Corner and Edge Coverage: Plastic chamfers are designed to cover and reinforce the corners and edges of concrete molds. They help maintain precision and quality during concrete casting.
Concrete Protection: By using chamfers, damage or deterioration of concrete corners and edges during various construction stages can be prevented.
Features of Plastic Chamfer
Design: Typically angled in shape to fit easily into corners and edges.
Material: Made from durable plastic that fits smoothly into molds and can be easily removed after the concrete has cured.
Precision: Helps maintain accuracy in concrete corners and edges, preventing deformation or irregular shapes.
Advantages of Plastic Chamfer
Ease of Use: Simple to install and use without the need for special tools.
Enhanced Durability: Improves the strength and longevity of concrete corners and edges.
Reduced Repairs: By improving the quality of edges, it minimizes the need for post-casting repairs.
Physical and Chemical Specifications of Plastic Chamfer
🔧 Physical Specifications:
Material Composition:
Made from polypropylene (PP) or high-density polyethylene (HDPE), offering high strength and long service life.
Dimensions and Shape:
Typically designed as hollow or angled triangles with sides ranging from 10 to 25 mm (e.g., 10×10 or 20×20).
These dimensions determine the bevel size formed on concrete edges.
Weight:
Lightweight, allowing for easy installation and transport on-site.
Installation:
Positioned along the inner edges of metal or wooden molds and secured using adhesive, nails, or special clamps.
Reusability:
Resistant to formwork pressure and suitable for multiple uses without deformation.
Common Colors:
Usually produced in black, gray, or occasionally blue.
🧪 Chemical Specifications:
Moisture and Alkaline Resistance:
Fully resistant to water, wet concrete, cement, and other alkaline construction materials.
Non-Reactive:
Does not chemically interact with any components of concrete and does not affect its quality.
Thermal Resistance:
Capable of withstanding workshop temperatures from -10°C to +70°C without cracking or warping.
UV Resistance:
Stabilized polymer variants are resistant to sunlight exposure and do not become brittle or dry prematurely.
Recyclability:
At the end of its service life, it can be recycled in plastic recycling industries.
How to Use Plastic Chamfer in Concrete Formwork
Form Preparation:
First, clean and dry the concrete formwork (metal or wooden).
Ensure the chamfer installation area is smooth, clean, and free of grease or dust for better adhesion and secure placement.
Cutting to Desired Length:
Chamfers are typically supplied in 2 or 3-meter lengths.
Use a handsaw or plastic cutter to trim the chamfer to match the length of the target corner.
Installation in the Formwork:
The chamfer should be placed precisely at the 90-degree internal corner of the form (where two sides meet).
You can secure it using one of the following methods:
Nailing into wooden forms (using pre-drilled holes or a drill)
Applying industrial or hot-melt adhesive for metal forms
Tying with thin soft wire to metal or wooden forms, especially in hard-to-reach areas
Level and Bond Check:
After installation, make sure the chamfer is not misaligned or loose, as this will affect the final shape of the concrete.
Ensure there are no gaps between the chamfer and the form to prevent mortar leakage.
Concrete Pouring:
Once the chamfer is fully installed, proceed with pouring the concrete.
The chamfer will embed into the concrete, and after form removal, it leaves a clean bevel on the concrete edge.
Form Removal and Cleaning:
After the concrete has hardened and the form is removed, gently detach the chamfer.
If undamaged, it can be reused in future projects.
