State
The first commercial use of
FRP composite armor is twenty years old. These initial applications were
non-magnetic or radio frequency transparent confirmation of magnetic resonance
imaging (MRI), medical equipment and specialized military applications. FRP composite
armor has become the industry standard for this application, replacing the
stainless steel in recent years. Interesting parallel in Europe and Japan have
helped to make FRP composite reinforcement of international study.
In addition, the Manufacturers
Council of FRP rebar (President: Doug Gremel) was created by those vendors
placed in the "contact points" with the aim of promoting quality
assurance and other industry standards among manufacturers .
Canadian Highway Bridge
Competition Code, CSA - S6-06 now contains provisions which allow the use of
GFRP rebar. Thus, a series of bridges built in Canada, more routine. The
largest of these projects so far is "Floodway Bridge" near Winnipeg.
This is an important bridge for all indicators, but more for the fact that it
was built "without the steel bridge," The concept of using all GFFRP
bars in concrete above the bar.
Obstacles
The cost of FRP reinforcing
bars in ft / $ is usually greater than conventional steel reinforcement. Carbon
FRP is generally more expensive than the GFRP. Click here to find a detailed
catalog of the cost of FRP rebar. Note that you cannot make a direct
replacement of the steel bars on the principles of the design guide FRP
appropriate. In general, the cost impact of FRP bars in the bridge deck is just
for the increased cost of the bridge with something on the order of 2 to 5%
nowadays. Therefore, using FRP bars and potentially get many more years of
service cannot be an expensive alternative.
* The price is $ 3 to 4/lb
(including approx. 1/lb $ cost of raw materials) in the case of Glass FRP and
carbon FRP bar is generally more expensive. (See cost epoxy coated rebar $
0.32/lb)
3R-04 issued to support the
ACI 440 design wizards, with the understanding that in time, these test methods
will be the transition to more formal body ASTM. The document is available from
ACI provides engineering and practicing with the information needed to
implement these new FRP bars. This transition is occurring and documents, such
as ASTM D7205 now describe test methods for determining the tensile properties,
modulus and strain of FRP bars. Several other test methods are also being
printed in the format ASTM consensus review.
* Due to the lack of
established standards, a wide variety of FRP bars are now marketed, ranging
from simple plain bars bar tried to improve the characteristics of bonds.
Therefore, a better understanding of the mechanical properties and bond
behavior is necessary for a rational approach for the design of FRP-reinforced
structures.
* Field of the curves are not
allowed, and not welded, so that differences in the operations of carbon steel
rebar construction should be applied in the design stage.
* Lack of familiarity of
engineers can cause a decrease in productivity of exploration.
Contact Us:
FRP Distributors Inc.
14540 – 115 Avenue
Edmonton, Alberta, Canada T5M
3B9
Toll Free: 1-877-455-5105
Main Phone: 1-780-455-5105
Main Fax: 1-780-455-5140
