This document discusses Ordinary Portland Cement and Rapid Hardening Cement. It defines cement and describes its main types. Ordinary Portland Cement (OPC) is the most widely used type and comprises calcium, silica, alumina, and iron. The production process involves crushing raw materials, mixing them, heating the mixture in a kiln to form clinker, grinding the clinker, and adding gypsum. OPC is used in construction where special properties are not required. Rapid Hardening Cement gains strength more quickly than OPC and is used when early strength or cold weather work is needed.
Cement is a building material for binding bricks, stones or aggregates.
Used for making mortar or concrete.
Cements natural and artificial.
Natural cement-burning and crushing of stones and lime.
Artificial cement-burning at high temperature and gypsum is added.
cement manufacturing process pdf
manufacturing of cement process
dry process of cement manufacturing
process of making cement
wet process of cement manufacturing
types of cement
production of cement
manufacturing process of portland cement
cement production process description pdf
manufacture of cement
cement making process pdf
cement production process flow diagram
cement production process
cement manufacturing process ppt
cement manufacturing process flow chart
what is concrete made of
Cement is a building material for binding bricks, stones or aggregates.
Used for making mortar or concrete.
Cements natural and artificial.
Natural cement-burning and crushing of stones and lime.
Artificial cement-burning at high temperature and gypsum is added.
cement manufacturing process pdf
manufacturing of cement process
dry process of cement manufacturing
process of making cement
wet process of cement manufacturing
types of cement
production of cement
manufacturing process of portland cement
cement production process description pdf
manufacture of cement
cement making process pdf
cement production process flow diagram
cement production process
cement manufacturing process ppt
cement manufacturing process flow chart
what is concrete made of
Portland Cement
Portland cement is extensively used in the construction of nuclear waste facilities and as a matrix for shielding and immobilization of radioactive species. It affords both a physical and chemical potential for immobilization. These potentials are quantified and related to specification, fabrication, and performance. However, performance in the long term depends on the cement formulation as well as the geochemistry of the disposal environment and interactions between cement and its near field environment including inactive waste components and other containment materials. Future performance can be estimated using data from natural analogs,
the experience of the performance of historic structures, and by modeling. A comparison of Portland cement with other non-Portland cement is also made.
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
State of ICS and IoT Cyber Threat Landscape Report 2024 previewPrayukth K V
The IoT and OT threat landscape report has been prepared by the Threat Research Team at Sectrio using data from Sectrio, cyber threat intelligence farming facilities spread across over 85 cities around the world. In addition, Sectrio also runs AI-based advanced threat and payload engagement facilities that serve as sinks to attract and engage sophisticated threat actors, and newer malware including new variants and latent threats that are at an earlier stage of development.
The latest edition of the OT/ICS and IoT security Threat Landscape Report 2024 also covers:
State of global ICS asset and network exposure
Sectoral targets and attacks as well as the cost of ransom
Global APT activity, AI usage, actor and tactic profiles, and implications
Rise in volumes of AI-powered cyberattacks
Major cyber events in 2024
Malware and malicious payload trends
Cyberattack types and targets
Vulnerability exploit attempts on CVEs
Attacks on counties – USA
Expansion of bot farms – how, where, and why
In-depth analysis of the cyber threat landscape across North America, South America, Europe, APAC, and the Middle East
Why are attacks on smart factories rising?
Cyber risk predictions
Axis of attacks – Europe
Systemic attacks in the Middle East
Download the full report from here:
https://sectrio.com/resources/ot-threat-landscape-reports/sectrio-releases-ot-ics-and-iot-security-threat-landscape-report-2024/
Slack (or Teams) Automation for Bonterra Impact Management (fka Social Soluti...Jeffrey Haguewood
Sidekick Solutions uses Bonterra Impact Management (fka Social Solutions Apricot) and automation solutions to integrate data for business workflows.
We believe integration and automation are essential to user experience and the promise of efficient work through technology. Automation is the critical ingredient to realizing that full vision. We develop integration products and services for Bonterra Case Management software to support the deployment of automations for a variety of use cases.
This video focuses on the notifications, alerts, and approval requests using Slack for Bonterra Impact Management. The solutions covered in this webinar can also be deployed for Microsoft Teams.
Interested in deploying notification automations for Bonterra Impact Management? Contact us at sales@sidekicksolutionsllc.com to discuss next steps.
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
2. Content
Definition of Cement & its types
Basic composition of ordinary portland cement
Production & Manufacturing Process
Uses of OPC
Grades of OPC
Rapid Hardening Portland Cement
3. Cement & its types
Definition : “ It is defined as the bonding material
having cohesive and adhesive properties which
makes it capable to unite the different construction
materials and form the compacted assembly.”
5. Ordinary Portland Cement
Ordinary Portland Cement is one of the most widely used
type of Portland Cement.
The name portland cement was given by Joseph Aspdin in
1824 due to its similarity in colour and its quality when it
hardens like Portland stone.
Portland stone is white grey limestone in island of Portland,
Dorset.
Composition of OPC : The chief chemical components of
ordinary portland cement:
1. Calcium 3. Alumina
2. Silica 4. Iron
6. Basic composition of OPC
Contents %
CaO 60-67
SiO2 17-25
Al2O3 3-8
Fe2O3 0.5-6.0
MgO 0.5-4.0
Alkalis 0.3-1.2
SO3 2.0-3.5
The chief compound which usually form
in process of mixing :
8. Production & Manufacturing Process
Manufacturing
Raw Materials
1. Calcareous (material having content of lime)
2. Argillaceous (material having content of silica & alumina)
3. Gypsum
Process
Cement is usually manufactured by two process:
1. Wet process
2. Dry process
These two process differ in operation but fundamental of
both these process are same.
9. There are five stages in manufacturing of cement by wet
process:
I. Crushing and grinding of raw materials
II. Mixing the material in proportion
III. Heating the prepared mixture in rotary kiln
IV. Grinding the heated product known as Clinker
V. Mixing and grinding of cement clinker with gypsum
10. Crushing And Grinding:
In this phase, soft raw materials are first crushed into suitable
size. This is done usually in cylindrical balls or tube mills
containing the charge of steel balls.
Mixing the material:
In this part, the powdered limestone is mixed with the clay
paste in proper proportion (75%=limestone; clay=25%)
The mixture is then grounded and made homogeneous by
mean of compressed gas.
The resulting material is known as “Slurry” having 35-40%
water.
11. Heating the slurry in rotary kiln:
Slurry is then introduced in rotary kiln with the help of
conveyor. The rotary kiln consists of large cylinders 8 to 15 feet
in diameter & height of 300-500 feet.
Kiln rotates at the rate of 1-2 revolution per minute. In rotary
kiln, slurry passed through different zones of temperature.
This whole process in kiln usually covers 2 to 3 hours.
12. Different temperature zones are as under:
i. Preheating Zone : Temperature is kept upto 500 degree
celsius.
ii. Decomposition Zone : Temperature is raised upto 800 degree
celsius.
iii. Burning Zone : Temperature is maintained upto 1500 degree
celsius.
iv. Cooling Zone : This is last stage where the whole assembly is
cooled upto 150 to 200 degree celsius.
13. Clinker Formation:
The product which is obtained from the rotary kiln is known as
the “Cement Clinker”. Clinker is usually in the form of greenish
black or grey colored balls.
Grinding the clinker with gypsum:
The cement clinker is then air cooled. The required amount of
gypsum (5%) is ground to fine powder and then mixed with
clinker.
Finally, Cement is packed in bags and then transported to the
required site.
14. Production
The manufacture of OPC is decreasing all over the world in view
of popularity of blended cement on account of lower energy
consumption, environmental pollution, economic and other
technical reasons.
In India for the year 1998-99 out of the total cement production
i.e., 79 million tons, the production in OPC in 57.00 million tons
i.e., 70%. The production of PPC is 16 million tons i.e., 19% and
slag cement is 8 million tons i.e., 10%.
In the coming years, the use of OPC may still come down but it
will remain as an important type for general construction.
15. Uses of OPC
It is normally used for the reinforced concrete buildings, bridges,
pavements, and where soil condition are normal.
It is used for general construction purposes where special
properties are not required.
It has great resistance to cracking and shrinkage but less
resistance to chemical attacks.
It is also used for most of concrete masonry units.
16. Grades of Cement
For engineering purposes, there are many types of cement but in
general, ‘Ordinary Portland Cement’(OPC) which is available in
three grades should be used in house construction.
1. 33 Grade OPC
2. 43 Grade OPC
3. 53 Grade OPC
17. 33 Grade OPC
It is more suitable cement for masonry and general concrete
works where the members are not taken to very high stresses.
18. 43 Grade OPC
43 grades of cement are used where high early strength in 1-28
days range is required.
19. 53 Grade OPC
The strength of 53 grade does not much after 28th day because of
early gain while 33 grade continues to gain strength after 28th
day.
21. Rapid Hardening Portland Cement
Rapid Hardening Portland Cement (RHPC) is similar to ordinary
cement but with higher tri-calcium silicate (C3S) content and
finer grinding. It gain strength more quickly than OPC, though
the final strength is only slightly higher.
This type of cement is also called High Early Strength Portland
Cement.
The one day strength of this cement is equal to the three day
strength of OPC with the same water-cement ratio.
22. Uses of RHPC
It is used where formwork has to be removed as early as possible
in order to reuse it.
It is used where high early strength is required.
it is generally used for constructing road pavements.
It is used for cold weather concreting because rapid evolution of
heat during hydration protects the concrete against freezing.