Advantages of silica fume in concrete:
(1) silica fume is a kind of neutral inorganic filler with very stable physical and chemical properties. It does not contain crystalline water, does not participate in the curing reaction, and does not affect the reaction mechanism.
(2) good infiltration for various kinds of resin, good adsorption performance, easy to mix, no agglomeration phenomenon.
(3) the size distribution of silica fume is reasonable, strong densification, large hardness and wear resistance. It can greatly improve the tensile strength, compressive strength, impact strength and wear resistance of the cured products, and the abrasion resistance can be increased 0.5 – 2.5 times.
(4) it can increase the thermal conductivity, change the adhesive viscosity and increase the flame retardancy.
(5) the exothermic peak temperature of curing reaction of epoxy resin can be reduced, the linear expansion coefficient of solidified products and the shrinkage rate of solidified products can be reduced, so as to eliminate internal stress and prevent cracking.
(6) due to the fine grain size and reasonable distribution of silica fume, it can effectively reduce and eliminate precipitation and stratification.
(7) pure silicon powder, low content of impurities, stable physical and chemical properties, so that the curing material has good insulation properties and arc resistance.
(8) the chemical composition of silica fume is silica (SiO2), which belongs to inert material. It doesn’t react with most acids or alkaloids. The silicon powder is evenly distributed and covered on the surface of objects. It has strong corrosion resistance and cavitation resistance increased 3-16 times.
(9) small bulk density, 0.2 – 0.8, or 1 – 2.2. As polymer filling material, it can reduce the cost of the product by reducing the amount of loading and saving the amount of polymer.
(10) frost resistance is good, and the relative elastic modulus of micro silica fume is 10 to 20% after 300-500 fast freeze-thaw cycles, while the average elastic modulus of ordinary concrete is 30 to 73% after 25-50 cycles. Therefore, the frost resistance of concrete can be improved.
(11) early strength, microsilica concrete can shorten the induction period and have the characteristics of early strength.
Disadvantages of silica fume in concrete:
1. dry shrinkage.
Silica fume concrete shrinkage rate is large, especially early dry shrinkage, easy to make crack in the application of silica fume concrete, affect the overall strength and using effect. For example, after construction, strengthening water and sprinkler maintenance can decrease this problem, but the cracks are still unavoidable in many construction projects.
2, the construction is difficult.
The workability of concrete is an important parameter in the design of concrete mix proportion, silica fume concrete workability is poor, is not easy to make the concrete vibrating close grained, not easy to plaster, influencing the smoothness of concrete quality and uniformity of the surface.
3, it is easy to produce temperature cracks.
Concrete with silica fume early strength develop quickly, the corresponding concrete hydration heat dissipation quickly, resulting to rise concrete hydration heat temperature, easy to produce high temperature stress in the concrete, the stress concentration in the top of the dry shrinkage crack, make dry shrinkage crack extend even through the formation of transfixion cracks.
Silica fume used in Concrete: https://microsilica-fume.com/silica-fume-concrete.html
If you want to know more about silica fume in concrete technology, please contact us by E-mail sales@superior-abrasives.com or directly leave your message on the following form, we will reply you soon, thank you.
Silica fume powder is black or gray in color, and is available in several product forms and packaging options. Our products include:
Undensified Silica Fume (320-360kg/m³)
Densified Silica Fume (630-680 kg/m³)
Densified Silica Fume is the most revolutionary concrete additive to have been developed in recent times.
Silica Fume Application:
Concrete, Refractory, High Performance Concrete, Oil and Gas Industry, Ceramics, Concrete Roofing, Wall boards, Cementation Repair Products, Concrete Tile & Panels, FCB, Shotcrete, Polymers & Elastomers and (SCC) Self-Compacting Concrete.
ADVANTAGES
. Lowers concrete permeability.
. Significantly increases concrete durability.
. Increases ultimate strength gain.
. Beneficial in all types of high strength concrete applications.
. Improves bond strength to steel.
. Significantly reduces alkali-silica reactivity.
. Provides excellent resistance to sulfate or seawater attack.
. Reduces steel corrosion.
. Improves freeze/thaw durability of concrete.
Packaging & Delivery
10kg soluble paper bags x 84 on the pallets.
20kg soluble paper bags x 42 on the pallets.
950kg plastic woven bags x 2 on the pallets(with or without bottom output )
1000kg plastic woven bags x 2 on the pallets(with or without bottom output )
500kg plastic woven bags x 2 on the pallets (with or without bottom output )
We can also produce according to your requirement.
Our Plant:
Storage of microsilica fume:
Silica fume should be kept dry, out of weather and the elements.
Safety and handing precautions:
Silica fume is generally considered a nuisance dust. Use and handling of silica fume does not represent a health risk when normal safety rules are observed. Direct contact may cause irritation of eyes. Prolonged contact may cause skin irritation. Inhalation may cause respiratory irritation resulting in coughing and shortness of breath. This product may be harmful if swallowed. Do not get in eyes and avoid prolonged skin contact. Do not take internally. Wash thoroughly with water after handling.
Advantages of silica fume in concrete:
(1) silica fume is a kind of neutral inorganic filler with very stable physical and chemical properties. It does not contain crystalline water, does not participate in the curing reaction, and does not affect the reaction mechanism.
(2) good infiltration for various kinds of resin, good adsorption performance, easy to mix, no agglomeration phenomenon.
(3) the size distribution of silica fume is reasonable, strong densification, large hardness and wear resistance. It can greatly improve the tensile strength, compressive strength, impact strength and wear resistance of the cured products, and the abrasion resistance can be increased 0.5 – 2.5 times.
(4) it can increase the thermal conductivity, change the adhesive viscosity and increase the flame retardancy.
(5) the exothermic peak temperature of curing reaction of epoxy resin can be reduced, the linear expansion coefficient of solidified products and the shrinkage rate of solidified products can be reduced, so as to eliminate internal stress and prevent cracking.
(6) due to the fine grain size and reasonable distribution of silica fume, it can effectively reduce and eliminate precipitation and stratification.
(7) pure silicon powder, low content of impurities, stable physical and chemical properties, so that the curing material has good insulation properties and arc resistance.
(8) the chemical composition of silica fume is silica (SiO2), which belongs to inert material. It doesn’t react with most acids or alkaloids. The silicon powder is evenly distributed and covered on the surface of objects. It has strong corrosion resistance and cavitation resistance increased 3-16 times.
(9) small bulk density, 0.2 – 0.8, or 1 – 2.2. As polymer filling material, it can reduce the cost of the product by reducing the amount of loading and saving the amount of polymer.
(10) frost resistance is good, and the relative elastic modulus of micro silica fume is 10 to 20% after 300-500 fast freeze-thaw cycles, while the average elastic modulus of ordinary concrete is 30 to 73% after 25-50 cycles. Therefore, the frost resistance of concrete can be improved.
(11) early strength, microsilica concrete can shorten the induction period and have the characteristics of early strength.
Disadvantages of silica fume in concrete:
1. dry shrinkage.
Silica fume concrete shrinkage rate is large, especially early dry shrinkage, easy to make crack in the application of silica fume concrete, affect the overall strength and using effect. For example, after construction, strengthening water and sprinkler maintenance can decrease this problem, but the cracks are still unavoidable in many construction projects.
2, the construction is difficult.
The workability of concrete is an important parameter in the design of concrete mix proportion, silica fume concrete workability is poor, is not easy to make the concrete vibrating close grained, not easy to plaster, influencing the smoothness of concrete quality and uniformity of the surface.
Contact us to discuss your requirements of 95% Densified Silica Fume. Our experienced sales team can help you identify the options that best suit your needs.
3, it is easy to produce temperature cracks.
Concrete with silica fume early strength develop quickly, the corresponding concrete hydration heat dissipation quickly, resulting to rise concrete hydration heat temperature, easy to produce high temperature stress in the concrete, the stress concentration in the top of the dry shrinkage crack, make dry shrinkage crack extend even through the formation of transfixion cracks.
Silica fume used in Concrete: https://microsilica-fume.com/silica-fume-concrete.html
If you want to know more about silica fume in concrete technology, please contact us by E-mail sales@superior-abrasives.com or directly leave your message on the following form, we will reply you soon, thank you.
Silica fume, also known as microsilica, is an amorphous (non-crystalline) polymorph of silicon dioxide, silica. It is an ultrafine powder collected as a by-product during silicon and ferrosilicon alloy production.
Silica fume powder is black or gray in color, and is available in several product forms and packaging options. Our products include:
Undensified Silica Fume (320-360kg/m³)
Densified Silica Fume (630-680 kg/m³)
Densified Silica Fume is the most revolutionary concrete additive to have been developed in recent times.
Silica Fume Application:
Concrete, Refractory, High Performance Concrete, Oil and Gas Industry, Ceramics, Concrete Roofing, Wall boards, Cementation Repair Products, Concrete Tile & Panels, FCB, Shotcrete, Polymers & Elastomers and (SCC) Self-Compacting Concrete.
ADVANTAGES
. Lowers concrete permeability.
. Significantly increases concrete durability.
. Increases ultimate strength gain.
. Beneficial in all types of high strength concrete applications.
. Improves bond strength to steel.
. Significantly reduces alkali-silica reactivity.
. Provides excellent resistance to sulfate or seawater attack.
. Reduces steel corrosion.
. Improves freeze/thaw durability of concrete.
Packaging & Delivery
10kg soluble paper bags x 84 on the pallets.
20kg soluble paper bags x 42 on the pallets.
950kg plastic woven bags x 2 on the pallets(with or without bottom output )
1000kg plastic woven bags x 2 on the pallets(with or without bottom output )
500kg plastic woven bags x 2 on the pallets (with or without bottom output )
We can also produce according to your requirement.
Our Plant:
Storage of microsilica fume:
Silica fume should be kept dry, out of weather and the elements.
Safety and handing precautions:
Silica fume is generally considered a nuisance dust. Use and handling of silica fume does not represent a health risk when normal safety rules are observed. Direct contact may cause irritation of eyes. Prolonged contact may cause skin irritation. Inhalation may cause respiratory irritation resulting in coughing and shortness of breath. This product may be harmful if swallowed. Do not get in eyes and avoid prolonged skin contact. Do not take internally. Wash thoroughly with water after handling.
The company is the world’s best Silica Fume for Refractories supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.