Description

 

Product Introduction

AOSILE AS-8677 is a professional mold release agent designed specifically for concrete applications such as bridge beams, tunnels, and high-speed railway projects.
It is ideal for use with secondary linings in tunnel construction and other large concrete structures.

• Suitable molds: steel molds and tunnel lining trolleys.
• Safe and eco-friendly: non-toxic, non-corrosive, non-flammable, free from mineral oil risks.
• Provides a smooth, glossy, and uniform finish with fewer air bubbles.
• High dilution rate: Can be diluted with water at a ratio of 1:20–30, offering excellent cost-efficiency.
• Packaging: 20kg/50kg/200kg/1000kg  per drum.

Product Performance

• Appearance: Milky white liquid
• pH: Neutral (7–8)
• Emulsion stability: High stability, suitable for on-site dilution
• Release performance: Strong separation, leaves surface flat and smooth
• Cement residue: <3.0 g/m², no sticking to steel molds
• Water resistance: Excellent resistance to water flushing

Method of Application

1. Dilute the product with water at a ratio of 1:20~30 (1kg agent + 20kg or above water), mix evenly.
2. Apply the diluted solution using a sprayer, covering the inner sides of the tunnel trolley evenly. Ensure full surface coverage.
3. After spraying, allow it to dry before pouring concrete. Avoid moving the trolley immediately after spraying.
4. If white powder or a rough surface appears after stripping, adjust the dilution ratio (e.g., add to 1:22) until the surface appears clean and shiny.

Construction Notes

1. Dilution ratio must be followed strictly. Do not over-spray or spray on a wet surface.
2. Ensure the release agent dries fully before pouring concrete.
3. Apply during clean and dry mold conditions, ensuring no contamination or water on the surface.
4. For best results, inspect tunnel linings frequently to ensure no powder remains on the mold before reuse.

Tunnel Formwork Release Agent – Top 10 FAQs

1. What is tunnel formwork release agent used for?

It is specifically designed for use on large tunnel formwork systems in concrete construction. It prevents concrete from bonding to the steel shuttering, ensuring smooth formwork , protecting the formwork surface, and improving the surface finish of the concrete tunnel lining.

2. Is this product oil-based or water-based?

Water -Based one.Our water-based tunnel release agent is more environmentally friendly, easier to clean.

3. Do I need to dilute it before use?Why?

Yes ,Without water, the active ingredients cannot form the correct thin film.

AS-8677 need to be  diluted with 1:20~30  water . Concentrated liquid also can better save transportation and storage costs.

4. Will it stain the concrete surface?

Our water-based tunnel release agent leaves minimal to no staining, making it suitable for exposed concrete surfaces where a clean, uniform appearance.

5.Is it safe for steel formwork?

Yes. Our tunnel release agent is formulated to protect steel formwork from concrete adhesion and reduce rust formation.

6. Is the product environmentally friendly?

Yes ,completely environmentally friendly and harmless.

7.Do you provide MSDS and SGS certificates?

 Yes. Every product comes with a compliant MSDS. We also have up-to-date SGS test reports (including EU RoHS compliance) available upon request. Contact us for the latest versions.