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| GFRP Rebar |
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The GFRP rebar is a composite material made from high strength glass fibers with an extremely durable vinyl ester resin. The glass fibers impart strength to the rod while the vinyl ester resin imparts excellent corrosion resistance properties in harsh chemical and alkaline environments. For improved stiffness and mechanical properties a carbon/vinyl ester product is available. FRP rebar significantly improves the longevity of civil engineering structures where corrosion is a major factor. As compared to conventional steel rebar, composite rebar is a suitable alternative to steel reinforcing in:
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Architectural Concrete: cast stone, architectural cladding, balusters, column facades, window lentils, architectural pre-cast elements, hand railing, statuary and fountains, etc.
Concrete Exposed To De-icing Salts in: bridge decks, railroad grade crossings, median barriers, parking garage elements, and salt storage facilities, etc.
Concrete Exposed To Marine Salts in: seawalls, water breaks, buildings & structures near waterfront, aquaculture operations, and floating marine docks, etc.
Applications Subjected To Other Corrosive Agents: Wastewater treatment plants; petrochemical plants; pulp/paper mills; liquid gas plants; pipelines / tanks for fossil fuel; cooling towers; chimneys; mining operations of various types; nuclear power and dump plants.
Applications Requiring Low Electric Conductivity or Electromagnetic Neutrality: Aluminum and copper smelting plants; manholes for electrical and telephone communication equipment; bases for transmission / telecommunication towers; airport control towers; magnetic resonance imaging in hospitals; railroad crossing sites, and specialized military structures
Tunneling / Boring Applications Requiring Reinforcement of Temporary Concrete Structures: Structures including mining walls; underground rapid transit structures and underground vertical shafts.
Weight Sensitive Structures: Concrete construction in areas of poor load bearing soil conditions, remote geographical locations, sensitive environmental areas, or active seismic sites posing special issues that the use of lightweight reinforcement will solve.
Thermally Sensitive Applications: Apartment patio decks; thermally insulated concrete housing and basements; thermally heated floors and conditioning rooms.
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| GFRP Rebar Features: |
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Non-corrosive Non-metallic and non-conductive
Tensile strength is more than twice that of steel
Consistent modulus of elasticity
Deformation patterns are the same as with steel
Four times lighter than steel
Pre-fabricated ACI standard angles and bends available
Coefficient of thermal expansion more similar to concrete that of steel
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Click เพื่อขยายภายใหญ่
| GFRP Rock Bolts: |
CHANCON's Rock bolt comes with a surface roughened by either helical winding or sand coated surface for enhanced bonding between grouting material and GFRP rod with high-pressure injection mould thread, composite nut or mechanical wedge.
Advantages:
High strength and impact toughness
Non-Corrosive
Non-Conductive
Dimensionally-Stable-Under-Thermal-Loading
Outstanding anchorage capability.
Excellent performance in high deformation ribs.
Installed with standard techniques and equipment.
Easily handled and transported.
Fire resistant and anti-static rating.
Cut ability without the danger of sparks.
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| CFRP Tape & Rebar for NSM Strengthening |
Description
CFRP (Carbon Fiber Reinforced Polymer) Tape & Rebar is used for structural strengthening of concrete, masonry or timber elements using the technique known as "Near Surface Mount" or NSM strengthening
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Physical Properties
| Dimension |
Tensile Strength |
Modulus of Elasticity |
Elongation |
| 2x16mm. |
2,000Mpa |
135Gpa |
1.7% |
| Dia. 9.5mm. |
1,850Mpa |
115Gpa |
1.7% |
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Uses
Applications suitable for structural strengthening using CFRP Tape & Rebar include:
Increasing flexural capacity of beams
Shear Strengthening of beams
Flexural Strengthening of slabs
Strengthening of Concrete, Masonry or Timber
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Benefits of CFRP Tape & Rebar
The Benefits of using CFRP Tape & Rebar for structural strengthening using the Near Surface Mounted technique include:
Better bond with the substrate means greater utilization of the FRP.
CFRP Tape & Rebar arrives with guaranteed physical & mechanical properties
Surface preparation issues are minimized.
After installation, NSM tape & Rebar is protected from mechanical damage and offers better fire performance than externally bonded systems.
Installation of NSM CFRP Tape & Rebar is faster and can be done in more diverse weather conditions.
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Features of CFRP Tape & Rebar
CFRP tape is a 2mm. X 16mm. "tape", CFRP Rebar is 3/8inch rod in Dia, and they are designed specifically for NSM strengthening. The tape is made from carbon fiber, at least 60% by volume in a Bisphenol Epoxy Vinyl ester resin matrix, and the Rebar is made from Carbon fiber in Epoxy Resin with 68% by volume. A surface treatment is applied to the wide faces of the CFRP Tape and the CFRP Rebar is sand-coated to enhance the bond characteristics when used with structural epoxy adhesives such or cementitious latex modified grouts.
The nominal "diameter" or cross sectional area of CFRP tape is the same as a ?" diameter rod. It is furnished in continuous lengths in spools that are 250ft (76m) long.
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| Fiberglass Dowel Bars -Corrosion Proof Dowel Bar |
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Introduction
In the construction of concrete slabs, either on grade, elevated, or otherwise, joints, known by such terminology as expansion, contraction, etc., are purposely positioned in the slab to control where cracks in, or movement of the slab will occur. These joints may be cut into the slab after the concrete material is placed and hardened, scribed into the concrete during placement, or defined by means of various joint making materials which are placed prior to the concrete placement.
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Physical Properties of GFRP Dowel bars
| Dowel Dia |
Yield Tensile Load
(lbs) |
Shear in Bending
(lbs) |
Double Shear
(lbs) |
| 1/2" |
25,000 |
2,000 |
23,000 |
| 5/8" |
35,000 |
2,900 |
23,000 |
| 3/4" |
42,000 |
5,100 |
23,000 |
| 1" |
66,000 |
8,600 |
23,000 |
| 1 1/4" |
110,000 |
16,000 |
23,000 |
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GFRP Dowel Bar in Place
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