it is useful for getting the information about the impact of human hair on the concrete. and variance of the mechanical properties of concrete like compessive strength, flexural strength, shatter resistance and spllitting tensile strength etc...
Quality Control in Concrete and Durability factors : An overviewbybyRAJESH PRASAD,IRSE, CPM/M, RVNL. KOLKATA. An interesting and informative presentation....
Quality Control in Concrete and Durability factors : An overviewbybyRAJESH PRASAD,IRSE, CPM/M, RVNL. KOLKATA. An interesting and informative presentation....
We know every structure is designed for a life period.
The existence of the structure after the service life period is very dangerous to its occupants and surrounding buildings .
The building act usually contains provisions that enable local authorities to control demolition works for the protection of public safety and to ensure adjoining premises and the site are made good on completion of the demolition.
This presentation includes in how many ways plastic can be used in soil stabilization. It covers how a waste material can be used without any additional increase in cost.
This presentation gives a brief introduction on FRC's history, definition and why is it used. Types of FRC's and it's applications is explained in detail in later stages.Also, it covers various properties that affects FRC and a Case study in end.
Concrete is the most widely used construction material in India with annual consumption exceeding 100 million cubic meters.
High performance concrete is a concrete in which certain characteristics are developed for a particular application and environment, so that it will give excellent performance in the structure in which it will be placed.
A high-strength concrete is always a high performance concrete, but a high-performance concrete is not always a high-strength concrete.
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
non destructive testing methods
non destructive testing methods ppt
We know every structure is designed for a life period.
The existence of the structure after the service life period is very dangerous to its occupants and surrounding buildings .
The building act usually contains provisions that enable local authorities to control demolition works for the protection of public safety and to ensure adjoining premises and the site are made good on completion of the demolition.
This presentation includes in how many ways plastic can be used in soil stabilization. It covers how a waste material can be used without any additional increase in cost.
This presentation gives a brief introduction on FRC's history, definition and why is it used. Types of FRC's and it's applications is explained in detail in later stages.Also, it covers various properties that affects FRC and a Case study in end.
Concrete is the most widely used construction material in India with annual consumption exceeding 100 million cubic meters.
High performance concrete is a concrete in which certain characteristics are developed for a particular application and environment, so that it will give excellent performance in the structure in which it will be placed.
A high-strength concrete is always a high performance concrete, but a high-performance concrete is not always a high-strength concrete.
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
non destructive testing methods
non destructive testing methods ppt
Experimental study of concrete using corrugated steel fibreAbishaY1
Concrete is one of the most versatile building materials.
▶ It can cast to fit any structural shape from a cylindrical water storage tank to a rectangular beam or column in a high rise building.
▶ The advantages of using concrete include high compressive strength, good fire resistance, high water resistance, low maintenance, and long service life.
▶ The disadvantages of using concrete include poor tensile strength low strain of fracture and formwork requirement.
▶ The major disadvantage is that concrete develops micro cracks during curing.
▶ It is the rapid propagation of these micro cracks under applied stress that is responsible for the low tensile strength of the materials, hence fibres are added to concrete to overcome these disadvantages.
▶ The addition of fibres in the matrix has many important effects. Most notable among the improved mechanical characteristics of fibre reinforced concrete (FRC) are its superior fracture strength, toughness, impact resistance, flexural strength resistance to fatigue, improving fatigue performance is one of the primary reason for the extensive use of steel fibre reinforced concrete(SFRC) in pavements, bridge decks, offshore structure and machine foundation.
International Journal of Engineering and Science Invention (IJESI)inventionjournals
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
Levelwise PageRank with Loop-Based Dead End Handling Strategy : SHORT REPORT ...Subhajit Sahu
Abstract — Levelwise PageRank is an alternative method of PageRank computation which decomposes the input graph into a directed acyclic block-graph of strongly connected components, and processes them in topological order, one level at a time. This enables calculation for ranks in a distributed fashion without per-iteration communication, unlike the standard method where all vertices are processed in each iteration. It however comes with a precondition of the absence of dead ends in the input graph. Here, the native non-distributed performance of Levelwise PageRank was compared against Monolithic PageRank on a CPU as well as a GPU. To ensure a fair comparison, Monolithic PageRank was also performed on a graph where vertices were split by components. Results indicate that Levelwise PageRank is about as fast as Monolithic PageRank on the CPU, but quite a bit slower on the GPU. Slowdown on the GPU is likely caused by a large submission of small workloads, and expected to be non-issue when the computation is performed on massive graphs.
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Empowering the Data Analytics Ecosystem: A Laser Focus on Value
The data analytics ecosystem thrives when every component functions at its peak, unlocking the true potential of data. Here's a laser focus on key areas for an empowered ecosystem:
1. Democratize Access, Not Data:
Granular Access Controls: Provide users with self-service tools tailored to their specific needs, preventing data overload and misuse.
Data Catalogs: Implement robust data catalogs for easy discovery and understanding of available data sources.
2. Foster Collaboration with Clear Roles:
Data Mesh Architecture: Break down data silos by creating a distributed data ownership model with clear ownership and responsibilities.
Collaborative Workspaces: Utilize interactive platforms where data scientists, analysts, and domain experts can work seamlessly together.
3. Leverage Advanced Analytics Strategically:
AI-powered Automation: Automate repetitive tasks like data cleaning and feature engineering, freeing up data talent for higher-level analysis.
Right-Tool Selection: Strategically choose the most effective advanced analytics techniques (e.g., AI, ML) based on specific business problems.
4. Prioritize Data Quality with Automation:
Automated Data Validation: Implement automated data quality checks to identify and rectify errors at the source, minimizing downstream issues.
Data Lineage Tracking: Track the flow of data throughout the ecosystem, ensuring transparency and facilitating root cause analysis for errors.
5. Cultivate a Data-Driven Mindset:
Metrics-Driven Performance Management: Align KPIs and performance metrics with data-driven insights to ensure actionable decision making.
Data Storytelling Workshops: Equip stakeholders with the skills to translate complex data findings into compelling narratives that drive action.
Benefits of a Precise Ecosystem:
Sharpened Focus: Precise access and clear roles ensure everyone works with the most relevant data, maximizing efficiency.
Actionable Insights: Strategic analytics and automated quality checks lead to more reliable and actionable data insights.
Continuous Improvement: Data-driven performance management fosters a culture of learning and continuous improvement.
Sustainable Growth: Empowered by data, organizations can make informed decisions to drive sustainable growth and innovation.
By focusing on these precise actions, organizations can create an empowered data analytics ecosystem that delivers real value by driving data-driven decisions and maximizing the return on their data investment.
2. Abstract:-
• Fiber reinforced concrete offers a practical and economical
method for overcoming micro-cracks and similar type of
deficiencies.
• It also reduces greater impact, abrasions and shatter
resistances in concrete.
• concrete is weak in tension hence some measures must be
adopted to overcome this deficiency. Human hair is strong
in tension; hence it can be used as a fiber reinforcement
material. Hair Fiber, an alternate non-degradable matter, is
available in abundance and at a very cheap cost. It also
creates environmental problem for its decompositions.
3. • Present studies has been undertaken to study the effect of
human hair on plain cement concrete on the basis of
compressive, crushing and flexural strength to economize
concrete and to reduce environmental problems.
• Experiments were conducted on concrete cubes with
various percentages of human hair fiber i.e. 0%, 1.5% and
2% by weight of cement. Also, very fine hair fibers can be
used for the partial replacement of cement in concrete.
4. Advantages of fiber reinforced concrete:-
• It is used in structures where corrosion is to be avoided at
the maximum.
• It is better suited to minimize cavitations erosion damage in
structures where high velocity flows are encountered.
• In quake prone areas the use of fiber reinforced concrete
would certainly minimize the human casualties.
• Fiber reduces internal forces by locking microscopic cracks
from forming within the concrete.
• Studies have been proven that fiber reinforced concrete is
found to improve the following mechanical properties of
concrete: Compressive Strength, Toughness, Splitting
Tensile Strength and Impact Resistance.
5. Disadvantages:-
• The fibers have to be uniformly, this is found to be a
difficult process and time consuming.
• If this limitation has been overcome by new and effective
methods of fabrication, fiber reinforced concrete is found to
be more adaptable for common concreting works.
7. • It is considered as a waste material
in most parts of the world and is a
common constituent found in
municipal waste streams which
cause enormous environmental
problems.
• It is also available in abundance
and at a very low cost.
• It reinforces the mortar and
prevents the spalling of concrete.
• The properties like high tensile
strength, unique chemical
composition, thermal insulation etc
makes it suitable to be used as a
reinforcing material.
8. PREPARATION OF SPECIMEN:-
A)Collection of materials required
MIX PROPORTION M15
(1:2:4)
M20
(1:1.5:3)
M25
(1:1:2)
Quantity of cement (kg) 3.82 4.86 6.68
Quantity of sand (kg) 7.64 7.29 6.68
Quantity of coarse aggregate (kg) 15.27 14.58 13.36
Water cement ratio 0.48 0.5 0.55
Quantity of water (litre) 1.834 2.43 3.67
Quantity of hair (kg) (1.5%) 0.0573 0.073 0.1
Quantity of hair (kg) (2.0%) 0.0764 0.097 0.134
9. B) Treatment of hair fiber
The hair needed for the preparation of concrete cubes was collected
from salons and beauty parlors. It needs treatment before to be
added in the concrete specimens. It is carried out as in the following
steps:
• Separating hair from other waste depending on the source, the
collected hair may contain wastes. This has to be removed.
• Washing: After sorting, the hair is washed with acetone to remove
impurities.
• Drying: The hair is then dried under sun . After drying, the hair can
be stored without any concern for decay or odour.
• Sorting: The hair is then sorted according to length, color, and
quality. The hair fibers are checked at random for its length and
diameter.
10. METHODOLOGY
• The following tests are conducted on concrete specimens to
analyses its mechanical properties like compressive
strength, flexural strength etc.
1. Compressive Strength test
i. Compressive strength test (on cubes):-
ii. Compressive strength test (on cylinders):-
2. Flexural Strength test
12. • The compressive strength is its ability to resist a crushing force.
• It is the ratio of load at failure to surface area of concrete specimen.
Compressive strength test is conducted on hardened concrete.
• The compression test is carried out on specimens cubical in shape of
the size 150 × 150 × 150 mm. The test is carried out in the following
steps:-
• First of all the mould preferably of cast iron, is used to prepare the
specimen.
• Calculated quantity of hair fiber is evenly added into the concrete
mix manually. During the placing of concrete in the mould it is
compacted with the tamping bar with not less than 25 strokes per
layer. After 24 hours the specimens are removed from the moulds
and immediately submerged in clean fresh water. After 28 days the
specimens are tested under the load in a compression testing
machine.
13. • The load is applied uniformly at the rate of 14 N/mm2 in the
compression testing machine. The specimen for the test is made in
the following manner: Three cubes are made for each M15, M2O
and M25with 0%, 1.5%and 2% hair by weight of cement.
• The results from the compression test are in the form of the
maximum load the cube can carry before it ultimately fails. The
compressive strength can be found by dividing the maximum load
by the area of the test specimen.
Let, P = maximum load carried by the cube before the failure
A = contact area normal to the load = 150 × 150
= 22500 mm2
σ = maximum compressive stress (N/mm2), equals to
the compressive strength
σ = P / A .................N/mm2
• The results of compressive strength test and the corresponding
17. • Compressive strength of cylinders is always less than that of cubes
due to the following reasons:
• contact area of a cube with the upper plate in the testing machine is
more which results in more resistance against expansion resulting in
more compressive strength.
• The ratio between the compressive strengths of cylinders to that of
cubes ranges between 0.8-0.9. By taking this ratio to be 0.8, the
compressive strength of cylinders can be roughly calculated as
shown below:
21. • A flexural test is the most common procedure used to
measure the tensile strength of concrete. The test is carried out
in the following steps:
1. First of all the mould preferably of cast iron, is used to
prepare the specimen of size 150 × 150 × 700 mm.
2. During the placing of concrete in the mould it is compacted
with the tamping bar with not less than 25 strokes per layer.
3. After 24 hours the specimens are removed from the moulds
and immediately submerged in clean fresh water.
4. After curing, place the specimen in the machine in such a
manner that the load is applied to the uppermost surface along
two lines spaced at a proper gauge length, at specified rate.
Increase the load till the specimen fails.
22. SR.
NO
.
MIX DESIGN DAYS Avg.
Flexure
strength of
cube
% increase in
flexure strength
1. M15 : without hair 3 2.877 -
1.5% hair 7 2.997 4%
2% hair 28 3.04 5%
2. M20 : without hair 3 3.176 -
1.5% hair 7 3.19 Not appreciable
2% hair 28 3.275 3%
3. M25 : without hair 3 3.4996 -
1.5% hair 7 3.515 Not appreciable
2% hair 28 3.5765 2%
23. CONCLUSION:-
1.According to the test performed it is observed that there is
remarkable increment in properties of concrete according to
the percentages of hairs by weight of cement in concrete.
There was an overall increase of 1 - 12% in the compressive
strength of concrete and up to 5% in the flexural strength of
concrete test specimens by the addition of hair fibers in
different quantities.
2.It is well observed that the maximum increase is noticed in
the addition of 2% hair fiber, by weight of concrete, in all the
mixes.