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Quality Control in Concrete and Durability factors : An overviewbybyRAJESH PRASAD,IRSE, CPM/M, RVNL. KOLKATA. An interesting and informative presentation....
non destructive concrete testing equipment
non destructive concrete testing methods
non destructive test Penetration method
Rebound hammer method
Pull out test method
Ultrasonic pulse velocity method
Radioactive methods
methods of testing concrete
concrete strength testing methods
types of non destructive testing
non destructive concrete testing equipment
concrete tests pdf
destructive and non destructive testing
concrete testing procedures
non destructive test for concrete
destructive and non destructive testing
non destructive testing pdf
types of non destructive testing
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non destructive testing methods ppt
Quality Control in Concrete and Durability factors : An overviewbybyRAJESH PRASAD,IRSE, CPM/M, RVNL. KOLKATA. An interesting and informative presentation....
Retrofitting is the seismic strengthening of existing damaged or undamaged structures.
Retrofitting a building involves changing its systems or structure after its initial construction and occupation. This work can improve amenities for the building's occupants and improve the performance of the building
Hi viewers, I am back with the various concepts of TYPES OF TESTS ON CONCRETE for civil engineers.
Here, i explained few topics
What is a concrete? Classification based o state of concrete? and various tests?
what is polymer concrete, types, properties, material used in manufacturing process , manufacturing process, applications and their advantages. case study on polymer composite concrete.
It is the presentation based on pre- stressed concrete construction which includes each and every point and scope which may be useful to civil engineering students
Get PPT here
https://civilinsider.com/design-philosophies-of-rcc-structure/
www.civilinsider .com
www.civilinsider .com
www.civilinsider .com
www.civilinsider .com
Various design philosophies have been invented in the different parts of the world to design RCC structures. In 1900 theory by Coignet and Tedesco was accepted and codified as Working Stress Method. The Working Stress Method was in use for several years until the revision of IS 456 in 2000.
What are the Various Design Philosophies?
Working Stress Method
limit state method
ultimate load method
#civil insider
Retrofitting is the seismic strengthening of existing damaged or undamaged structures.
Retrofitting a building involves changing its systems or structure after its initial construction and occupation. This work can improve amenities for the building's occupants and improve the performance of the building
Hi viewers, I am back with the various concepts of TYPES OF TESTS ON CONCRETE for civil engineers.
Here, i explained few topics
What is a concrete? Classification based o state of concrete? and various tests?
what is polymer concrete, types, properties, material used in manufacturing process , manufacturing process, applications and their advantages. case study on polymer composite concrete.
It is the presentation based on pre- stressed concrete construction which includes each and every point and scope which may be useful to civil engineering students
Get PPT here
https://civilinsider.com/design-philosophies-of-rcc-structure/
www.civilinsider .com
www.civilinsider .com
www.civilinsider .com
www.civilinsider .com
Various design philosophies have been invented in the different parts of the world to design RCC structures. In 1900 theory by Coignet and Tedesco was accepted and codified as Working Stress Method. The Working Stress Method was in use for several years until the revision of IS 456 in 2000.
What are the Various Design Philosophies?
Working Stress Method
limit state method
ultimate load method
#civil insider
well foundation of six lane new ganga bridge near kacchi dargah in district P...Arman Hashmi
WELL FOUNDATION PPT, well foundation of six lane new ganga bridge near kacchi dargah in district Patna on NH-30 to near Bidupur in vishali district on NH-103 from bihar state road developement corporation limited
The aim of strengthening is to increase the capacity of an existing structural element.
Strengthening can be achieved by; Replacing poor quality or defective material Attaching additional load-bearing material Redistribution of the loading actions
THIS IS THE PRESENTATION ON REPAIR AND RESTORATION OF CONCRETE STRUCTURE. DURING EARTHQUAKE, STRUCTURES GOES TO COLLAPSE OR GET CRACK. DUE TO THIS MINOR CRACK THE STRUCTURE WILL COLLAPSE AFTER EARTHQUAKE DONE. TO RESOLVE REPAIR AND RESTORATION WORK ADOPTED TO MAKE STRUCTURE STRENGTHENING.
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The College Bus Management system is completely developed by Visual Basic .NET Version. The application is connect with most secured database language MS SQL Server. The application is develop by using best combination of front-end and back-end languages. The application is totally design like flat user interface. This flat user interface is more attractive user interface in 2017. The application is gives more important to the system functionality. The application is to manage the student’s details, driver’s details, bus details, bus route details, bus fees details and more. The application has only one unit for admin. The admin can manage the entire application. The admin can login into the application by using username and password of the admin. The application is develop for big and small colleges. It is more user friendly for non-computer person. Even they can easily learn how to manage the application within hours. The application is more secure by the admin. The system will give an effective output for the VB.Net and SQL Server given as input to the system. The compiled java program given as input to the system, after scanning the program will generate different reports. The application generates the report for users. The admin can view and download the report of the data. The application deliver the excel format reports. Because, excel formatted reports is very easy to understand the income and expense of the college bus. This application is mainly develop for windows operating system users. In 2017, 73% of people enterprises are using windows operating system. So the application will easily install for all the windows operating system users. The application-developed size is very low. The application consumes very low space in disk. Therefore, the user can allocate very minimum local disk space for this application.
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.
Democratizing Fuzzing at Scale by Abhishek Aryaabh.arya
Presented at NUS: Fuzzing and Software Security Summer School 2024
This keynote talks about the democratization of fuzzing at scale, highlighting the collaboration between open source communities, academia, and industry to advance the field of fuzzing. It delves into the history of fuzzing, the development of scalable fuzzing platforms, and the empowerment of community-driven research. The talk will further discuss recent advancements leveraging AI/ML and offer insights into the future evolution of the fuzzing landscape.
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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.
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.
Quality defects in TMT Bars, Possible causes and Potential Solutions.PrashantGoswami42
Maintaining high-quality standards in the production of TMT bars is crucial for ensuring structural integrity in construction. Addressing common defects through careful monitoring, standardized processes, and advanced technology can significantly improve the quality of TMT bars. Continuous training and adherence to quality control measures will also play a pivotal role in minimizing these defects.
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.
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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.
2. Jacketing
• Increase bearing load
• Concrete jacketing is needed to increase
bearing load capacity following a modification
of the structural design or to restore structural
design integrity due to a failure in the
structural member.
• This technique is used on vertical surfaces
such as walls, columns and other combinations
such as beam sides and bottoms.
3. • The initial concrete substrate should e repaired
• - All cracks should be treated
• - All weak, damaged and easily removable
concrete should be chipped away
• - Clean any corroded steel by abrasion or
replace any damaged steel bars
4. • Installation of reinforcement
• We recommend the use of weberanc 405
BFX. It is applied as follows:
• Drill hole to correct diameter and depth
• Clean the drilled hole and remove all dust
• Inject the weberanc 405 BFX
• Install the rebar
•
5. • Formwork placement
• Formwork is best attached directly to the
concrete surface with expansion anchors or
standard form ties. Shoring or scaffolding can
be used to support the formwork.
6. • Pumping application
• The placement of material into the formed
cavity depends on the geometries. Vertical
surfaces start at the lowest point. We
recommend the use of webertec MC1. It is a
pumpable, self-compacting micro concrete.
7. • Curing ad protection
• Curing is recommended immediately after
removal of framework.
8. • Column strengthening is a process used to add
or restore ultimate load capacity of reinforced
concrete columns. It is used for seismic
retrofitting, supporting additional live load or
dead load that not included in the original
design, to relieve stresses generated by design
or construction errors, or to restore original
load capacity to damaged structural elements.
9. • There are several techniques which are used to
strengthen reinforced concrete columns like
reinforced concrete jacketing, steel jacketing,
and FRP confining or jacketing.
10. When strengthening of R.C. Column
is needed?
• The load carried by the column is increased due
to either increasing the number of floors or due to
mistakes in the design.
• The compressive strength of the concrete or the
percent and type of reinforcement are not
according to the codes’ requirements.
• The inclination of the column is more than the
allowable.
• The settlement in the foundation is more than the
allowable.
11. • Strengthening Techniques for R.C. Columns
• There are three major techniques for
strengthening reinforced concrete columns
which are discussed below:
• 1. Reinforced Concrete Jacketing
• 2. Steel Jacketing
• 3. FRP Confining or Jacketing
12. 1. Reinforced Concrete Jacketing
• It is one of the techniques used to improve or
restore capacity of reinforced concrete column.
The size of the jacket and the number and
diameter of the steel bars used in the jacketing
process depend on the structural analysis that
was made to the column.
13. Reinforced Concrete Jacketing
Process
• Initially, reduce or eliminate loads on columns
temporarily if it is required. This is done
by putting mechanical jacks and additional props
between floors.
• After that, if it is found out that reinforcements
are corroded, the remove the concrete cover and
clean the steel bars using a wire brush or sand
compressor.
• Then, coat the steel bars with an epoxy material
that would prevent corrosion.
14. • If reducing loads and cleaning reinforcement is
not needed, the jacketing process begin by
adding steel connectors into the existing
column.
• The steel connectors are added into the column
by making holes 3-4mm larger than the
diameter of the used steel connectors and 10-
15cm depth.
• The spacing of new stirrups of the jacket in
both the vertical and horizontal directions
should not be more than 50cm.
15. • Filling the holes with an appropriate epoxy
material then inserting the connectors into the
holes.
• Adding vertical steel connectors to fasten the
vertical steel bars of the jacket following the
same procedure in step 5 and 6.
• Installing the new vertical steel bars and
stirrups of the jacket according to the designed
dimensions and diameters.
16. • Coating the existing column with an
appropriate epoxy material that would
guarantee the bond between the old and new
concrete.
• Pouring the concrete of the jacket before the
epoxy material dries. The concrete used should
be of low shrinkage and consists of small
aggregates, sand, cement and additional
materials to prevent shrinkage. Steps of
reinforced concrete jacketing are illustrated
in Fig. 1.
18. 2. Steel Jacketing
• This technique is chosen when the loads
applied to the column will be increased, and at
the same time, increasing the cross sectional
area of the column is not permitted.
19. • Steel Jacketing Process
• Removing the concrete cover.
• Cleaning the reinforcement steel bars using a
wire brush or a sand compressor.
• Coating the steel bars with an epoxy material
that would prevent corrosion.
20. • Installing the steel jacket with the required size
and thickness, according to the design, and
making openings to pour through them the
epoxy material that would guarantee the
needed bond between the concrete column and
the steel jacket.
• Filling the space between the concrete column
and the steel jacket with an appropriate epoxy
material.
21. Fig. 2: Increasing the cross-sectional area of column by steel jacketing
22. • In some cases, where the column is needed to
carry bending moment and transfer it
successfully through the floors, one should
install a steel collar at the neck of the column
by means of bolts or a suitable bonding
material.
27. • 3. FRP Confining or Jacketing
• FRP axial strengthening systems are used to
improve or enhance the capacity of reinforced
concrete columns. It can be used for both
circular and rectangular shaped columns but it
is more effective in the former shape.
29. Advantages of FRPAxial Strengthening
Systems for Columns
• Increases the ultimate load carrying capacity of
reinforced concrete member
• Improves shear capacity of reinforced concrete
element
• Reinforcement bar lap splice capacity of the
member is improved due to FRP axial
strengthening system application
• The ductility of reinforced concrete column is
improved considerably.