Table of Contents
What Are Bond Breakers?
Bond breakers are products developed by an engineer. Bond breakers are used to easily separate two surfaces.
Bond breakers mostly use wax, petroleum-based substances, or grease. But these chemicals change the characteristics of the surface by the chemical reaction with the surface on which they are applied.
Bond breakers are used more in precast units. Bond breakers are used in precast units to remove precast from the formwork. It also provides enough strength to lift and move pieces of precast.
Bond breakers are applied to the surface of the formwork so that the concrete precast can be easily separated from the formwork. . This bond breaker is used in special formwork in precast products such as cement pipes, concrete blocks, U-shaped drains, etc.
Precast products like concrete pipe, u-shape drain are loaded into the truck using equipment like a crane. This product is then unloaded on the site.
Bond breakers are commonly used in tilt-up walls and concrete precast units.
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Purpose of Providing Bond Breaker
- Bond breakers are used to ensure that there is no adhesive molecular bond between the two surfaces.
- Bond breakers are used to eliminate cracking in the slab due to temperature changes.
- In addition, it is applied to the concrete surface to reduce the cracking of the slab due to changes in atmospheric humidity.
- Once the bond breaker is applied to the surface, then once the concrete is poured, the concrete will develop as its own separate property.
- Bond breakers are available in the market in various forms, such as liquids, taps, rods, and sprays.
- Using a bond breaker can extend the life of the formwork.
- To ensure the top surface of the precast members, bond breakers are commonly used.
Materials Used in Bond Breaker
Construction is on the rise nationally and internationally. Along with this growth, the use of bond breakers has also increased. This article will help you dispel some myths about the proper use of bond-breaking products. This article can help you follow the good production and construction process.
The materials used for bond breaker are classified into several forms which are as follows
- Liquid.
- Spray.
- Rods.
- Taps.
1. Liquid
Liquid bond breakers are mostly petroleum-based materials used. This type of bond breaker is used more for manufacturing concrete products.
This type of bond breaker is used to increase the efficiency of the mold for precast.
2. Spray
This is a spray-type bond breaker. Which is sprayed between two surfaces of concrete. So that cracks in concrete can be minimized.
3. Rods
Rods are used in this type of bond breaker. Rods are fixed between two adjacent surfaces of concrete. So that a joint can be provided in concrete.
4. Tape
The use of this type of bond breaker can preserve the characteristics of the concrete surface. Other elements can be used to give an architectural effect.
What Is Concrete Bond Breaker?
A concrete bond breaker forms a sheet-like structure between two surfaces of concrete. So that the surfaces of the concrete work independently.
The concrete bond breaker forms a kind of coating by chemical processing with the surface of the concrete.
Type of Concrete Bond Breaker
The two main categories of bond breakers can be membrane formation and non-membrane formation. In simple language, one is called water-based, and the other is called non-water-based.
Water-based indicates that water is the main contributor to the bond broker. Waterless materials include petroleum distillation, i.e., mineral infusions, essential oils, etc.
1. Membrane Forming
Silcoseal Advantage is a water-based bond breaker. Used for tilt-up, and precast construction projects. When a Silcoseal advantage is applied to the surface of concrete, the concrete reacts with the hydration process and consequently prevents the surfaces from sticking.
To help the concrete mixing water provide proper cement hydration and concrete treatment, this bond breaker is used. This bond breaker increases the strength of the concrete surface and reduces cracking.
2. Non-Membrane Forming
Non-membrane forming bond breakers are divided into two types. These are known as reactive types and non-reactive types. Fatty acids are used as stearates as a reactive bond-breaking material.
The reactive bond breaker will react with the concrete and produce crude soap.
The non-reactive bond breaker will stick with the concrete surface and produce a waterproof surface.
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Advantage of Bond Breaker
- The efficiency of formwork can be increased. And formwork can be reused.
- Using a bond breaker can easily reduce the time to clean the formwork.
- Using a bond breaker can reduce the amount of time required to move loads.
- Using a bond breaker on scheduled surfaces of concrete treats those surfaces as separate units.
- Bond breakers are used to ensure that there is no adhesive molecular bond between the two surfaces.
- Bond breakers are used to eliminate cracking in the slab due to temperature changes.
- In addition, it is applied to the concrete surface to reduce the cracking of the slab due to changes in atmospheric humidity.
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