Fast-Setting Microsilica Concrete Additive
MGP440-F
Powdered Superplasticizer Additive with Waterproofing and Setting Accelerator Properties
What is Fast-Setting Microsilica Concrete Additive?
The Fast-Setting Microsilica Concrete Additive is a developed product consisting of superplasticizers, microsilica powder, water-repelling agents, catalysts, fillers, polypropylene fibers, and setting accelerators. It is presented in a powdered form. This additive is added to dry materials during the concrete mix and then water is added to the resulting mixture. In addition to increasing the slump and improving workability due to the presence of superplasticizers in its formulation, it prevents water absorption and reduces permeability of the hardened concrete. This property is due to the presence of nanosilica particles and waterproofing materials in the formulation. Additionally, the polypropylene fibers in this additive enhance the mechanical and abrasion resistance properties of the concrete. The Fast-Setting Microsilica Concrete Additive is designed for use in concrete pouring in cold weather conditions, accelerating the initial set of the concrete. It also contributes to reducing cement consumption by 15 to 20 percent.
Overall, this product is an additive used in concrete mixtures to accelerate the setting time of the concrete. It is beneficial for construction projects where faster setting times are important. This additive can speed up the setting process in cold weather and counteract delays. Ultimately, using this additive can significantly improve construction timelines and reduce project scheduling.
Mechanism of Action of Fast-Setting Microsilica Concrete Additive
How does the Fast-Setting Microsilica Concrete Additive improve concrete performance?
When water and cement are mixed, the poly-naphthalene sulfonate molecules in the formulation of the Fast-Setting Microsilica Concrete Additive create a charged shell around the cement particles. This causes the cement particles to repel each other, resulting in increased workability of the concrete. The additive also includes setting accelerators that react with the cement to speed up the hydration process. Additionally, the naphthalene sulfonate prevents the dissolution of ions such as aluminates, which have the highest solubility during the early stages of hydration. Furthermore, the microsilica in the additive reacts with the calcium hydroxide (Ca(OH)2) in the micropores of the concrete, forming insoluble calcium silicate crystals. This process increases the density of the concrete, reducing its permeability and enhancing some of its properties.
Properties and Effects of Fast-Setting Microsilica Concrete Additive
What properties and effects does the Fast-Setting Microsilica Concrete Additive offer in concrete?
- Can replace Type 2 cement with Type 5 cement
- Reduces cement consumption by 15 to 20 percent
- Prevents the penetration of chloride ions and other harmful ions into the concrete
- Accelerates the setting time of the concrete
- Provides early compressive strength
- Increases flexural and tensile strength of concrete
- Enhances workability and the workable time of the concrete
- Reduces water-to-cement ratio by approximately 10 to 15 percent
- Increases concrete slump
- Compatible with all types of Portland cements
- Increases compressive strength by 40 to 60 percent
- Reduces concrete permeability and water absorption
- Improves pumpability and reduces wear and tear on concrete pouring equipment
- Provides early compressive strength
Applications of Fast-Setting Microsilica Concrete Additive
What applications does the Fast-Setting Microsilica Concrete Additive have for improving concrete performance?
- Suitable for making concrete for water treatment plants, swimming pools, channels, etc.
- Concrete pouring in cold weather and freezing conditions
- Suitable for making impermeable and waterproof concrete
- Can be used for constructing all concrete structural elements
- Suitable for the construction of docks, swimming pools, bridges, reservoirs, and treatment plants
- Suitable for making durable and resistant concrete
- Can be used in areas exposed to harmful chemical ions
- Suitable for producing reinforced concrete without the need for thermal rebar
Physical and Chemical Properties of Fast-Setting Microsilica Concrete Additive
What are the physical and chemical properties of the Fast-Setting Microsilica Concrete Additive?
- Form: Thick slurry
- Color: Powder
- Specific gravity: 2 gr/cm3
- Chloride ions: None
Standard of Fast-Setting Microsilica Concrete Additive
The Fast-Setting Microsilica Concrete Additive is produced according to the ASTM C1202 standard.
Usage of Fast-Setting Microsilica Concrete Additive
How much Fast-Setting Microsilica Concrete Additive should be used?
The exact usage of the Fast-Setting Microsilica Concrete Additive is determined by laboratory testing and environmental conditions, as well as the required strengths. However, the typical usage is 5 to 8 percent by weight of the cement used. It is recommended to use a water-to-cement ratio of 0.4 when adding the Fast-Setting Microsilica Concrete Additive.
How to Use Fast-Setting Microsilica Concrete Additive
How is the Fast-Setting Microsilica Concrete Additive used?
The Fast-Setting Microsilica Concrete Additive can be added to the mixture in two ways:
- The best method is to add it to the dry materials first. After mixing with the dry materials, add the required water and mix.
- The additive can also be added to ready-mixed concrete.
Note: To ensure proper mixing and uniform consistency, mix for at least 1 minute per cubic meter of concrete.
Safety of Fast-Setting Microsilica Concrete Additive
What safety precautions should be followed when using the Fast-Setting Microsilica Concrete Additive?
- In case of contact with skin or eyes, rinse immediately with plenty of clean water.
- The Fast-Setting Microsilica Concrete Additive is not toxic or hazardous to the environment.
- It is recommended to wear a mask, gloves, and safety goggles when handling any chemical substances.
- In case of ingestion, seek medical attention immediately.
Storage of Fast-Setting Microsilica Concrete Additive
How should the Fast-Setting Microsilica Concrete Additive be stored?
- Shelf life: 1 year in the original packaging
- Should be stored away from freezing, excessive heat, and direct sunlight.
- Optimal storage temperature: +10°C to +30°C
Packaging of Fast-Setting Microsilica Concrete Additive
What is the packaging of the Fast-Setting Microsilica Concrete Additive?
- 20 kg bags
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