ASTM C 1240 standard Densified Microsilica Application in Concrete
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- Supplier: Ningxia Efreegood Imp. & Exp. Co. Ltd.
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Product Overview
Description
Product Description
Microsilica
Microsilica ,also called silica fume or micro silica, is a byproduct of production silicon metal or ferrosilicon alloys. Silicon metal and alloys are produced in electric furnaces.The raw materials are quartz,coal and woodchips. The smoke that results from furnace operation is collected and sold as silica fume, silica fume consists primarily of amorphous(non-crystalline) silicon dioxide(SiO2),its average granule diameter is 0.15~0.20um,specific surface area is 15000~20000m2/kg,and it has extremely strong surface active.
Why need to add silica fume in concrete?
Because of construction materials, microsilica (silica fume) can fill the pores between cement and concrete particles, and form gel with hydration products, and react with basic material magnesium oxide to form gel. It can greatly improve the strength and density of concrete, and is widely used in refractory, concrete, industrial floor, dry powder mortar (or dry mixed mortar), grouting material, cementing wellhead, external wall insulation and other industries.
Densified Silica Fume
Densified Silica Fume is the most revolutionary concrete additive to have been developed in recent times.
Densified Silica Fume is black or gray in color, and is available in several product forms and packaging options.
Specification
85% Microsilica Fume Specifications:
Silica fume is produced in conformance with the ASTM specifications. The quality is controlled and monitored throughout the entire production process to ensure that it meets or exceeds specification requirements。
The above typical value is just for reference.
92% Microsilica Fume Specifications:
The above typical value is just for reference.
Packing & Delivery
DELIVERY:
Supply Ability:3000 Metric Tons per Month.
Port: Xingang, Tianjin ,China
Storage:Silica fume should be kept dry, out of weather and the elements.
APPLICATION:
Microsilica are classified as various grades and can be used in Concrete, Oilwell cement, Refractory and Fertilizer industries.The early strength of concrete or special cement compound to meet the oil Well,marine oil drilling platform,harbor terminals,railway bridges highways,airport runways,tunnels and urban high-rise building projects.
ADVANTAGES:
1) Concrete or Shotcrete
* Increase its density and strength, improve the performance on its durability, impact resistance, corrosion resistance,anti-permeability and frost resistance etc
2) Refractory material & Ceramics material
* Greatly improve its density, strength and high temperature performance.
* Increase its density and strength, improve the performance on its durability, impact resistance, corrosion resistance,anti-permeability and frost resistance etc
2) Refractory material & Ceramics material
* Greatly improve its density, strength and high temperature performance.
3) Cementitous Repair Products (Mortars & Grouts)
* Low permeability, increase resistance from chlorides, acids, nitrates and sulfate etc.
4) Oil Well Grouting
* Increase durability and compressive strength, decrease permeability, better control of gas leakage
* Low permeability, increase resistance from chlorides, acids, nitrates and sulfate etc.
4) Oil Well Grouting
* Increase durability and compressive strength, decrease permeability, better control of gas leakage
5)Concrete Tile, roofing & wallboard, panels
* Lightweight and improve the strength
* Lightweight and improve the strength
6) Polymers & rubber product
7) other application, such as waterglass industry, thermal insulation material etc
7) other application, such as waterglass industry, thermal insulation material etc
SILICA FUME CONCRETE
Silica Fume Concrete is widely used in concrete and fiber cement industries. In addition to its pozzolanic properties its is also a very good filler due to its particle size. These combined properties lead to an extended life expectancy in corrosive environments (resistance to chlorides, acids and sulphates) and improved strength.
High performance concrete containing microsilica fume is one of the more important advanced materials necessary in the effort to rebuild our nation’s infrastructure. Silica fume delivers increased toughness and resistance to abrasion and corrosion, improving sustainability and life-cycle cost efficiency.
Some examples of microsilica concrete include use for highway bridges, parking decks, marine structures and bridge deck overlays and other applications that are typically subject to deterioration caused by corrosion, abrasion and chemical degradation. MicroSilica fume improves concrete protection against deicing salts, seawater, traffic and heavy impact and other destructive environments.
High performance concrete containing microsilica fume is one of the more important advanced materials necessary in the effort to rebuild our nation’s infrastructure. Silica fume delivers increased toughness and resistance to abrasion and corrosion, improving sustainability and life-cycle cost efficiency.
Some examples of microsilica concrete include use for highway bridges, parking decks, marine structures and bridge deck overlays and other applications that are typically subject to deterioration caused by corrosion, abrasion and chemical degradation. MicroSilica fume improves concrete protection against deicing salts, seawater, traffic and heavy impact and other destructive environments.
SILICA FUME SHOTCRETE
Silica Fume Hydraulic is particular due to its high free CaO content, used in a fast setting concrete.Concretes with Silica Fume Hydraulic have higher strength than the average at early age (24 hr and 48 hr).
Silica fume use for shotcrete delivers greater economy and time savings, and is a more efficient use of sprayed concrete. Silica fume produces superior shotcrete for use in rock stabilization, mine tunnel linings, and rehabilitation of deteriorating bridge and marine columns and piles. Greater bonding strength ensures an outstanding performance of both wet and dry process shotcrete applications, with less rebound loss and thicker product applications.
SILICA FUME REFRACTORY
Silica Fume has a stable pH and a low impurity level and is perfectly adapted to the requirements of refractory castables. Its use improves the flow, mechanical properties (especially hot strength), and durability (via permeability reduction).
Silica fume use in refractory castables provides better particle packing. Silica fume use requires less water, while maintaining the same flow characteristics. Silica fume use also promotes low temperature sintering, and the formation of mullite in the matrix of castables. This allows production of castables which have a low permeability to gas, slag and metal penetration. Castables made with silica fume are stronger than non-silica fume castables, especially at high temperatures and higher density. Silica fume use will attain lower porosity and are more volume stable.
Silica fume use in refractory castables provides better particle packing. Silica fume use requires less water, while maintaining the same flow characteristics. Silica fume use also promotes low temperature sintering, and the formation of mullite in the matrix of castables. This allows production of castables which have a low permeability to gas, slag and metal penetration. Castables made with silica fume are stronger than non-silica fume castables, especially at high temperatures and higher density. Silica fume use will attain lower porosity and are more volume stable.
SILICA FUME OIL WELL
Silica fume can be used for a primary placement of grout as a hydraulic seal in the well bore, or secondary applications such as remedial operations including leak repairs, splits, closing of depleted zones. The addition of silica fume enables a well to achieve full production potential. The silica fume works as a blocking effect in the oil well grout, which prevents gas migration and other advantages to enhance well productivity.Semi-Automatic PET Bottle Blowing Machine Bottle Making Machine Bottle Moulding Machine PET Bottle Making Machine is suitable for
producing PET plastic containers and bottles in all shapes.
producing PET plastic containers and bottles in all shapes.
Company Profile
ABOUT US
Ningxia Efreegood Imp. & Exp. Co., Ltd. was founded in 2006. In the past 16 years, we have not only established long-term and good cooperative relations with many domestic central enterprises and local leading
enterprises, but also sold our products to more than 20 countries in the world. Our products have been recognized and praised by the international market.
Our Advantages
1. With over 16 years experiences, EFREEGOOD company has became a leading export microsilica supplier in China.
2. EFREEGOOD has established long-term and good cooperative relations with many factory.We can make sure the timely delivery.
3. EFREEGOOD offers high-quality products at reasonable prices. We provide professional services to each customer based on their needs.
4. All of our products are produce by our professional workman and we have our high work effect foreign trade team, you can totally believe our service.
5. We have many years experience for export, we cherish every order from our honor.
2. EFREEGOOD has established long-term and good cooperative relations with many factory.We can make sure the timely delivery.
3. EFREEGOOD offers high-quality products at reasonable prices. We provide professional services to each customer based on their needs.
4. All of our products are produce by our professional workman and we have our high work effect foreign trade team, you can totally believe our service.
5. We have many years experience for export, we cherish every order from our honor.
CONTACT
We are hoping to cooperate with partners in global market to create win-win business.
If you are interested in our products, Any more inquires, please let us know., best price and free samples will be sent to you right away! Thank you very much.
* Offer free samples, you only need to pay the freight.
* Check and confirm delivery.
If you are interested in our products, Any more inquires, please let us know., best price and free samples will be sent to you right away! Thank you very much.
SERVICE
* Instant reply and 24 hour online.
* Instant reply and 24 hour online.
* Offer free samples, you only need to pay the freight.
* Check and confirm delivery.
FAQ
1. how can we guarantee quality?
Always a pre-production sample before mass production;Always final Inspection before shipment;
2. Is silica fume reactive or not?
Silica fume has chemical and physical properties. It has fine particles, a large surface area, and is comprised of high SiO2
content. Therefore, it is a very reactive pozzolana.
3. How durable is concrete containing silica fume?
Concrete containing silica fume has very high strength and is, therefore, durable. Studies indicate that the addition of silica
fume to cement improves the durability of water impermeability and the carbonation resistance of the concrete. Adding silica fume to concrete also gives the concrete greater resistance to chloride penetration. Such concrete can be used in building parking structures, bridges, and bridge decks.
4. How can we apply silica fume?
Silica fume has different applications. Because of its high reactivity as a pozzolanic material, it is used to make high-strength concrete. This concrete gives architects and engineers greater design flexibility.
5. What does silica fume do to concrete?
When you add silica fume to concrete, at first, it seems inactive. However, after adding Portland cement and water to the mix,they all begin to react with each other. The primary chemical reactions will produce two chemical compounds.
6. What is the specific surface (m2/g) of silica fume?
The specific surface (m2/g) of silica fume typically ranges from 20 to 50 m2/g. This can be measured with the BET method or the nitrogen adsorption method.
9. Why should I add silica fume to concrete?
Silica fume reacts readily with the calcium hydroxide, which is produced during Portland cement hydration. Adding Silica fumes to concrete refines the pore structure. This then produces concrete with improved mechanical strength.
10. What is the difference between microsilica and silica fume?
Silica fume is simply another term for microsilica and can be used interchangeably. They both mean the same thing. Other names for silica fume include volatilized silica, condensed silica fume, and silica dust.
11.Is silica fume concrete?
Silica fume is not the same thing as concrete. Concrete is a construction material that’s composed of cement, fine
aggregates(sand), and coarse aggregates. When mixed with water, it hardens over time.
12. When is it better to add silica fume to concrete? Wet or dry?
Silica fume for use in concrete comes in both wet and dry forms. Manufacturers tend to add it while producing the concrete at a plant.
13. The color of silica fume black?
Dark grey, grey, light grey, and pure white.
Always a pre-production sample before mass production;Always final Inspection before shipment;
2. Is silica fume reactive or not?
Silica fume has chemical and physical properties. It has fine particles, a large surface area, and is comprised of high SiO2
content. Therefore, it is a very reactive pozzolana.
3. How durable is concrete containing silica fume?
Concrete containing silica fume has very high strength and is, therefore, durable. Studies indicate that the addition of silica
fume to cement improves the durability of water impermeability and the carbonation resistance of the concrete. Adding silica fume to concrete also gives the concrete greater resistance to chloride penetration. Such concrete can be used in building parking structures, bridges, and bridge decks.
4. How can we apply silica fume?
Silica fume has different applications. Because of its high reactivity as a pozzolanic material, it is used to make high-strength concrete. This concrete gives architects and engineers greater design flexibility.
5. What does silica fume do to concrete?
When you add silica fume to concrete, at first, it seems inactive. However, after adding Portland cement and water to the mix,they all begin to react with each other. The primary chemical reactions will produce two chemical compounds.
6. What is the specific surface (m2/g) of silica fume?
The specific surface (m2/g) of silica fume typically ranges from 20 to 50 m2/g. This can be measured with the BET method or the nitrogen adsorption method.
9. Why should I add silica fume to concrete?
Silica fume reacts readily with the calcium hydroxide, which is produced during Portland cement hydration. Adding Silica fumes to concrete refines the pore structure. This then produces concrete with improved mechanical strength.
10. What is the difference between microsilica and silica fume?
Silica fume is simply another term for microsilica and can be used interchangeably. They both mean the same thing. Other names for silica fume include volatilized silica, condensed silica fume, and silica dust.
11.Is silica fume concrete?
Silica fume is not the same thing as concrete. Concrete is a construction material that’s composed of cement, fine
aggregates(sand), and coarse aggregates. When mixed with water, it hardens over time.
12. When is it better to add silica fume to concrete? Wet or dry?
Silica fume for use in concrete comes in both wet and dry forms. Manufacturers tend to add it while producing the concrete at a plant.
13. The color of silica fume black?
Dark grey, grey, light grey, and pure white.
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