This document provides an overview of fiber reinforced polymer (FRP) composites, including common fiber and resin types, manufacturing processes, applications, and FDOT specifications and initiatives. It describes pultrusion and vacuum infusion as the predominant manufacturing processes, lists national design specifications, and outlines accepted FDOT applications such as structural shapes, reinforcing bars, prestressing strands, and bridge projects using FRP composites.
FIBRE REINFORCED PLASTIC (FRP) & SYNTHETIC RUBBERChandana R
FIBRE REINFORCED PLASTIC (FRP)
A type of plastic in which the strength of low strength plastic
material is increased by means of high strength of fibers.
COMPOSITION, USE, TYPES, PROPERTIES, APPLICATIONS, ADVANTAGES, DIS-ADVANTAGES
SYNTHETIC RUBBER
A man-made rubber which is produced in
manufacturing plants by synthesizing it from petroleum and other minerals.
USES, PROPERTIES, APPLICATIONS, ADVANTAGES, DIS-ADVANTAGES
Fiber Reinforced Polymer (Frp) Composites Rebar Steven Tyler
Mission - Promote the use and growth of FRP reinforcement (rebar, tendons & grids) in concrete and masonry applications through development of quality procedures, industry specifications, performance standards, and field application guidelines.
http://www.bpcomposites.com/
FIBRE REINFORCED PLASTIC (FRP) & SYNTHETIC RUBBERChandana R
FIBRE REINFORCED PLASTIC (FRP)
A type of plastic in which the strength of low strength plastic
material is increased by means of high strength of fibers.
COMPOSITION, USE, TYPES, PROPERTIES, APPLICATIONS, ADVANTAGES, DIS-ADVANTAGES
SYNTHETIC RUBBER
A man-made rubber which is produced in
manufacturing plants by synthesizing it from petroleum and other minerals.
USES, PROPERTIES, APPLICATIONS, ADVANTAGES, DIS-ADVANTAGES
Fiber Reinforced Polymer (Frp) Composites Rebar Steven Tyler
Mission - Promote the use and growth of FRP reinforcement (rebar, tendons & grids) in concrete and masonry applications through development of quality procedures, industry specifications, performance standards, and field application guidelines.
http://www.bpcomposites.com/
Fibre Reinforced Plastic manufacturing methodsjeff jose
Composites manufacturing processes are complex, and involve combinations of the following physical processes:
1) Reinforcement Shaping
2) Resin Infusion
3) Composite Consolidation
Advantages and disadvantages of processing techniques
plastic composite manufacturing
Hand Lay-up
Spray up method
Filament winding
Match die molding
Pultrusion
Resin transfer molding
Reaction injection molding
Hand Lay-Up is well suited for low volume production of product.
This method can be used for both corrosion barrier and the structural portion
Fiber is chopped in a hand-held gun and fed into a spray of catalyzed resin directed at the mold. The deposited materials are left to cure under standard atmospheric conditions.
Fiber reinforced concrete - Fibers types and properties, Behavior of FRC in compression, tension including pre-cracking stage and post-cracking stages, behavior in flexure and shear.
Strengthening structures via external bonding of advanced fibre reinforced polymer (FRP) composite is becoming very
popular worldwide during the past decade because it provides a more economical and technically superior alternative
to the traditional techniques in many situations as it offers high strength, low weight, corrosion resistance, high fatigue
resistance, easy and rapid installation and minimal change in structural geometry. Although many in-situ RC beams
are continuous in construction, there has been very limited research work in the area of FRP strengthening of continuous
beams.
Repair & Rehabilitation of Concrete Structures Using FRP CompositesParvez Ahmad Hashmat
Fiber-reinforced polymers are furthermore referred to as materials known as composites.
They are produced by a mixture of two or more basic or parent materials to make and form an enriched compound having upgraded properties.
Generally, FRP materials contain high strength fibers as (carbon, glass, or aramid )with an enriched polymer resin(vinyl ester, epoxy or polyester thermosetting plastic..), whereas the enriched fibers act, as the key reinforcing element, where the polymer resin or polymer matrix works as a holding or binder which transfers loads between fibers and protects fibers.
An insight to modern material used in aircraft and automobile known for its low weight and high strength. This gives an understanding of carbon fiber reinforced plastics(CFRP), its properties, applications, processing technologies.
Behaviour of fresh and hardened concretekavithamegha
This PPT discusses the structure and properties of concrete making materials. This is followed by hydration of cement, porosity of cement pastes and a study of selected topics regarding fresh and hardened concrete behaviour.
1. To understand the different complex compounds in cement.
2. Study the behavior of concrete with the fundamental interactions between ingredients
3. Fundamental understanding of the mechanism governing concrete performance.
4. Demonstrating the porosity of cement paste and elastic modulus.
5. Dramatize the rheology of concrete in terms of Bingham’s parameter.
Structural strengthening, restoring and adding capacity is an integral part of today’s concrete repair industry. Structural strengthening may be required for increasing load capacity of beams, columns, walls, and/or slabs, seismic retrofitting, supporting additional live or dead loads not included in original design, to relieve stresses generated by design or construction errors, or to restore original load capacity to damaged structural elements.
Fibre Reinforced Plastic manufacturing methodsjeff jose
Composites manufacturing processes are complex, and involve combinations of the following physical processes:
1) Reinforcement Shaping
2) Resin Infusion
3) Composite Consolidation
Advantages and disadvantages of processing techniques
plastic composite manufacturing
Hand Lay-up
Spray up method
Filament winding
Match die molding
Pultrusion
Resin transfer molding
Reaction injection molding
Hand Lay-Up is well suited for low volume production of product.
This method can be used for both corrosion barrier and the structural portion
Fiber is chopped in a hand-held gun and fed into a spray of catalyzed resin directed at the mold. The deposited materials are left to cure under standard atmospheric conditions.
Fiber reinforced concrete - Fibers types and properties, Behavior of FRC in compression, tension including pre-cracking stage and post-cracking stages, behavior in flexure and shear.
Strengthening structures via external bonding of advanced fibre reinforced polymer (FRP) composite is becoming very
popular worldwide during the past decade because it provides a more economical and technically superior alternative
to the traditional techniques in many situations as it offers high strength, low weight, corrosion resistance, high fatigue
resistance, easy and rapid installation and minimal change in structural geometry. Although many in-situ RC beams
are continuous in construction, there has been very limited research work in the area of FRP strengthening of continuous
beams.
Repair & Rehabilitation of Concrete Structures Using FRP CompositesParvez Ahmad Hashmat
Fiber-reinforced polymers are furthermore referred to as materials known as composites.
They are produced by a mixture of two or more basic or parent materials to make and form an enriched compound having upgraded properties.
Generally, FRP materials contain high strength fibers as (carbon, glass, or aramid )with an enriched polymer resin(vinyl ester, epoxy or polyester thermosetting plastic..), whereas the enriched fibers act, as the key reinforcing element, where the polymer resin or polymer matrix works as a holding or binder which transfers loads between fibers and protects fibers.
An insight to modern material used in aircraft and automobile known for its low weight and high strength. This gives an understanding of carbon fiber reinforced plastics(CFRP), its properties, applications, processing technologies.
Behaviour of fresh and hardened concretekavithamegha
This PPT discusses the structure and properties of concrete making materials. This is followed by hydration of cement, porosity of cement pastes and a study of selected topics regarding fresh and hardened concrete behaviour.
1. To understand the different complex compounds in cement.
2. Study the behavior of concrete with the fundamental interactions between ingredients
3. Fundamental understanding of the mechanism governing concrete performance.
4. Demonstrating the porosity of cement paste and elastic modulus.
5. Dramatize the rheology of concrete in terms of Bingham’s parameter.
Structural strengthening, restoring and adding capacity is an integral part of today’s concrete repair industry. Structural strengthening may be required for increasing load capacity of beams, columns, walls, and/or slabs, seismic retrofitting, supporting additional live or dead loads not included in original design, to relieve stresses generated by design or construction errors, or to restore original load capacity to damaged structural elements.
Carbon Fiber Reinforced Polymer (CFRP) strengthening of existing concrete beam shear cracks supporting heavy equipment. The root cause of the shear cracks is incorrect design analysis with slender beam theory for deep beam.
Reinforced arches have a wide range of applications. This paper discuss about use of fibre reinforced polymer (FRP) for strengthening of reinforced concrete arches. The experiment is conducted on shallow arches. Three arches are tested. One is used as a control arch while other two are strengthened using FRP strips in different patterns. Six non symmetric point loads are equally spaced along the arches. The arch is modelled as a polygon.
Repair and Retrofit on Beam and Column Jointsamerald24
A research experiment has been conducted on the structural performance of repaired minor damaged reinforced concrete beam and column Joints using composite known as CFRP (Carbon Fiber Reinforced Polymer) under simulated cyclic 2D loadings to find the practical lamination repair scheme for flexural strengthening, shear strengthening, and joint strengthening.
RoadstaB Bar is an innovation in reinforcement industry. This material is non-corrosive, light in weight and higher in strength in comparison to conventional steel armature. .
Strengthening structures via external bonding of advanced fibre reinforced polymer (FRP)
composite is becoming very popular worldwide during the past decade because it provides a more
economical and technically superior alternative to the traditional techniques in many situations as it
offers high strength, low weight, corrosion resistance, high fatigue resistance, easy and rapid
installation and minimal change in structural geometry. Although many in-situ RC beams are
continuous in construction, there has been very limited research work in the area of FRP
strengthening of continuous beams. In the present study an experimental investigation is
carried out to study the behavior of continuous RC beams under static loading. The beams are
strengthened with externally bonded glass fibre reinforced polymer (GFRP) sheets. Different scheme
of strengthening have been employed. The program consists of fourteen continuous (two-span) beams
with overall dimensions equal to (150×200×2300) mm. The beams are grouped into two series
labeled S1 and S2 and each series have different percentage of steel reinforcement. One beam from
each series (S1 and S2) was not strengthened and was considered as a control beam, whereas all
other beams from both the series were strengthened in various patterns with externally bonded GFRP
sheets. The present study examines the responses of RC continuous beams, in terms of failure modes,
enhancement of load capacity and load deflection analysis. The results indicate that the flexural
strength of RC beams can be significantly increased by gluing GFRP sheets to the tension face. In
addition, the epoxy bonded sheets improved the cracking behaviour of the beams by delaying the
formation of visible cracks and reducing crack widths at higher load levels. The experimental results
were validated by using finite element method
Welcome to International Journal of Engineering Research and Development (IJERD)IJERD Editor
journal publishing, how to publish research paper, Call For research paper, international journal, publishing a paper, IJERD, journal of science and technology, how to get a research paper published, publishing a paper, publishing of journal, publishing of research paper, reserach and review articles, IJERD Journal, How to publish your research paper, publish research paper, open access engineering journal, Engineering journal, Mathemetics journal, Physics journal, Chemistry journal, Computer Engineering, Computer Science journal, how to submit your paper, peer reviw journal, indexed journal, reserach and review articles, engineering journal, www.ijerd.com, research journals,
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1. FRPs are being planned in the potential rehabilitation of a slab-on-girder bridge. The bridge is a one-way slab supported by prestressed concrete girders. Make a recommendation for what type of FRP (e.g., fibre and resin) would be appropriate.
2. Eight different unidirectional FRPs (4 with a fibre volume fraction of 70% and 4 with a fibre volume fraction of 35%) are going to be fabricated. For each FRP, find the modulus in both the fibre direction and the direction perpendicular to the fibres and sketch the stress-strain curve for each FRP.
3. Using the S806 design standard for a building application, calculate the factored moment resistance, Mr, in positive bending, for the precast (φc = 0.70) FRP-reinforced concrete
Frgc products for_undergound_infrastructure
An investigation was conduced to achieve concrete of higher strength using crushed brick as aggregate and study the mechanical properties. It was found that higher strength concrete (cf= 4500 to 6600 psi1) with brick aggregate is achievable whose strength is much higher than the parent uncrushed brick. Test results show that the compressive strength of brick aggregate concrete can be increased by decreasing its water-cement ratio and using admixture whenever necessary for workability. The compressive strength as well as the tensile strength and the modulus of elasticity of the concrete were studied. The cylinder strength is found about 90% of the cube strength. The ACI Code relations for determining the modulus of rupture was found to highly underestimate the test values., whereas the code suggested expression for elastic modulus gives much higher values than the experimental ones for brick aggregate concrete. Relations were proposed to estimate the modulus of rupture and the modulus of elasti
It's all about recent road trip done in an electric scooter covering 348kms experiencing the nature answering people's perceptions.
I would encourage everyone to adapt to pollution-free commute.
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.
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
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
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
Contact with Dawood Bhai Just call on +92322-6382012 and we'll help you. We'll solve all your problems within 12 to 24 hours and with 101% guarantee and with astrology systematic. If you want to take any personal or professional advice then also you can call us on +92322-6382012 , ONLINE LOVE PROBLEM & Other all types of Daily Life Problem's.Then CALL or WHATSAPP us on +92322-6382012 and Get all these problems solutions here by Amil Baba DAWOOD BANGALI
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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.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
Vaccine management system project report documentation..pdfKamal Acharya
The Division of Vaccine and Immunization is facing increasing difficulty monitoring vaccines and other commodities distribution once they have been distributed from the national stores. With the introduction of new vaccines, more challenges have been anticipated with this additions posing serious threat to the already over strained vaccine supply chain system in Kenya.
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.
2. Topics Covered
Overview of FRP Composites
Currently Available National Specifications
FDOT Design Criteria and Specifications
Acceptable FDOT Applications
Research on FRP Composites
District 7 Demonstration Project
Chase Knight, PhD - Usage (Characteristics/Durability)
Questions
2
3. FRP Overview: What is FRP?
General Composition
Carbon, Glass, Etc.
Polymer
3
4. FRP Overview: Fibers
Common Fiber Types:
Aramid
- Extremely sensitive to environmental conditions
Glass (Most Widely Used)
- Subject to creep under high sustained loading
- Subject to degradation in alkaline environment
Carbon
- Premium Cost
Basalt
- The future of FRP fibers?
4
5. FRP Overview: Fibers
Used in many different forms:
Short Fibers
Long Fibers
Chopped Fibers
Woven Fibers
5
6. FRP Overview: Resins
Two Categories:
Thermoset Resins (most common for structural uses)
- Liquid state at room temperature prior to curing
- Impregnated into reinforcing fibers prior to heating
- Chemical reaction occurs during heating/curing
- Solid after heating/curing; Can’t be reversed/reformed
Thermoplastic Resins
- Solid at room temperature (recycled plastic pellets)
- Heated to liquid state and pressurized to impregnate
reinforcing fibers
- Cooled under pressure; Can be reversed/reformed
6
7. FRP Overview: Resins
Common Thermoset Resin Types
Polyester
- Lowest Cost
Vinyl ester
- Industry Standard
Polyurethane
- Premium Cost
Epoxy
- Highest Cost
- Commonly used in aerospace applications
7
8. Polyesters
Advantages:
- Easy to use
- Lowest cost of resins available
Disadvantages:
- Sensitive to UV degradation
- Only moderate mechanical properties
FRP Overview: Resins
8
9. Vinyl esters
Advantages:
- Very high chemical/environmental resistance
- Higher mechanical properties than polyesters
Disadvantages:
- Sensitive to heat
- Higher cost than polyesters
FRP Overview: Resins
9
10. Polyurethanes
Advantages:
- Higher strength and flexibility than vinyl esters
- Very high chemical/environmental resistance
- Higher mechanical properties than vinyl esters
Disadvantages:
- Higher cost than vinyl esters (about 1.5 x)
FRP Overview: Resins
10
11. Epoxies
Advantages:
- High mechanical and thermal properties
- High moisture resistance
- Long working times available
- High temperature resistance
Disadvantages:
- More expensive than polyurethanes
- Critical mixing/Consistency
- Corrosive handling
FRP Overview: Resins
11
13. FRP Overview: Processes
Pultrusion Processing:
Linear, continuous process
Reinforcing (Roving & Mats) saturated with resin
Pulled through heated die
Chemical reaction occurs as it cures (Polymerization)
The resin saturated reinforcements exit the die in a solid
state and in the form of the cross section of the die.
Types of products produced:
- Structural shapes w/ constant cross-sections
- GFRP/CFRP reinforcing bars & CFRP prestressing bars
13
15. Courtesy of: Creative Pultrusions, Inc.
Continuous Strand Mats: Reinforcements in
any direction; consistent along the length of
the member.
FRP Overview: Processes
Pultrusion Processing:
15
17. Courtesy of: Creative Pultrusions, Inc.
• Various Pultruded Structural Shapes
FRP Overview: Processes
17
18. Courtesy of: Hughes Brothers, Inc.
• Pultruded GFRP/CFRP reinforcing bars and dowels
FRP Overview: Processes
GFRP = Glass FRP
CFRP = Carbon FRP
Courtesy of: Hughes Brothers, Inc.
18
19. FRP Overview: Processes
Vacuum Infusion (VIP)
Reinforcing laid dry into the mold
Vacuum is pulled before resin is introduced
Resin is then sucked into the laminate via distributed
tubing
Types of products:
- Structural shapes:
– Uniform cross-sections
– Non-uniform cross-sections
19
20. FRP Overview: Processes
Vacuum Infusion (VIP)
Benefit of VIP:
Reinforcing fibers oriented in
any direction at specific and
targeted locations.
20
23. National Specifications
LRFD Design
Specification for FRP
Pultruded Structures
Structural shapes
Connections
Prefabricated building
products
Symmetric and balanced
glass fiber reinforcing only
23
24. National Specifications
ANSI Code of Standard
Practice
Pultruded FRP Structures
Recommendations for:
Construction Contract
Documents
Fabrication
Installation
24
25. National Specifications
For the design and
construction of concrete
bridge decks and railings
reinforced with GFRP
reinforcing bars.
For GFRP bars only:
Deformed or Sand
Coated only
See additional
limitations
25
26. For the analysis and
design of concrete-filled
FRP tubes (CFFT) for use
as structural components
in bridges
For CFFT use as:
Beams
Arches
Columns
Piles
National Specifications
26
27. National Specifications
ACI 440 Series:
FRP Reinforcement
for Concrete
Materials, Design and
Construction
Specifications
ASTM is currently
being developed to
replace the materials
specifications for FRP
reinforcing
27
29. FDOT Specifications
FRP Composite Reinforcing:
Dev. 932: FRP Reinforcing Bar (2014)
Dev. 933: FRP Strand (2014)
Dev. 400, 415, 450, 105 for FRP Reinforcing (2014)
The draft versions currently reference ACI 440 and
modifies it to be incompliance with the latest draft of the
ASTM. Will reference the new ASTM once ACI 440 is
replaced.
FDOT Design Criteria & Specifications
29
30. New Materials Manual Chapter 12
Included in the July 2014 Workbook
Requirements for Quality Control (QC) Programs for FRP
Composite Producers
Must obtain FRP Composites from a producer that is
currently on the list of Producers with Accepted Quality
Control (QC) Programs for Fiber Reinforced Polymer
(FRP) Composites
All FRP Composites must meet the minimum
requirements of the applicable material specifications
FDOT Design Criteria & Specifications
30
31. New Structure Manual, Volume 4
Scheduled for release with the 2015 Structures Manual
Guidance on acceptable uses for FRP Composites
Guidance on how to incorporate FRP Components into
the Contract Documents
Provides Design Guidelines and appropriate references
to the applicable National Specifications
Guidance for preparation of Specifications Package
FDOT Design Criteria & Specifications
31
34. FDOT FRP Initiatives:
Fender System Piles and Wales
FDOT 471 & 973 spec.
New Approved Fabricators List requirements through
MM 12.1 (July 2014)
Revised SDG Section 3.14 (Jan 2015)
New Structure Detailing Manual Chapter 24 (Jan
2015)
Courtesy of: Creative Pultrusions, Inc.
34
35. FDOT FRP Initiatives:
Composite Beams
Hillman Composite Beam
- constructed as a composite of three materials: steel strands,
concrete, and fiber reinforced polymer
- materials are arranged in a manner that the materials act as what
would traditionally be separate structural elements
- District 7 (Halls River Project)
35
36. Demonstration Project in District 7:
CR490A bridge replacement over Halls River
Bridge Length = 185’-10” total
5 spans @ 37’-2”
Overall Bridge Width = 56’-9 3/4”
Hybrid Composite Beams (Hillman Beam) = 11 beams @ 5’-3”
24” Prestressed concrete piles w/CFRP strands and spirals
Concrete seawalls replacement using GFRP & CFRP reinforcement
Phased construction
Extremely aggressive environment for both superstructure &
substructure
D7 Halls River Project
36
43. M.H. Ansley Structures Research Center
Recent Testing on FRP Composites
GFRP Reinforced Thermoplastic Piles and Wales
VIP Composite Bridge Decking
Pultruded Light Poles
- Breakaway Pole Bases
Prestressed Concrete Piles using CFCC
Post Tensioned Box Girder using CFCC
Mast Arm/Light Pole repair using CFRP Wraping
Research
43
46. Research
Leading Researcher on FRP
Reinforcing and Prestressing
Dr. Brahim Benmokrane, P. Eng., FACI,
FCSCE, FIIFC, FCAE, FEIC
- FRP-ACI Committee Member
- Professor of Civil Engineering-Fellow of
the Royal Society of Canada
- Tier-1 Canada Research Chair in
Advanced Composite Materials for Civil
Structures
- NSERC/Industry Research Chair in
Innovative FRP Reinforcement for
Concrete Infrastructure
- Director, Quebec-FQRNT Research
Centre on Concrete Infrastructure
(CRIB)
46
47. Usage (Characteristics/Durability)
Characteristics
PROS
- It is highly resistant to chloride ion and chemical attack
- Its tensile strength is greater than that of steel yet it weighs only one quarter as much
- It is transparent to magnetic fields and radar frequencies
- GFRP has low electrical and thermal conductivity
CONS
- Due to its inelastic behavior design codes significantly reduce the allowable stress
capacity
- Due to the manufacturing processes the industry is undergoing progressive
standardization
- Storage and handling requirements for FRP reinforcing on the construction site can be
more restrictive due to FRP's susceptibility to damage by overexposure to UV light,
improper cutting or aggressive handling.
- The initial cost of the FRP reinforcing is considerably higher than traditional steel
reinforcing
49. Usage (Characteristics/Durability)
Degradation factors
Moisture
- Diffusion through matrix
- Flow through cracks or other flaws
- Transportation medium for alkali/acid/salt
Alkali
- Attacks silica network in glass – “etching and
leaching”
GangaRao et al. Reinf. concr. des. with compos. CRC Press (2007)
50. Usage (Characteristics/Durability)
Degradation factors
Acids
- Hydrogen replaces alkali and other positive mobile
ions in glass – “leaching”
Salts
- Similar to acids
Temperature
- Affects rate of moisture absorption and chemical
reactions
GangaRao et al. Reinf. concr. des. with compos. CRC Press (2007)
51. Usage (Characteristics/Durability)
Materials and processing
Improvements made in material selection
- Polyester to Vinyl Ester (less moisture absorption)
- E glass to E-CR glass fibers (less leaching)
Spoo, ACMA Chemical Processing Symposium (2013)
57. Usage (Characteristics/Durability)
Long term durability of GFRP
Establish model(s) to accurately describe the
degradation of GFRP based on the synergistic effects
of physical and chemical aging on fibers, matrix and
interface
Establish protocol for service life prediction based on
the model(s)
58. Usage (Characteristics/Durability)
Durability of CFRP
Carbon fibers are highly stable, even in aggressive
environments
Knight et al. Environmental Technology 33, 639-644 (2012)
Fibers from carbon/epoxy composite treated for
2 hours in 0.05 M KOH solution at 770°F, 4200 psi
Individual fibers maintained 100% tensile strength
59. FDOT Resources
Structures Design Office:
A. Jordan Thomas, P.E. (FDOT Policy/Standards)
Gevin McDaniel, P.E. (FDOT Policy/Standards)
Sam Fallaha, P.E. (FDOT Research/Testing)
Will Potter, P.E. (FDOT Research/Testing)
Materials Office:
Chase Knight, PhD (Materials/Durability)
60. Composites and Advanced Materials Expo
October 13-16, 2014
Orange County Convention Center
Orlando, FL
www.thecamx.org