GFRP REBAR
Corrosion of internal reinforcing steel is one of the chief causes of failure of
concrete structures. Inevitably concrete will crack, creating a direct avenue for chlorides to begin
oxidizing the steel rebar. Glass Fiber Reinforced Polymers (GFRP’s) are a proven and successful
alternative reinforcing that will give structures a longer service life.
ibre reinforced reinforcement bar is made from high strength glass fibre reinforced with vinyl ester
resin. The core of the rebar has all the reinforcing fibre (70% by weight) along the length of the bar
for maximum strength. A helically recess in the surface of the rebar is created in the production
process which does not damage the core fibre and is sufficiently deep to give a key to enable the
concrete to have a mechanical grip on the rebar. In general: GFRP reinforcing bar has higher
tensile strength and higher corrosion resistance than steel rebar in addition, moderate flexural
strength, these properties make GFRP is good alternative of steel in foundations application
ADVENTAGES OF GRP ROCK BOLT AGAINST STEEL BOLTS
- In general: GFRP reinforcing bar has higher tensile strength and higher corrosion
Resistance than steel rebar in addition, moderate flexural strength, these properties make
GFRP is good alternative of steel in foundations application.
- Impervious to Chloride Ion and low pH chemical attack.
- Tensile strengths greater than steel.
- 1/4th the weight of steel rebar.
- Transparent to magnetic fields and radio frequencies
- Electrically non-conductive.
- Thermally non-conductive.
- Thermal expansion Co efficient of GFRP is close to Cement than that of Steel.
GFRP REBARS
TECHNICAL DATA
Engineered Composites carry a range of standard sizes of GRP Rebar as stock items. These
products are all in the natural (unpigmented) colour of the composite and are in 5m lengths.
Dia.
(mm) |
Cross
Section(mm2) |
Density
(g/cm3) |
Weight
(g/m) |
Ultimate
Tensile-KN |
Shear
Strength
(Mpa) |
E-modulus
(Gpa) |
4 |
12 |
2.0 |
32 |
18 |
>110 |
>40 |
6 |
28 |
2.0 |
51 |
36 |
>110 |
>40 |
8 |
50 |
2.0 |
98 |
54 |
>110 |
>40 |
10 |
73 |
2.0 |
150 |
72 |
>110 |
>40 |
12 |
103 |
2.0 |
210 |
99 |
>110 |
>40 |
16 |
180 |
2.0 |
388 |
149 |
>110 |
>40 |
18 |
248 |
2.0 |
485 |
189 |
>110 |
>40 |
20 |
278 |
2.0 |
570 |
225 |
>110 |
>40 |
22 |
355 |
2.0 |
700 |
270 |
>110 |
>40 |
25 |
478 |
2.0 |
910 |
342 |
>110 |
>40 |
30 |
671 |
2.0 |
1350 |
450 |
>110 |
>40 |
32 |
740 |
2.0 |
1520 |
504 |
>110 |
>40 |
*RP Rebar can be made to order in any straight length up to 11m in the standard helical wind finish or sanded finish
* The Metal end Fitting can be supplied as per the Customer Requirement and specification
APPLICATION:
Widely used in slope Engineering, tunnel ,large cave support as well as
restoration of engineering structure. It can improve the strength and stability of surround,
rock mass and other structures.
- Structures Built In Or Close To Sea Water.
- Thermally Sensitive Applications & Weight Sensitive Structures.
- Structures Subject To Other Corrosive Agents
- Structures Required In Boring / Tunneling Applications.
- Structures Requiring Low Electrical Conductivity / Electromagnetic Neutrality
