Rebars

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.
  
  

S.No	PARAMETER	GRP	STEEL
1	ELECTRICAL RESISTANCE	NON CONDUCTIVE	CONDUCTOR
2	CORROSSION RESISTANCE	ANTI CORROSIVE MATERIAL	CORROSION TO MOISTURE / SOIL
3	TENSILE STRENGTH	860 N/mm2	760 N/mm2
4	WEIGHT	25% OF STEEL	75% MORE
5	SAFITY	NO DAMAGE TO CUTTING TOOL	DAMAGES THE CUTTING TOOL
6	HANDLING & INSTALLATION	EASY TO CARRY AND INSTALLATION	REQUIRE MORE SUPPORT

*DGMS APPROVAL No:S-9023/266/2009/S&T(HQ)/680

* The Metal end Fitting can be supplied as per the Customer Requirement and specification