Fiber areal weight : 935 g/m2
Fabric thickness : 0.36 mm
Fiber strength : 2300 Mpa
Fiber stiffness : 76 Gpa
Strains at break of fibers : 3.1 %
Fabric length : 40 m ( 20 m2/roll )
Fabric width : 50 cm
Shelf life : Unlimited
Packaging : roll
SURFACE PREPARATION GRINDING:
Expose firm surface of a given strength by removing paints, concrete plaster, contaminations or deteriorated areas of the concrete surfaces using a grinder or similar tool to ensure the Glass UD Fabric will have sufficient adhesion. Make the concrete surface even by removing protruding parts. The appropriate surface roughness of a Glass UD fabric is 1mm or less. Corners are rounded be grinding within R-10mm. Thoroughly remove grinding dust with compressed air or a rug. Dry sufficiently when cleaned with water. Surface grinding and cleaning are critical to ensure work quality.
Fill conspicuous dents on the concrete surface with a high strength mortar, epoxy mortar etc. Finish the mortar surface roughness within 1mm or less. Apply rust-proofing (anti-corrosive) chemical to exposed steel rods. Fill cracks with epoxy resin or similar materials. Apply water-proofing or guiding materials to sections where water is leaking.
Select an appropriate primer in consideration of the temperature after checking the surface state (dust, moisture, etc.). Determine the amount of the primer to mix for one batch considering the area to apply, time required, manpower and skill levels. Mix primer using an electric mixer for two to three minutes till it reaches an even color after mixing the base and hardening materials with a weight based ratio of 2 to 1. Move the mixed primer to an appropriate container and apply it evenly with a coating roller. Apply at a thickness of 250g/m2 though varying depending on the surface conditions.
FILLING OF SURFACE IRREGULARITIES WITH EPOXY PUTTY
Select an appropriate epoxy putty considering the adhesiveness, viscosity and curing or hardening speed. Smoothly finish the surface by filling up holes or dents with putty using a rubber or plastic spatula.
APPLICATION OF GLASS UD FABRIC
Determine the resin type after establishing implementation plans considering the area, shape, work force, work conditions and curing time. Cut the Glass UD Fabric into suitable lengths (usually 3~4m) using a pair of scissors or cutter. Mix the resin base and curing agent using an electric mixer for two to three minutes till it turns an even color after mixing the base and curing material at a weight ratio of 2 to 1. Move the mixed resin to an appropriate container and apply evenly with a coating roller. Attach the Glass UD Fabric with the release base paper intact on the prime resin coat area. Detach the release base paper after fixing the sheet tight on the surface with a rubber spatula. Press the sheet hard along the glass fiber texture with a roller till the prime coat resin soaks through the Glass UD Fabric. Attach the sheet with 10cm or longer overlapping space in the glass fiber length direction. Apply pressing as mentioned above. Overlapping in the direction of width is not required. Coat the Glass UD Fabric surface with the mixed dipping resin within 30 minutes to three hours from pressing. The top coat needs be applied evenly on the Glass UD Fabric surface by moving the roller in the glass length direction only. When two or more layers of Glass UD Fabric are applied, let the first top coat dry fully before proceeding to the next layer. Generally, one coat per day is the normal. Correct the first layer's defective areas before applying the second layer.
CURING & COATING FINISH COATING
The following curing period is required to obtain the design strength of the Glass UD Fabric. Cover the outdoor implementations to prevent contamination from rain, wind or dust during the curing period.
The coverings should not touch the surface directly.