The document outlines procedures for developing an asphalt mix design that meets project specifications for long-lasting pavement performance. It describes determining the optimal blend of aggregates and asphalt cement through testing different gradations and proportions to achieve sufficient stability, voids, workability and other metrics. Mix types, aggregate analysis, preparing test specimens, and evaluating mixtures to adjust as needed are discussed. Terminology and calculations for analyzing compacted paving mixtures are also provided.
Effect of air void on dense graded bituminous mixAvinash Bhosale
SEMINAR FOR effect of air voids on dense graded bituminous mix.
MATERIALS USE FOR NATIONAL HIGHWAY.
such as Dense bituminous macadam.
air voids in road pavement and how to analyse it.
At the California Asphalt Pavement Association (CalAPA) Spring “Technical Tune-Up” Educational Workshop held April 5, 2022 in Brea, a presentation titled, "Superpave Mix Design – What Agencies Need to Know" was delivered by
Dave Aver, QC Associate (ret), City of Santa Rosa.
In 2015, Caltrans adopted the “Superpave” mix design methodology for asphalt pavements. This session will
provide an overview of the Superpave method and provide the difference to the Hveem mix design methodology.
The Study of Water Stability for SBS and Polyacrylate Composite Modified Asph...IJERA Editor
Polyacrylate (Polyacrylate, called PAE) is a kind of thermoplastic polymer latex, which is easy to form a waterproof membrane and has greater adhesion ,always be used in concrete to enhance its ability to resist water corrosion.SBS is an inorganic modifier for modified asphalt mixture will help to improve the high and low temperature stability and other road performance, ect.However,its ability to enhanced asphalt mixture’s resistance for water damage is not obvious. In order to research the two composite modified asphalt mixture’s resistance effects to water damage , the Marshall Stability Test and Fort Kentucky Flooding Scattering Experiments were used on asphalt mixtures, SBS modified asphalt mixture and composite modified asphalt mixture and the effect of different composite modified PAE content were studied. The results showed that: PAE can significantly improve the water stability of asphalt mixture, what’s more, with the increase use of PAE,the mass loss rate of asphalt mixture decreases steadily.
Dave Aver, City of Santa Rosa, and Greg Reader, George Reed Inc., deliver a presentation on Superpave Mix Designs, test methods and how the results are incorporated in the final Job Mix Formula. Presentation delivered on Nov. 7, 2019 at the California Asphalt Pavement Association Fall Asphalt Pavement Conference in Sacramento, Calif.
Cast in-situ concrete is the most frequently used material worldwide in the multi-storey residential buildings. Conventional concrete (CC) casting relies on compaction to ensure adequate strength and durability. Inadequate compaction affects the quality and durability of concrete structures.
Self compacting concrete (SCC) was first developed in Japan in 1986 as a quality assurance concept to address the issues like long production times, unhealthy work environment
Effect of air void on dense graded bituminous mixAvinash Bhosale
SEMINAR FOR effect of air voids on dense graded bituminous mix.
MATERIALS USE FOR NATIONAL HIGHWAY.
such as Dense bituminous macadam.
air voids in road pavement and how to analyse it.
At the California Asphalt Pavement Association (CalAPA) Spring “Technical Tune-Up” Educational Workshop held April 5, 2022 in Brea, a presentation titled, "Superpave Mix Design – What Agencies Need to Know" was delivered by
Dave Aver, QC Associate (ret), City of Santa Rosa.
In 2015, Caltrans adopted the “Superpave” mix design methodology for asphalt pavements. This session will
provide an overview of the Superpave method and provide the difference to the Hveem mix design methodology.
The Study of Water Stability for SBS and Polyacrylate Composite Modified Asph...IJERA Editor
Polyacrylate (Polyacrylate, called PAE) is a kind of thermoplastic polymer latex, which is easy to form a waterproof membrane and has greater adhesion ,always be used in concrete to enhance its ability to resist water corrosion.SBS is an inorganic modifier for modified asphalt mixture will help to improve the high and low temperature stability and other road performance, ect.However,its ability to enhanced asphalt mixture’s resistance for water damage is not obvious. In order to research the two composite modified asphalt mixture’s resistance effects to water damage , the Marshall Stability Test and Fort Kentucky Flooding Scattering Experiments were used on asphalt mixtures, SBS modified asphalt mixture and composite modified asphalt mixture and the effect of different composite modified PAE content were studied. The results showed that: PAE can significantly improve the water stability of asphalt mixture, what’s more, with the increase use of PAE,the mass loss rate of asphalt mixture decreases steadily.
Dave Aver, City of Santa Rosa, and Greg Reader, George Reed Inc., deliver a presentation on Superpave Mix Designs, test methods and how the results are incorporated in the final Job Mix Formula. Presentation delivered on Nov. 7, 2019 at the California Asphalt Pavement Association Fall Asphalt Pavement Conference in Sacramento, Calif.
Cast in-situ concrete is the most frequently used material worldwide in the multi-storey residential buildings. Conventional concrete (CC) casting relies on compaction to ensure adequate strength and durability. Inadequate compaction affects the quality and durability of concrete structures.
Self compacting concrete (SCC) was first developed in Japan in 1986 as a quality assurance concept to address the issues like long production times, unhealthy work environment
In the recent years, the rapid growths of population and industrialization levels have been
resulted in increased for demand of transportation. In addition, this growth increases the traffic loads
which cause several pavement distresses such as rutting. Several trials were made to control
pavement rutting by mix enhancement. These trials were already limited pavement rutting, but on the
other hand showed pavement cracking as a result of lower flexibility for the modified pavements.
This study aims at investigating the effect of crumb rubber on the characteristics of asphalt mixes. To
achieve this objective, crumb rubber with different percentages of fine aggregate (0, 4, 8, 12, 16, 20,
24 and 28%) were used to manufacture the investigated asphalt mixes. Marshall designs were used to
obtain the optimum asphalt contents and the corresponding characteristics of the investigated mixes.
Other mix characteristics including Marshall stiffness, loss of stability, tensile strength as well as
rutting resistance were measured for the investigated mixes. Loss of stability test, indirect tensile test
(ITT) and wheel tracking test (WTT) were conducted to measure these characteristics. Analyzing the
study results showed that, the use of crumb rubber has a noticeable effect on the characteristics of
asphalt mixes. It is noticed that, the use of rubber percent up to 16% by weight of fine aggregate
increases the pavement resistance to cracking and does not greatly affect the pavement resistance to
rutting.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
The effect of aggregate density on pavement performance of SMA-13 asphalt mix...IJERA Editor
This paper chooses the top layer SMA-13 asphalt mixture material as the research object. Basalt was selected as
pavement material, and modified SBS asphalt was used as a cementing material. Two basalt aggregates with
different densities were used to carry out standard Marshall test in the laboratory.Aimed at the volume
parameters of the asphalt mixture carry on anaiysis,and obtian the effect of aggregate density on pavement
performance of SMA-13 asphalt mixture, which is that the density of aggregate has a significant effect on the
void ratio, saturation, and the gap rate of the aggregate, thus affecting the pavement performance of the asphalt
mixture
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/
In the recent years, the rapid growths of population and industrialization levels have been
resulted in increased for demand of transportation. In addition, this growth increases the traffic loads
which cause several pavement distresses such as rutting. Several trials were made to control
pavement rutting by mix enhancement. These trials were already limited pavement rutting, but on the
other hand showed pavement cracking as a result of lower flexibility for the modified pavements.
This study aims at investigating the effect of crumb rubber on the characteristics of asphalt mixes. To
achieve this objective, crumb rubber with different percentages of fine aggregate (0, 4, 8, 12, 16, 20,
24 and 28%) were used to manufacture the investigated asphalt mixes. Marshall designs were used to
obtain the optimum asphalt contents and the corresponding characteristics of the investigated mixes.
Other mix characteristics including Marshall stiffness, loss of stability, tensile strength as well as
rutting resistance were measured for the investigated mixes. Loss of stability test, indirect tensile test
(ITT) and wheel tracking test (WTT) were conducted to measure these characteristics. Analyzing the
study results showed that, the use of crumb rubber has a noticeable effect on the characteristics of
asphalt mixes. It is noticed that, the use of rubber percent up to 16% by weight of fine aggregate
increases the pavement resistance to cracking and does not greatly affect the pavement resistance to
rutting.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
The effect of aggregate density on pavement performance of SMA-13 asphalt mix...IJERA Editor
This paper chooses the top layer SMA-13 asphalt mixture material as the research object. Basalt was selected as
pavement material, and modified SBS asphalt was used as a cementing material. Two basalt aggregates with
different densities were used to carry out standard Marshall test in the laboratory.Aimed at the volume
parameters of the asphalt mixture carry on anaiysis,and obtian the effect of aggregate density on pavement
performance of SMA-13 asphalt mixture, which is that the density of aggregate has a significant effect on the
void ratio, saturation, and the gap rate of the aggregate, thus affecting the pavement performance of the asphalt
mixture
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/
TECHNICAL TRAINING MANUAL GENERAL FAMILIARIZATION COURSEDuvanRamosGarzon1
AIRCRAFT GENERAL
The Single Aisle is the most advanced family aircraft in service today, with fly-by-wire flight controls.
The A318, A319, A320 and A321 are twin-engine subsonic medium range aircraft.
The family offers a choice of engines
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.
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.
Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
For more technical information, visit our website https://intellaparts.com
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
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.
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.
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.
1. GENERAL OBJECTIVE
TO DETERMINE, WITHIN THE LIMITS OF THE
PROJECT SPECS., A COST EFFECTIVE BLEND
AND GRADATION OF AGGREGATES AND
ASPHALT CEMENT THAT WILL GIVE LONG
LASTING PERFORMANCE AS PART OF THE
PAVEMENT STRUCTURE.
2. SPECIFIC OBJECTIVE
TO PRODUCE A MIX HAVING:
Sufficient Asphalt
Sufficient Mix Stability
Sufficient Voids
A Maximum Void Content
A Sufficient Workability
Proper Aggregate Texture and Hardness
3. MIX TYPE SELECTION
Surface Course Mixtures
Binder Course Mixtures
Base Course Mixtures
Sand Asphalt Mixtures
10. PROPORTIONING AGGREGATE & ASPHALT
• Percent by Weight of Total Mixture
• Percent by Weight of Total Dry Aggregate
11. TESTING METHODS
(a) ASPHALT CEMENT
Penetration D 5 T 49
Viscosity
Absolute D 2171 T 202
Kinematic D 2170 T 201
Flash Point D 92 T 48
Thin Film Oven Test D 1754 T 179
Rolling Thin Film
Oven Test D 2872 T 240
Ductility D 113 T 51
Solubility D 2042 T 44
Specific Gravity D 70 T 228
ASTM
Designation
AASHTO
Designation
12. TESTING METHODS
(b) MINERAL AGGREGATES
Los Angeles Abrasion C 131 T 96
or C535
Unit Weight C 29 T 19
Sieve Analysis (Aggregates) C 136 T 27
Sieve Analysis (Filler) D 546 T 37
Specific Gravity (Coarse) C 127 T 85
Specific Gravity (Fine) C 128 T 84
Specific Gravity (Filler) D 854 T 133
or C 188 or T 133
Sulfate Soundness C 88 T 104
Sand Equivalent D 2419 T 176
Particle Shape D4791
ASTM
Designation
AASHTO
Designation
13. TESTING METHODS
(c) HOT MIX ASPHALT
Asphalt Content (Extraction) D 2172 T 164
Asphalt Content (Nuclear) D 4125 T 287
Recovery of Asphalt D 1856 T 170
Density & Voids Analysis
Maximum Specific Gravity of
Paving Mixtures D 2041 T 209
Bulk Specific Gravity D 1188 T 166
or D 2726
ASTM
Designation
AASHTO
Designation
14. PREPARATION OF TEST MIXES
WEIGHING AGGREGATES
FOR BATCH MIXES
HEATING AGGREGATE BATCHES
IN OVEN
15. PREPARATION OF TEST MIXES
ADDING ASPHALT CEMENT
TO HEATED AGGREGATES
MECHANICAL MIXER FOR BATCH MIXING
OF ASPHALT & AGGREGATES
16. ANALYZING AGGREGATE FOR PRELIMINARY
MIX DESIGN
AGGREGATE ANALYSIS FOR JOB MIX FORMULA
17. (1) Dry all aggregates to constant weight at 110 °C
(2) Perform washed sieve analysis and specific gravity test.
(3) Compute a blend of aggregates to produce the desired
mix gradation.
(4) Separate each dried aggregate into fractions
(5) Compute the batch weights of the sized aggregate and
filler required.
(6) Prepare mix design test specimen.
ANALYZING AGGREGATE FOR PRELIMINARY MIX
DESIGN
18. AGGREGATE ANALYSIS FOR JOB MIX FORMULA
(1) Secure representative sample from each stockpile
(2) Dry all aggregates to constant weight
(3) Perform washed sieve analysis & specific gravity test
(4) Compute the blend of aggregates
(5) Adjust the cold feeder controls
(6) Perform a washed sieve analysis on hot bin samples
(7) Compute batch weights of the sized aggregates
(8) Prepare test specimens of the design mix
(9) Adjust plant controls, if necessary
(10)Verify aggregate gradation
19.
20.
21.
22. TERMINOLOGY
(1) Bulk Specific Gravity, Gsb
(2) Apparent Specific Gravity, Gsa
(3) Effective Specific Gravity, Gse
(4) Voids in Mineral Aggregates,
VMA
(5) Effective Asphalt Content, Pbe
(6) Air Voids, Va
(7) Voids Filled w/ Asphalt, VFA
23. PROCEDURE FOR ANALYZING A COMPACTED
PAVING MIXTURE
Measure the bulk specific gravities of the coarse and fine
aggregate
Measure the specific gravity of the asphalt cement and of the
mineral filler
Calculate the bulk specific gravity of the aggregate combination
in the paving mixture
Measure the maximum specific gravity of the loose paving
mixture
Measure the bulk specific gravity of the compacted paving
mixture
24. PROCEDURE FOR ANALYZING A COMPACTED
PAVING MIXTURE
Calculate the effective specific gravity of the aggregate
Calculate the asphalt absorption of the aggregate
Calculate the effective asphalt content of the paving mixture
Calculate the percent voids in the mineral aggregate in the
compacted paving mixture
Calculate the percent air voids in the compacted paving
mixture
