SHEAR STRENGTH THEORY
the shear strength of any material is the load per unit area or pressure that it can withstand before undergoing shearing failure.
Admixtures are added in concrete to improve the quality of concrete.
Fly ash (FA), silica fume (SF), ground granulated blast furnace slag (GGBS), Metakaolin (MK), and rice husk ash (RHA)
Possess certain characteristics through which they influence the properties of concrete differently.
Effect of mineral admixtures on the properties of fresh concrete is very important as these properties may affect the durability and mechanical properties of concrete.
Here, I attach a PowerPoint presentation created by me for a competition held by UltraTech. Have a look at this and feel free to share your views with me.
introduction
Classification Of Aggregates, Good Qualities of an Ideal Aggregate: ,Tests on Aggregate:- , Specıfıc gravıty of Aggregate. , Flakiness & Elongation Index , Fineness Modulus (f.m):
Strength of Materials Lecture - 2
Elastic stress and strain of materials (stress-strain diagram)
Mehran University of Engineering and Technology.
Department of Mechanical Engineering.
Introduction To Aggregates Its Properties And Effectson ConcreteUmar Ahad
Introduction to use of aggregates in concrete. Various Properties of aggregates and their effect on fresh and hardened concrete. Flakiness and Elongation Index of Concrete have also been discussed. Various tests performed for suitable usage of concrete in Civil engineering projects have also been discussed.
SHEAR STRENGTH THEORY
the shear strength of any material is the load per unit area or pressure that it can withstand before undergoing shearing failure.
Admixtures are added in concrete to improve the quality of concrete.
Fly ash (FA), silica fume (SF), ground granulated blast furnace slag (GGBS), Metakaolin (MK), and rice husk ash (RHA)
Possess certain characteristics through which they influence the properties of concrete differently.
Effect of mineral admixtures on the properties of fresh concrete is very important as these properties may affect the durability and mechanical properties of concrete.
Here, I attach a PowerPoint presentation created by me for a competition held by UltraTech. Have a look at this and feel free to share your views with me.
introduction
Classification Of Aggregates, Good Qualities of an Ideal Aggregate: ,Tests on Aggregate:- , Specıfıc gravıty of Aggregate. , Flakiness & Elongation Index , Fineness Modulus (f.m):
Strength of Materials Lecture - 2
Elastic stress and strain of materials (stress-strain diagram)
Mehran University of Engineering and Technology.
Department of Mechanical Engineering.
Introduction To Aggregates Its Properties And Effectson ConcreteUmar Ahad
Introduction to use of aggregates in concrete. Various Properties of aggregates and their effect on fresh and hardened concrete. Flakiness and Elongation Index of Concrete have also been discussed. Various tests performed for suitable usage of concrete in Civil engineering projects have also been discussed.
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Briefly describe about Construction Aggregates. How to manufractured how sampling its uses application all thing are described here. To understand about aggregate read this slide.
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
Francesca Gottschalk from the OECD’s Centre for Educational Research and Innovation presents at the Ask an Expert Webinar: How can education support child empowerment?
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Embracing GenAI - A Strategic ImperativePeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Honest Reviews of Tim Han LMA Course Program.pptxtimhan337
Personal development courses are widely available today, with each one promising life-changing outcomes. Tim Han’s Life Mastery Achievers (LMA) Course has drawn a lot of interest. In addition to offering my frank assessment of Success Insider’s LMA Course, this piece examines the course’s effects via a variety of Tim Han LMA course reviews and Success Insider comments.
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An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
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Thesis Statement for students diagnonsed withADHD.ppt
Modulus of Elasticity and Strength
1. 2.2.3.
Modulus of Elasticity and Strength
11/20/99 Author: Tomas U. Ganiron Jr 1
2. The Modulus of the elasticity is the ratio of
stress to corresponding strain below the
proportional limit.
• For granites and limestone the modulus of
elasticity in compression is in the range
2,000,000 – 7,000,000 psi.
• Sandstone has lower value modulus, which
may range from 1,000,000 – 5,000,000 psi.
• The modulus of elasticity of concrete
increases with increase in the modulus of
aggregate used in its manufacture.
• Creep and shrinkage of concrete are also
affected by the modulus of elasticity of the
aggregate
11/20/99 Author: Tomas U. Ganiron Jr 2
3. Compressive strengths of aggregates
depend on the compressive strengths of
original rocks.
The strength of an aggregate affects the
strength of the building material made with
it when the two strength values are close
to each other.
11/20/99 Author: Tomas U. Ganiron Jr 3
4. GRADATION
The particle size or grain-size distribution, of an
aggregate is one of the most influential aggregate
characteristics in determining how it will perform as a
pavement material. Gradation helps determine almost
every important property including stiffness, stability,
durability, permeability, workability, fatigue resistance,
frictional resistance and resistance to moisture
damage . Gradation helps determine durability,
porosity, workability, cement and water requirements,
strength, and shrinkage.
11/20/99 Author: Tomas U. Ganiron Jr 4
5. The process that determine the
GRADING particle-size distribution of a
representative sample of the
aggregate.
BLENDING The process of combining
aggregates of various size to
obtain a specified gradation
11/20/99 Author: Tomas U. Ganiron Jr 5
6. Typical Gradations
Dense or well-graded. Refers to a gradation
that is near maximum density. The most common
HMA mix designs
Gap graded. Refers to a gradation that
contains only a small percentage of aggregate
particles in the mid-size range. The curve is flat
in the mid-size range. These mixes can be
prone to segregation during placement.
11/20/99 Author: Tomas U. Ganiron Jr 6
7. Open graded. Refers to a gradation that
contains only a small percentage of aggregate
particles in the small range. This results in more
air voids because there are not enough small
particles to fill in the voids between the larger
particles. The curve is flat and near-zero in the
small-size range.
Uniformly graded. Refers to a gradation
that contains most of the particles in a very
narrow size range. In essence, all the particles
are the same size. The curve is steep and only
occupies the narrow size range specified.
11/20/99 Author: Tomas U. Ganiron Jr 7
9. Other Gradation Terms
•Fine aggregate (sometimes just referred to as
"fines"). Defined as natural or crushed sand passing the
No. 10 sieve and mineral particles passing the No. 200
sieve.
•Coarse aggregate. Hard, durable particles or fragments
of stone, gravel or slag retained on the No. 10 sieve.
•Fine gradation. A gradation that, when plotted on the
0.45 power gradation graph, falls mostly above the 0.45
power maximum density line.
•Coarse gradation. A gradation that, when plotted on the
0.45 power gradation graph, falls mostly below the 0.45
power maximum density line. The term generally applies
to dense graded aggregate.
•Mineral filler. Defined as a finely divided mineral product
at least 65 percent of which will pass through a No. 200
sieve.
11/20/99 Author: Tomas U. Ganiron Jr 9
10. Gradation is determined using sieve analysis in which a
representative sample of the aggregate is passed
through a series of sieves and the weight retained in
each sieve
SIEVES
- is an apparatus with square
openings.
- A utensil of wire mesh or
closely perforated metal, used
for straining, sifting, or
puréeing.
11/20/99 Author: Tomas U. Ganiron Jr 10
11. STANDARD COARSE AGGREGATE SIEVES are
No.4, 1/8 in., ½ in., ¾ in., 1 in., 1 ½ in., 2
in., 2 ½ in.
STANDARD FINE AGGREGATE SIEVES are
No. 100, No. 50, No. 30, No. 16, No. 8,
No. 4,
11/20/99 Author: Tomas U. Ganiron Jr 11
12. Sieve designation Normal Opening
in. mm. in. mm. Type
2 50 2 50 H
1½ 37.5 1.5 37.5 F
1 25 1 25 H
¼ 19 0.75 19 F
½ 12.5 0.5 12.5 H
⅛ 9.5 0.375 9.5 F
No. 4 4.74 0.187 4.74 F
No. 8 2.36 0.0937 2.36 F
No. 16 1.18 0.0469 1.18 F
No. 30 600 ųm 0.0234 0.6 F
No. 50 300 ųm 0.0117 0.3 F
No. 100 150 ųm 0.0059 0.15 F
No. 200
11/20/99
75 ųm 0.003
Author: Tomas U. Ganiron Jr
0.075 F 12
H = half sieve F = full sieve
13. Other Properties
Other important aggregate
physical properties are:
•Toughness and abrasion resistance. Aggregates
should be hard and tough enough to resist crushing,
degradation and disintegration from activities such
as manufacturing stockpiling, production, placing and
compaction
•Durability and soundness. Aggregates must be
resistant to breakdown and disintegration from weathering
(wetting/drying) or else they may break apart and cause
premature pavement distress.
•Particle shape and surface texture. Particle shape and
surface texture are important for proper compaction, load
resistance and workability. Generally, cubic angular-
shaped particles with a roughU.surface texture are best. 13
11/20/99 Author: Tomas Ganiron Jr
14. •Cleanliness and deleterious materials. Aggregates
must be relatively clean when used in HMA. Vegetation,
soft particles, clay lumps, excess dust and vegetable
matter may affect performance by quickly degrading,
which causes a loss of structural support and/or
prevents binder-aggregate bonding.
•Specific gravity. Aggregate specific gravity is useful
in making weight-volume conversions and in calculating
the void content in compacted HMA (Roberts et al.,
1996).
11/20/99 Author: Tomas U. Ganiron Jr 14
15. Find the volume of Voids in a 3-yd³ coarse aggregate of
bulk density equal to 102 pcf. The specific gravity of the
particle is 2.65
Solution:
SG x W – B
Void = X 100
SG x W
Specific gravity, SG = 2.65 Density of water,
Bulk density, B = 102 pcf W = 62.4 pcf
2.65(62.4) - 102
Void = X 100
2.65(62.4)
27
Volume of voids = 38.3(3) x
11/20/99 = 31 ft³ 15
100
Author: Tomas U. Ganiron Jr