Description
Micro-silica powder, commonly referred to as Silica Fume, is a highly effective additive that will improve the strength and longevity of concrete.
Addage provides a premium form of Micro-Silica powder named Fumecrete 90 and was developed specifically to provide a high-quality, low-permeable concrete that can withstand extreme physical conditions associated with heavy-duty applications.
Fumecrete 90 contains ultra-fine amorphous silicone dioxide (SiO₂) particles that are essential components of high-performance concrete products and provide extended service life.
Fumecrete 90 is strongly recommended for any application where high-strength, durable concrete is required and has excellent resistance to harsh/water-related conditions.
Key Features
Micro-Silica Powder, such as Fumecrete 90, provides significant enhancements in performance and durability for concrete. Its very small particle size is approximately 100x smaller than other additives such as cement and fly ash, and allows for filling of the tiny voids within the concrete matrix where moisture can enter.
The addition of this product leads to the development of denser, stronger, and more impermeable concrete products.
The use of silica is also known to contribute to an increase in C-S-H (Calcium Silicate Hydrate) formation, through the pozzolanic reaction of silica with calcium hydroxide generated during the setting and hardening process of cement.
Additionally, Fumecrete 90 helps reduce alkali-silica reaction (ASR), commonly known as concrete cancer, and acts as an effective corrosion inhibitor for steel reinforcement.
Technical Specifications
- Brand: Addage
- Form: Powder
- Appearance: Gray powder
- Usage/Application: Commercial
- Grade Standard: Technical Grade
- Packaging Size: 20 Kg
- Packaging Type: Bag
- Minimum Order Quantity: 100 Kg
Recommended Applications
Fumecrete 90 Micro Silica Powder (Silica Fume) is suitable for a wide range of high-performance concrete applications, including:
- High-strength concrete structures
- Bridge decks and infrastructure projects
- Marine and coastal constructions
- Industrial floors and heavy-duty pavements
- Structures exposed to aggressive chemicals
- Concrete requiring resistance to ASR (Concrete Cancer)
- Projects needing enhanced durability and service life
It is especially beneficial in environments where moisture ingress, chloride penetration, and reinforcement corrosion are major concerns.
Dosage Guidelines
Generally, the percentage of Fumecrete 90 used in the concrete mix is 5% – 10% of the weight of the cement, depending on what is required from the performance of that particular concrete mix.
When using Fumecrete 90, it is essential to ensure that it has been mixed uniformly with the cement or added to the mix during the batching process, so that it is evenly distributed throughout the concrete.
It is critical to mix Fumecrete 90 long enough to activate the pozzolanic reaction, which will enable the user to achieve consistent results. A suitable superplasticizer is recommended when using Fumecrete 90 due to the high surface area of micro silica. Always follow Addage’s technical recommendations for optimal performance.
Benefits of Fumecrete 90:
- Significantly increases the compressive, flexural, and bond strength of concrete.
- Produces dense, low-permeable concrete.
- Enhances the durability and the service life of concrete structures.
- Acts as a corrosion inhibitor for steel reinforcement.
- Reduces both water permeability and chloride penetration.
- Minimizes the possibility of alkali-silica reaction (ASR) and concrete cancer.
- Enhances the rheology of the concrete and reduces the water-binder ratio.
- Enhances resistance to sulfate attack and carbonation.
- Reduces dampness and/or water leakage problems.
Fumecrete 90 provides a user with the ability to produce a high-quality concrete that meets the demands of current infrastructure and heavy-duty construction.
Packing
Micro Silica Powder (Fumecrete 90) is supplied in 20 Kg moisture-resistant bags, ensuring safe handling, easy transportation, and protection against contamination on-site.
Storage & Shelf Life
Store Fumecrete 90 in a cool, dry place away from moisture and direct sunlight. Bags should remain sealed until use. When stored under recommended conditions, the product maintains its quality and performance for a long shelf life as specified by the manufacturer.
Safety Precautions
Use protective gloves, dust masks, and safety goggles while handling micro silica powder. Avoid inhalation of fine dust and prolonged skin contact. In case of contact with eyes or skin, rinse immediately with clean water. Follow standard safety practices during handling and application.
