The presentation illustrates a technique for ground improvement, Grouting. In India, grouting is still not being used very much. In this presentation, I have demonstrated the basic types of grouting, goals of ground improvement and two case studies of grouting.
The vacuum dewatering process basically improves strength, durability, and other properties of concrete by reducing the water-cement ratio immediately after the mix is placed, usually in floors and other flatwork. A Bridgeport, Connecticut vacuum dewatering demonstration, although it involved no new ...
vacuum dewatering system
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dewatering pump
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interesting civil engineering topics
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In this presentation i have gone through about various prospects and challenges that have been faced at the time of installation,its types,method of installation &its application.
General presentation of under-reamed piles. Mainly for diploma engineers, it is really helpful as its objective, dimensions, usage, etc are shown with proper images. It will really helpful for the basic knowledge of under-reamed piles.
Vibro replacement stone columns are a ground improvement technique to improve the load bearing capacity and reduce the settlement of the soil. On many occasions, it is noted that the local soil is, by nature, unable to bear the proposed structure, so the use of ground improvement techniques may be necessary. Use of stone columns is one such technique. The stone column consists of crushed coarse aggregates of various sizes. The ratio in which the stones of different sizes will be mixed is decided by design criteria
The vacuum dewatering process basically improves strength, durability, and other properties of concrete by reducing the water-cement ratio immediately after the mix is placed, usually in floors and other flatwork. A Bridgeport, Connecticut vacuum dewatering demonstration, although it involved no new ...
vacuum dewatering system
vacuum dewatering pump
vacuum dewatering box
wellpoint pump systems
dewatering pump system
dewatering pump
dewatering wellpoint
small wellpoint dewatering systems
interesting civil engineering topics
civil engineering topics for presentation
civil seminar topics ppt
civil engineering seminar topics 2018
best seminar topics for civil engineering
seminar topics pdf
seminar topics for mechanical engineers
seminar topic for civil engineering pdf
In this presentation i have gone through about various prospects and challenges that have been faced at the time of installation,its types,method of installation &its application.
General presentation of under-reamed piles. Mainly for diploma engineers, it is really helpful as its objective, dimensions, usage, etc are shown with proper images. It will really helpful for the basic knowledge of under-reamed piles.
Vibro replacement stone columns are a ground improvement technique to improve the load bearing capacity and reduce the settlement of the soil. On many occasions, it is noted that the local soil is, by nature, unable to bear the proposed structure, so the use of ground improvement techniques may be necessary. Use of stone columns is one such technique. The stone column consists of crushed coarse aggregates of various sizes. The ratio in which the stones of different sizes will be mixed is decided by design criteria
special concrete and high performance concreteErankajKumar
GROUTING OF CONCRETE, advantage ofGrouting,Characteristics of Grouting, GUNTING OF
CONCRETE, Application of Guniting, Properties of Guniting, advantage and disadvantage of Guniting, UNDERWATER CONCRETING, Properties of underwater concrete, METHODS OF UNDERWATER CONCRETE, advantage and disadvantage of underwater concrete, HOT WEATHERING CONCRETE, precautions, COLD WEATHER CONCRETING, PUMPABLE CONCRETE, Requirements of Mix Design for Pumpable Concrete, Ready Mixed Concrete RMC, Types of Ready Mixed Concrete, advantage and disadvantage of ready mixed concrete, introduction in High performance concrete HPC, selection of materials, behaviour of fresh high performance concrete HPC , behaviour of Hardened High performance concrete HPC when to use High performance concrete HPC , application of HPC , Advantage of HPC , Limitations of HPC
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.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
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.
Vaccine management system project report documentation..pdfKamal Acharya
The Division of Vaccine and Immunization is facing increasing difficulty monitoring vaccines and other commodities distribution once they have been distributed from the national stores. With the introduction of new vaccines, more challenges have been anticipated with this additions posing serious threat to the already over strained vaccine supply chain system in Kenya.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
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.
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Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
Automobile Management System Project Report.pdfKamal Acharya
The proposed project is developed to manage the automobile in the automobile dealer company. The main module in this project is login, automobile management, customer management, sales, complaints and reports. The first module is the login. The automobile showroom owner should login to the project for usage. The username and password are verified and if it is correct, next form opens. If the username and password are not correct, it shows the error message.
When a customer search for a automobile, if the automobile is available, they will be taken to a page that shows the details of the automobile including automobile name, automobile ID, quantity, price etc. “Automobile Management System” is useful for maintaining automobiles, customers effectively and hence helps for establishing good relation between customer and automobile organization. It contains various customized modules for effectively maintaining automobiles and stock information accurately and safely.
When the automobile is sold to the customer, stock will be reduced automatically. When a new purchase is made, stock will be increased automatically. While selecting automobiles for sale, the proposed software will automatically check for total number of available stock of that particular item, if the total stock of that particular item is less than 5, software will notify the user to purchase the particular item.
Also when the user tries to sale items which are not in stock, the system will prompt the user that the stock is not enough. Customers of this system can search for a automobile; can purchase a automobile easily by selecting fast. On the other hand the stock of automobiles can be maintained perfectly by the automobile shop manager overcoming the drawbacks of existing system.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
3. GOALS OF GROUND IMPROVEMENT
To increase the bearing capacity
To provide lateral stability
To increase resistance to liquefaction
Modify soil properties
To increase the stiffness
Low permeability
3
5. WHAT IS GROUTING?
Improvement of soil or rock through injection of grout, cement or chemical grout.
Grouting may be divided into following :-
1. Intrusion grouting
2. Compaction grouting
3. Permeation grouting
4. Jet grouting
5. Compensation grouting
5
6. INTRUSION GROUTING
The joints or fractures in soil or rock are filled with injection
of grout
Pipes are first inserted into the soil from surface and than the
grout is added with pump
Advantage is, it decreases the permeability of rocks
Generally cement grout is used
Water retaining structures like dams, it is used to reduce
seepage
6
Fig 1. Intrusion Grouting
7. COMPACTION GROUTING
(DISPLACEMENT GROUTING)
Grout is inserted with pump at high pressure to form a
series of intrusions in deposit
25 mm thick slump doesn’t penetrate deep in soil and
compact the adjacent soil
Resulting increase in strength
Generally used in loose soil as well as unsaturated fine-soil
When to restore the structure having excessive settlement,
compaction grouting is used to reduce the settlement
7
Fig 2. Compaction Grouting
8. PERMEATION GROUTING
Thin grouting is inserted into soil that permeates into
voids of soil
The grout cures after a time and turns the soil into solid
mass
Generally used in fine-grained soil
Makes the soil less compressible, strong and impermeable
Applied to the projects of tunneling and stabilizing soil
before excavation
8
Fig 3. Permeation Grouting
9. JET GROUTING
Pipe fitted with horizontal jets inserted into soil at require
depth and with pressure grout is inserted
Pipe is gradually raised and rotated while grouting still
being injected
Column is formed in the soil that makes the soil
impermeable and strong
Applied to water-logged area as well as in stabilization of
soil before excavation and tunneling operations
9
Fig 4. Jet Grouting
10. COMPENSATION GROUTING
Compensation Grouting is a process used to control or
reverse the settlement of structures
It consists of the injection of material into the soil
between the foundation to be controlled and the process
causing the settlement
The material injected is forced into fractures thereby
causing an expansion to take place counteracting the
settlement that occurs or producing a controlled heave
of the foundation
Because the process requires that the soil is fractured
and not permeated, Compensation Grouting may be
used in most soil types ranging from gravels to clays or
weak soils
10
Fig 5. Compensation Grouting
11. CASE STUDY 1
LONDON VICTORIA STATION UPGRADE BY JET
GROUTING
Keller carried out the UK‘s largest ever Jet Grouting
project as part of a £700m scheme to upgrade one of
London‘s busiest rail interchanges.
The scheme involved the construction of a new ticket
hall and underground walkway to the mainline
station. Much of these new structures are to be
constructed at the level of the interface between
the London Clay and water-bearing Terrace
Gravels.
Additionally, the site was surrounded by numerous
fragile listed buildings and one of London's
important theatres.
11
FIG 6. VICTORIA STATION UNDER
CONSTRUCTION
12. CONT…
Keller initially carried out a trial at the site in 2008 to prove the performance of Jet Grouting. Work on
the project itself began in October 2011 and lasted until 2014. The primary aim of the scheme was to
provide a 2m thick annulus around all of the proposed tunnels and so allow safe excavation through solid
ground. This was done by installing overlapping columns ranging in diameter from 1.4m to 1.8m to
depths up to 14m. The grout columns were installed to achieve a target strength of between 1N/mm2 and
10N/mm2.
One of the most complex parts of the project was the careful measurement of the orientation of the drill
string using GPS sensors at the top and bottom of the masts in order to achieve the required 50mm
tolerance. Additionally, column diameter was monitored by thermal degradation, a technique used by
Keller in Austria and Germany. All of this information can be entered into the BIM Model to ensure
quality control.
12
13. CONT…
Excavation of the early shafts was successful and allowed for the installation of 2500 Jet Grout columns.
System: Jet Grouting
Client: Transport For London
Contractor : Taylor Woodrow BAM Nuttall
Engineer: Mott McDonald
13
14. CASE STUDY 2
Cross-rail C300/C410 Compensation Grouting
Cross-rail is the largest and most ambitious projects in Europe.
Works started n May 2009 and required over 10,000 people working across over 40 construction
sites.
The compensation grouting scheme on the Cross-rail contract for the Western Running Tunnel
and Caverns (C300/C410) required the installation of over 45000m of 75mm diameter steel tube
pipes.
The TaM pipes cover an approximate area of 50000 m2 in the Bond Street and Tottenham Court
Road stations.
It involves the construction of 42km of twin underground railway tunnels and 10 new stations.
The line commences in Maidenhead and the existing station, runs beneath London from
Paddington to East London When it opens in 2018, it will transform rail transport in London,
increasing capacity by 10% and cutting journey times across the city.
14
15. CONT…
Keller carried out the Compensation grouting works as mitigation to the large diameter platform
tunnel and cross passage excavations underneath densely populated areas of high value and with
critical assets.
System: Compensation Grouting
Client: Cross-rail
Contractor: Bam Ferrovial Kier JV
Year of Execution: 2013/14
15
16. REFERENCES
1. SOIL MECHANICS AND ENGINEERING, K.R.ARORA
2. KELLER INDIA/WWW.KELLER.COM
3. KELLER UK/WWW.KELKER.CO.UK
4. Ground Improvement and Ground Control including Waste Containment with Geosynthetics ,
DR. J.N.JHA
16