Fast-Setting Microsilica Gel Additive
Fast Harden
MGS400-F
Super Plasticizer and Water Repellent Additive with Accelerating Set Properties
What is Fast-Setting Microsilica Gel Additive?
The Fast-Setting Microsilica Gel Additive is a powerful additive based on polycarboxylate ether, composed of microsilica powder, superplasticizer, water repellents, fillers, polypropylene fibers, and accelerators. This product is used to create impermeable and durable types of concrete. The Fast-Setting Microsilica Gel Additive is a super pozzolan and has a significant effect on enhancing both the mechanical and electrical properties of concrete. It improves the rheological properties of concrete in its plastic state and enhances the properties of hardened concrete. Adding this additive helps fill voids between aggregates, thereby increasing the density and cohesion of concrete, while reducing permeability. The product accelerates the setting of concrete at early ages and allows for concrete pouring in cold weather conditions. By adding this product to the concrete mix, microsilica powder, superplasticizer, and fibers are incorporated into the concrete, which helps improve various mechanical properties of the concrete while increasing the hydration rate of water and cement.
In general, the product is an advanced enhanced additive used in the production of concrete. It is particularly effective in areas exposed to chemicals and corrosion. This additive is characterized by durability, resistance, and flexibility against environmental conditions.
Mechanism of Action of Fast-Setting Microsilica Gel Additive
The microsilica in the formulation of the Fast-Setting Microsilica Gel Additive is a powerful pozzolanic material that can serve as a good replacement for cement and functions similarly. When combined with water and calcium hydroxide, it reacts to produce calcium silicate hydrate, which plays a crucial role in hardening the concrete and increasing its strength. Additionally, the polycarboxylate ether in the formulation, which acts as a superplasticizer, forms a film on the cement particles. The spatial hindrance caused by the absorbed polymer layer prevents the cement particles from clumping together, while the polymer’s electrostatic repulsion between similarly charged particles helps to fluidize the concrete. The polypropylene fibers in the structure of the Fast-Setting Microsilica Gel Additive also contribute to improving the mechanical and wear resistance properties of the concrete. The accelerators in the formulation increase the rate of cement hydration and shorten the setting time of concrete.
Properties and Effects of Fast-Setting Microsilica Gel Additive
What effects and properties does the Fast-Setting Microsilica Gel Additive impart to concrete?
- Easy pumping of concrete and reduced wear on concrete pumping equipment.
- Reduced cement content and water-to-cement ratio.
- Increases the durability and longevity of concrete in freeze-thaw cycles.
- Accelerates concrete setting at early ages.
- Prevents water bleeding and aggregate segregation.
- Increases compressive, tensile, and flexural strengths.
- Compatible with various types of Portland cement.
- Reduces permeability to chloride ions, sulfate attack, and water penetration.
- Creates a uniform and homogeneous mix for high-quality exposed surfaces.
- Compensates for the lack of fine fillers to improve the texture of the mix.
- Extends the workability time of the concrete in its plastic state.
Applications of Fast-Setting Microsilica Gel Additive
What are the major applications of the Fast-Setting Microsilica Gel Additive?
- Suitable for industrial floor concrete and warehouse flooring.
- Ideal for producing precast concrete components for faster utilization.
- Useful for producing high-strength and durable concrete.
- Ideal for large-scale concrete pours.
- Suitable for both reinforced and non-reinforced concrete.
- Suitable for creating impermeable concrete.
- Effective for concrete pouring in cold weather conditions.
- Used for applications exposed to wear and abrasion.
- Suitable for making water-bound concrete, tunnels, water transport channels, treatment plants, and reservoirs.
- Can be used in concrete exposed to explosive conditions.
- Ideal for concrete exposed to freeze-thaw cycles.
- Useful for concrete pouring in areas attacked by chemicals and corrosive materials.
- Ideal for making concrete for bridges, reservoirs, dams, and piers.
Physical and Chemical Properties of Fast-Setting Microsilica Gel Additive
What are the physical and chemical properties of the Fast-Setting Microsilica Gel Additive?
- State: Thick slurry
- Color: Dark gray
- Specific gravity: 1.43 g/cm³
- Chloride ions: None
Standards for Fast-Setting Microsilica Gel Additive
According to which international standards is the Fast-Setting Microsilica Gel Additive manufactured?
- ASTM C1202
- BSEN 12390
Dosage of Fast-Setting Microsilica Gel Additive
What is the recommended dosage of the Fast-Setting Microsilica Gel Additive?
The dosage of the Fast-Setting Microsilica Gel Additive is determined through precise laboratory studies. Typically, the amount used is 3 to 5 percent by weight of the cement content. For achieving high compressive strength and producing high-performance concrete, 10 to 15 percent of the mixing water should be reduced before adding this additive. Using more than the recommended amount can cause excessive fluidity, which may result in issues with the concrete. It is recommended to maintain a water-to-cement ratio of 0.4 during the addition of this additive.
Application Method of Fast-Setting Microsilica Gel Additive
What is the correct application method for the Fast-Setting Microsilica Gel Additive?
The Fast-Setting Microsilica Gel Additive can be added to the concrete mix in two ways:
- Combine it with all or part of the mixing water and then add it to the dry materials and mix thoroughly.
- Add it after all the other components of the mix have been incorporated.
Note: Ensure that the mixing process lasts at least 1 minute per cubic meter of concrete.
Safety Considerations for Fast-Setting Microsilica Gel Additive
What safety precautions should be taken when using the Fast-Setting Microsilica Gel Additive?
- Polycarboxylate ether is not hazardous, toxic, or flammable.
- If swallowed, seek medical attention immediately.
- In case of accidental contact with skin or eyes, rinse immediately with plenty of clean water.
- Always use safety gloves, masks, and goggles when working with any chemicals.
Storage of Fast-Setting Microsilica Gel Additive
What are the storage instructions for the Fast-Setting Microsilica Gel Additive?
- Shelf life: One year in its original packaging.
- Store away from freezing conditions, excessive heat, and direct sunlight.
- Ideal storage temperature: Between 10°C to 30°C.
Packaging of Fast-Setting Microsilica Gel Additive
How is the Fast-Setting Microsilica Gel Additive packaged?
- Packaging: 25 kg bucket
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