Overview of Concrete Additive

Concrete additives are chemicals used to improve the properties of concrete. They can enhance the strength, durability, workability and life of concrete while reducing cement usage and heat of hydration. Common additives include water reducers, air entraining agents, retarders and accelerators.

Features of Concrete Additive

Improve workability: Make concrete easier to pour and compact, especially in hot or cold environments.

Enhance durability: Improve the long-term durability of concrete structures by reducing porosity and increasing impermeability.

Control setting time: Use retarders to delay or accelerators to speed up the hardening process of concrete.

Save costs: Reduce cement usage while maintaining or enhancing the quality of the final product.

Environmentally friendly: Some additives help reduce carbon dioxide emissions and other environmental pollution.

(Micro silica for Concrete & Mortar Admixtures)

Specification of Micro silica for Concrete & Mortar Admixtures

Micro silica is a super fine powder. It comes from silicon metal production. This powder is almost pure silicon dioxide. The particles are extremely small. They are much smaller than cement grains. This fineness is key to its benefits.

Adding micro silica to concrete mixes does several good things. It fills the tiny gaps between cement particles. This creates a much denser concrete. Denser concrete is stronger. It also lasts longer. You get better resistance against wear and tear.

Micro silica also reacts chemically. It reacts with the calcium hydroxide released during cement hydration. This reaction creates more strong binder material. This further boosts strength and durability. The concrete becomes harder and tougher.

Water resistance improves significantly. The dense structure makes it hard for water to pass through. This reduces permeability. Less water getting inside means better protection against freeze-thaw damage. It also helps prevent chemicals from attacking the concrete. Steel reinforcement stays safer from corrosion.

Workability can be affected. Micro silica makes the mix sticky at first. You might need more superplasticizer. This keeps the concrete easy to place and finish. Don’t use too much micro silica. Excessive amounts can make the mix too stiff. The usual range is five to ten percent of the cement weight.

Proper mixing is essential. The powder must spread evenly throughout the concrete. This ensures consistent performance. Handle micro silica carefully. The fine dust can be irritating. Wear a mask and gloves when working with it.

(Micro silica for Concrete & Mortar Admixtures)

Applications of Micro silica for Concrete & Mortar Admixtures

Microsilica is a very fine powder. It comes from making silicon metal or alloys. This powder is super small. People also call it silica fume. Adding microsilica to concrete or mortar makes them much better. It works great with other materials like fly ash or slag.

When you mix microsilica into concrete, it does two important jobs. First, its tiny particles fill the small spaces between the cement grains. This makes the mixture much denser. Second, it reacts with the calcium hydroxide that forms when cement gets wet. This reaction makes more strong silicate gel. This gel bonds everything together tighter.

Because of these things, concrete with microsilica gets much stronger. Its compressive strength goes up a lot. The concrete also becomes much harder for water and chemicals to pass through. This means it lasts longer. It resists damage from things like salt, acids, or sulfates much better. It also helps protect the steel bars inside concrete from rusting. This is crucial for bridges or buildings near the sea. The concrete can handle fire better too.

Builders use microsilica in many tough jobs. It’s good for high-strength concrete in tall buildings. It’s perfect for industrial floors that get heavy wear. It works well in marine structures like piers exposed to saltwater. It’s used in shotcrete for tunnel linings or slope stabilization because it sticks well and sets fast. You find it in precast concrete parts needing high early strength. It helps repair materials bond strongly to old concrete. It makes mortar mixes tougher for tile setting or pointing brickwork. Microsilica makes concrete and mortar perform better in demanding situations.

Company Introduction

Welcome to Footprintbooks, a leading supplier in the international market for high-quality concrete admixtures. Our extensive product range includes superplasticizers, waterproofing agents, accelerators, and more, designed to meet diverse construction needs. With cutting-edge technology and stringent quality control, we ensure our products enhance durability, workability, and sustainability of concrete structures. Committed to excellence, we serve customers across the globe, offering tailored solutions and exceptional service. Partner with us for reliable and innovative concrete admixture solutions that build the foundations of tomorrow’s world.

If you have any questions, please feel free to contact us(nanotrun@yahoo.com).

Payment Methods

T/T, Western Union, Paypal, Credit Card etc.

Shipment Methods

By air, by sea, by express, as customers request.

5 FAQs of Micro silica for Concrete & Mortar Admixtures

Here are five common questions about micro silica for concrete and mortar.

What is micro silica? Micro silica is a very fine powder. It is a byproduct from making silicon metal. The particles are extremely small. This powder is also called silica fume. It is used in concrete mixtures.

Why add micro silica to concrete? Adding micro silica makes concrete stronger. It fills tiny spaces between cement particles. This creates a denser concrete. Denser concrete resists water better. It also resists chemicals better. This means the concrete lasts longer. It prevents damage.

How much micro silica should be used? The typical amount is between 5% and 10%. This is by weight of the cement in the mix. Using the right amount is crucial. Too little won’t help much. Too much can make the concrete hard to work with. Follow the supplier’s advice. Adjust based on your specific project needs.

Does micro silica affect how concrete is handled? Yes, it does. Micro silica makes the concrete mixture stickier. This can make placing the concrete harder. The mixture might also set faster. Adding special chemicals helps. These chemicals improve how the mixture flows. They give you more time to place the concrete. Adding extra water is not a good solution. Adding water weakens the concrete.

Is micro silica safe to handle? Micro silica is safe when handled correctly. The fine dust can be breathed in. Breathing it in is bad for your lungs. Wear a proper dust mask when handling the powder. Good ventilation is important in mixing areas. Always follow safety guidelines.

(Micro silica for Concrete & Mortar Admixtures)