysis, sedimentation methods; particle shape and surface area. Measurement of particle surface area.
Effect of count and stitch length on spirality of single jersey knit fabriceSAT Journals
Abstract
The following paper focuses on change in spirality due to stitch length and count variation .This work was carried out with 12 samples of single jersey knit fabrics which were scoured and bleached with NaOH and H2O2 (35% strength), dyed with reactive dye (Remazol Yellow RR reactive class) and were finished as standard procedure . After finishing the samples were tested for spirality and compared between different stitch length and count. The result obtained in this research indicated that spirality increases strongly due to increase of stitch length when count of yarn is fixed and on fixed stitch length spirality increases with the increment of count.
Keywords: Spirality, Count, Stitch length.
Rapid Fabrication of Nylon Surgical Sutures by 3D Printingjournal ijrtem
Abstract : Non-absorbable sutures such as monofilament nylon sutures are widely used in surgical treatments. These monofilament nylon sutures are fabricated by complicated extrusion process. In this study, a 3D printer is used for the first time to produce monofilament nylon suture, which could be used for eyes surgeries and others applications. Sutures fabricated in this study have diameter various from 60 to 100 μm, with capability of holding up to 4N load, which is comparable to the ones manufactured from conventional monofilament extrusion process. Keywords: 3D printing, monofilament suture, rapid prototyping
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Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Event Management System Vb Net Project Report.pdfKamal Acharya
In present era, the scopes of information technology growing with a very fast .We do not see any are untouched from this industry. The scope of information technology has become wider includes: Business and industry. Household Business, Communication, Education, Entertainment, Science, Medicine, Engineering, Distance Learning, Weather Forecasting. Carrier Searching and so on.
My project named “Event Management System” is software that store and maintained all events coordinated in college. It also helpful to print related reports. My project will help to record the events coordinated by faculties with their Name, Event subject, date & details in an efficient & effective ways.
In my system we have to make a system by which a user can record all events coordinated by a particular faculty. In our proposed system some more featured are added which differs it from the existing system such as security.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
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Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
1. 1
1. INTRODUCTION
Sieving or screen analysis is the oldest and most commonly used process for solid - solid
separation and it use in the analysis of the differences between the fine particles and coarse
particles. Thus, putting it in simple words, sieving is a simple and convenient technique of
separating particles of different sizes. It is commonly analyze using to methods, namely the
differential distribution and the cumulative distribution. By the analysis, one can identify the
particle population and determine average particle sizes of the sample particle.
Experiments in sieving is crucial to conduct sieve analysis of a product or a sample. This is
used to know some properties that might be involved in production. Examples of these
properties are rate of reactions, potential to dissolve, packing density, etc. Also, this prevents
bulking or aggregation of particles into unwanted larger sizes. Some common industrial use of
sieving is in construction and cement industries. General use of this method is common to all
production involving particulate matters in their process. Manufacturers can know their
products and find ways to develop some of its properties such as texture and appearance.
2. 2
2. REVIEW OF RELATED LITERATURE
A sieve analysis also known as gradation test procedure used to assess and determine
the particle size distribution of a particulate material by allowing the material to pass through
a series of sieves of progressively smaller mesh size. This is done by weighing the amount of
material that is retained by each sieve as a fraction of the whole mass.
The size distribution is often of crucial importance to the way the material performs in
use. A sieve analysis can be performed on any type of non-organic or organic granular
materials. Being such a simple technique of particle sizing, it is probably the most common.[1]
Sieves are equipment or device for separating wanted elements from unwanted element
or for characterizing the particle size distribution of a sample, usually using a woven screen
such as a mesh or net or metal. Terms linked to sieves or screen are mesh number, sieve
diameter and sieve aperture. Mesh size is the mesh number (a US measurement standard) and
its relationship to the size of the openings in the mesh and thus the size of particles that can
pass through these openings. Figuring out the mesh number is simple. It is defined as the
number of the wire strands (of same diameter) per inch weaved to square mesh pattern, sieve
diameter is defined as the width of the minimum square aperture through which the particle
will pass. A 100-mesh screen has 100 openings per inch, and so on. Thus, a higher mesh
number indicated a finer diameter of sieve. Sieve apertures or also known as screen openings
are the openings, gaps or holes in the sieves.
Particle size distribution of granular material or particles dispersed in fluid is a list of
values or a mathematical function that describes the relative amount, usually by mass, of
particles present according to size. This is very crucial since it estimates the population of
particles in a given dimension. Particle size is a property that is very important and critical to
industrial production or use of the material. Particle size affects many properties of granular
3. 3
materials, such properties are: stability of suspension, texture, rate of dissolution, packed
density, efficacy of delivery, flowability and handling, appearance, porosity and viscosity.
Units used for particle size depend of the size of particles, for coarse particles in inches or
millimeters, for fine particles the screen/sieve size, for very fine particles in micrometers or
nanometers and for ultra-fine particles the surface per unit mass (m2/g).
Differential or Distinctive particle size distribution is the percentage of particles from
the total that is within an instance size range. Differential screen analysis a type of sieve
analysis used to determine differential particle size distribution, sieve results are obtained in
differential weight/ mass percent retained on each sieve or the individual sieve weight/ mass
percent retained in each sieve.
Average Particle diameter = Screen opening of mesh x + Screen opening of mesh y(mesh
after x) /2
(Eq 3.1)
This equation estimates the average particle size for the graph of the differential
distribution.
Total Mass (g) = ∑ Individual Sieve Mass Retained (g)
(Eq 3.2)
% Mass Retained= Sieve mass Retained (g) in each individual Mesh
no.x100/Total Mass
(Eq 3.3)
4. 4
Progressive or cumulative particle size distribution is the sum of the differential
distributions. The cumulative distribution is acquired by the collection of differential
distribution. Cumulative screen analysis a type of sieve analysis used to determine cumulative
particle size distribution, sieve results obtained are in cumulative weight/ mass percent less
than the sieve size or cumulative percent passing.
Cumulative % Retained = Cumulative mass x 100/Total Mass
(Eq 3.5)
Cumulative % Passing = 100- Cumulative % Retained
(Eq 3.6)
Sieve analysis has, in general, been used for decades to monitor material quality based
on particle size. For coarse material, sizes that range down to #100 mesh (150μm), a sieve
analysis and particle size distribution is accurate and consistent.
However, for material that is finer than 100 mesh, dry sieving can be significantly less
accurate. This is because the mechanical energy required to make particles pass through an
opening and the surface attraction effects between the particles themselves and between
particles and the screen increase as the particle size decreases.
5. 5
3. EXPERIMENTAL SECTION: APPARATUS AND PROCEDURE
3.1 Materials
• Standard Tyler testing sieve (with cover and pan) with Mesh Number 20, 40,
60, 80, 100, 200
• Sieve Shaker
• Beakers (400 mL)
• Brush
• Analytical balance
• 200 grams of Calcium Carbonate (CaCO3)
3.2 Methods
200 grams of Calcium Carbonate was weighed in the beaker using an analytical
balance. Before commencing with the experiment, all equipment was freed from
suspended solids and dust. The sieves are arranged from the top to the bottom with
increasing mesh number (smallest sieve number from the topmost of the setup). The
weighed 200 grams of CaCO3 was placed in the topmost sieved and was covered. The
sieved was shaken at two-minute interval. After 2 minutes, the stack was carefully
removed from the shaker and each sieve was weighed accordingly. After weighing, the
sieves were carefully stacked again and was shaken with the same interval. The
procedure is repeated two times thus reaching the maximum time of 6 minutes. Data
were recorded each interval. The whole procedure was repeated for trial 2.
6. 6
4. RESULTS AND DISCUSSION
A. Differential Distribution
Figure 4a.1 : Differential Distribution
Based from the graph, the particles size which was based from the screen size with the
greatest mass fraction in each trials of the different time intervals can be determined. For time
interval 2 minutes trial 1 is 0.64 mm and for trial 2 is 0.64 mm. For time interval 4 minutes trial 1
is 0.325 mm and for trial 2 is 0.325 mm. For time interval 6 minutes trial 1 is 0.3 mm and for trial
2 is 0.3 mm. Since all trial in each time interval is the same, it can be said that the experiment is a
success. The graph shows the mass fraction in each sieve where only a specific size can pass
through. The six-minute sieving shows that a small portion of the sample was left in the first sieve.
Thus, this gives the idea that the more longer a sieve operate, the more particles are separated by
size.
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7
MassFraction
Particle size (mm)
Differential Distribution
Trial 1 (2
mins)
Trial2
(2mins)
Trial1
(4mins)
Trial2(4m
ins)
Trial1(6m
ins)
Trial2(6m
ins(
7. 7
B. Cumulative Distribution
Figure 4b.1: Cumulative Analysis for Two minutes sieving
The graph shows the percent of the sample passing through each sieve. Logarithmic
scale is used in the sieve size to compress the length of the line. It shows that in 2 minutes of
sieving, only 53% in the first trial and 47% in the 2nd
trial has passed the first sieve. The
curve also is not steep. This tells us that the mass fraction in each of the sieve is nearly equal.
0
10
20
30
40
50
60
70
80
90
100
0.11
%CumulativePassing
Sieve size mm (Logarithmic scale)
Cumulative Analysis (Two Minutes)
Trial 1
Trial 2
8. 8
Figure 4b.2: Cumulative Analysis for Four Minutes
The graph shows the percent of the sample passing through each sieve. Logarithmic
scale is used in the sieve size to compress the length of the line. It shows that in 4 minutes of
sieving, only 81% in the first trial and 82% in the 2nd
trial has passed the first sieve. This is
higher than the first trial. The curve also is medium steeper compared to the 2-minute sieving.
This shows that the difference between the mass fraction in each sieve is greater compared to
that of the 2-minute.
0
10
20
30
40
50
60
70
80
90
100
0.11
%CumulativePassing
Sieve size mm
Cumulative Analysis (Four Minutes)
Trial 1
Trial 2
0.0000
10.0000
20.0000
30.0000
40.0000
50.0000
60.0000
70.0000
80.0000
90.0000
100.0000
0.11
%CumulativePassing
Sieve Size mm (Logarithmic Scale)
Cumulative Analysis (Six Minutes)
Trial 1
Trial 2
9. 9
Figure 4b.2: Cumulative Analysis for Four Minutes
The graph shows the percent of the sample passing through each sieve. Logarithmic
scale is used in the sieve size to compress the length of the line. It shows that in 6 minutes of
sieving, 97% in the first trial and 97% in the 2nd
trial has passed the first sieve. The curve also
is the steepest among other trials. This tells us that the mass fraction in each of the sieve greatly
differs. This is because more of the particles are distributed among the holes of the sieves.
10. 10
5. CONCLUSION
Particle size and particle size distribution are the properties determined in the experiment
conducted. Screening or sieve analysis is used in this experiment. It is a very effective method to
determine the relative proportions of various sizes among different ranges. The sieve analyses
results are reported in a mass distribution of particles, the Differential Screen analysis reports the
individual retained mass in each sieve while Cumulative Screen Analysis reports the increasing
count of mass in the sieve, or the successive addition of the different sieve mass retained. The
experiment is a success because the date for trial 1 and 2 in the 2, 4, and 6 minutes of interval is
not far from each other. However, it is shown in the experiment that for longer time of sieving,
efficient separation of particles by its size is more observed.
6. RECOMMENDATION
It is recommended by the student to all of the sieves every after use.