Introduction
Concrete release agents are applied to formwork before pouring concrete to prevent the concrete from sticking to the surface. This makes form removal easier and preserves the smoothness of the concrete finish. Essentially, these agents create a film between the formwork and the concrete, acting as a barrier, which is why they are also known as isolation agents.
Main Purpose
These agents are widely used across various types of formwork, including steel, wood, bamboo plywood, plastic boards, and concrete countertops, in concrete construction projects.
Performance Characteristics
1. Water-based polymer composite formula, environmentally friendly.
2. Non-toxic, odorless, non-flammable, and easy to apply.
3. Excellent isolation performance ensuring easy demolding.
4. Rapid film formation providing water-resistant protection for formwork.
5. Leaves the concrete surface clean, smooth, and free from contaminants.
Instructions for Use
1. Dilute the product with water at a ratio of 1:7.
2. Thoroughly clean the formwork before application.
3. Stir well and apply evenly using a spray gun or brush.
Precautions
1. Exercise caution during application to avoid spills and slips.
2. Avoid applying on rainy days; however, once dry, the coating is rain-resistant.
3. Store away from direct sunlight to maintain product quality.
Features
The coating forms a hard, glossy, and durable layer that resists water, wear, rust, and corrosion. It is especially suitable for projects that demand strict protection of formwork and high-quality concrete surface finishes. Key features include:
1. Protects formwork and extends its lifespan by preventing rust and corrosion even when exposed outdoors or in wet conditions.
2. Enhances concrete’s appearance by preserving its natural color and achieving a smooth, marble-like finish with consistent color, fine texture, and shine—ideal for premium projects.
3. Produces a smooth enamel-like surface that facilitates easy removal and cleaning, improving work efficiency.
4. Offers excellent wear resistance and adhesion, allowing for multiple reuses.
5. Versatile application suitable for steel, wood, and bamboo molds.
6. Simple to apply, requiring only one coat.
7. Coverage rate ranges from 15 to 20 square meters per kilogram, with one application allowing 3-5 demoldings.
Choosing the Right Concrete Release Agent
Also referred to as isolation agents or release lubricants, concrete release agents are applied to the inner surfaces of formwork to lubricate and isolate the concrete. This facilitates smooth detachment during demolding while preserving the concrete’s shape and surface integrity. Compared to traditional oils or waste oils, modern release agents offer easier demolding, no surface pollution, no formwork corrosion, simple application, and cost-effectiveness. However, not all agents suit every formwork material or concrete condition. Selecting the appropriate release agent for different formwork materials and construction requirements is crucial for optimal results.
Basic Requirements for Release Agents
Applying a release agent to formwork aims to reduce adhesion between the concrete and formwork, ensuring easy separation and preventing damage during demolding, especially when concrete strength is still low. This helps achieve a smooth concrete surface, protects the formwork from deformation or rust, simplifies cleaning, and reduces repair costs. Therefore, an effective release agent should meet the following criteria:
1. Provide excellent demolding performance, allowing formwork to separate smoothly from concrete while leaving the concrete surface flat, smooth, and with neat, undamaged edges.
2. Be easy to apply, quick to form a mold (usually within 20 minutes), and simple to clean after demolding, ensuring construction efficiency and productivity.
3. Not affect the decorative quality of the concrete surface, avoiding any immersion marks or yellowing discoloration.
4. Be harmless to steel reinforcement and concrete, not compromising bond strength or setting time, and free of substances detrimental to concrete performance.
5. Protect formwork and extend its lifespan. For wooden formwork, the agent should penetrate the surface, fill joints, and prevent expansion, bulging, cracking, and other defects caused by wood variations and repeated use. For steel molds, it should prevent rust and rust stains on the concrete surface.
6. Exhibit good stability and a long shelf life.
7. Offer strong water and weather resistance. Release agents used outdoors or in prefabrication yards must withstand rain erosion, maintaining demolding performance after exposure. For hot-cured concrete components, heat resistance is essential, while frost resistance is needed for cold weather applications.
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