Micro Silica also known as Silica fume. It is a by product of producing silicon metal or ferrosilicon alloys in smelter using electric arc furnaces. It is a grey coloured powder, pozzolanic in nature.
Applications
Concrete Industry
Refractory
Rubber Industry
Anti caking agent
Pellet Binder
Microsilica (silica fume) is a by-product of silicon metal or ferrosilicon industries, is an amorphous silicon dioxide SiO2. This product reacts chemically with the calcium hydroxide in the cement paste which yields a calcium silicate hydrate gel that significantly enhances strength and durability. The super fine microsilica fills the voids between cement particles creating a very dense, less permeable concrete.
Physical characteristics:
Color: gray or gray white powder
Bulk density: 320-700 kg/m3
Chemical composition:
Items SiO2 Al2O3 Fe2O3 MgO CaO Na2O Moisture
Content
75-98%
1.0-0.2%
0.9-0.3%
0.7-0.1%
0.3-0.1%
1.3-0.2%
Fineness:
the fineness of the silica fume is less than 1 1/4m, and the average particle size is 0.1 0.3 1/4m, and the specific surface area is 20 - 28 m2/g. The fineness and specific surface area are about 80-100 times of cement and 50-70 times of fly ash.
Maxtech Micro Silica supplies will be as per QCS 2014 (ASTM C1240):
SiO2: >/= 92%
LOI: <6
Moisture Content: <1%
Activity Index at 7 days: > 105%
Application & Benefits of Microsilica (Silica fume):
In concrete:
The micro silica fume powder can be well filled in the cement particle space and make the slurry denser, mainly in the following:
Increase strength
Increase the density
Frost resistance
Early strength
Anti abrasion and anti-cavitation resistance
In Refractories:
Microsilica powder is widely used in the refractory industry. It has an important effect on the improvement of the amorphous refractory.
The production of amorphous and shaped refractory products as additives makes the strength and high temperature performance greatly improved.
Other Application:
Elastomers/Polymers
Microsilica, also known as silica fume, it is a very fine pozzolanic material, composed of amorphous silica produced byelectric arc furnaces as a byproduct of the production of elemental silicon or ferro silicon alloys.Microsilica can be used in a variety of cementitious products such as concrete,grouts,and mortars as well as elastomer, polymer,refractory, ceramic and rubber applications.
Silica fume is widely used in concrete field: High-performance project, such as bridge, airport, hydropowder station, seawall, railway projects.
1)Enhance the mechanical properties of concrete.
High strength and early strength has been used in substructures of high-performance concrete.
2)Improve the durability of concrete:
Significant improvements can be seen in the permeability resistance, abrasion resistance, anti-corrosion against chlorideion and anti-freezing of concrete.
3)Enhance consructability.
Improve shotconrete, increase easly strength, control temperature contractors can take advantage of the properties of silica fume concrete to expedite projects or to achieve properties that migh otherwise be impossible to achieve.
Silica fume, also known as condensed silica fume or microsilica, is a spherical sub-micron amorphous silicon dioxide used in many applications.
Silica fume is a co-product of silicon or ferrosilicon production, consisting of ultrafine (sub-micron), amorphous, non-porous, perfectly spherical silicon dioxide (SiO2) particles, with purity levels of 85 to 99 %.
The main effect of these ultra-fine particles is to greatly improve particle packing and produce a highly pozzolanic reaction in concrete and other cementitious bond systems where the silicon dioxide reacts with calcium hydroxide, heightening performance levels and the strength and durability of these materials.
Additionally, silica fume, because of its amorphous (non-crystalline) structure and its specific area, provides other useful features to various applications, including improved sintering capabilities and enhanced high temperature performance of refractory castables, resulting in reactions between microsilica and other components of the refractory mix.
To summarize, silica fume has two key features which alone or in combination are the basis for its high performance:
The nano-sized spherical non-porous particles create an efficient "filler effect"
Primary particles have an average diameter of about 0.15 �¼m (150 nanometers)
Microsilica is a highly reactive form of silica producing a "chemical effect"
Thanks to its amorphous nature and high specific surface area.
Micro silica also known as fume, is an amorphous (non-crystalline) polymorph of silicon dioxide, silica. It is an ultrafine powder collected as a by-product of the silicon and ferrosilicon alloy production and consists of spherical particles with an average particle diameter of 150 mm. The main field of application is as pozzolanic for high performance concrete because of its extreme fineness and high silica.
Applications :
Silica is added to Portland cement concrete to improve its properties, in particular its compressive strength, bond strength, and abrasion resistance. These improvements stem from both the mechanical improvements resulting from addition of a very fine powder to the cement paste mix as well as from the pozzolanic reactions between the silica fume and free calcium hydroxide in the paste.
Advantages :
Addition of silica also reduces the permeability of concrete to chloride ions, which protects the reinforcing steel of concrete from corrosion, especially in chloride-rich environments such as coastal regions and those of humid continental roadways and runways (because of the use of deicing salts) and saltwater bridges.
26082 Micro Silica (Silica Fume) Suppliers
Short on time? Let Micro Silica (Silica Fume) sellers contact you.
We are specialized in offering superior quality Silica Sand that is acid soluble bridging agent. It is used in manufacturing of glass, fillers & extenders, abrasives & polishes, silica bricks, specialty coatings, ceramics rubber and optics. It is processed keeping in mind international quality standards and is offered at very affordable price to the clients.
Features Of Silica Sand
Purity
Highly effective
Quality tested
Easily soluble
Silica is mainly used as a carrier of agricultural chemicals. Finely crushed silica powder is coated with agricultural chemicals and sold on the market for agricultural use. Silica itself has no effects; it merely serves as a carrier, and so can be dispersed without affecting the farmland, which makes it advantageous as a core material.
It's used as Fire-resistant product powder, Agricultural chemical carrier, Agricultural chemical carrier, Construction board
Jihe micro silica jh85
Jh85 is a densified dry powder admixture for portland cement concrete
And mortars.
Jh85 is primarily consisted of fine silicon dioxide particles in a noncrystalline
Form.
Jh85 meets the requirements of astm c-1240 and contains
A minimum of 85% silicon dioxide (sio2)
Parameters standard value :
Silicon dioxide(sio2) min 85 %
Loss on ignition (l.O.I) at 975¡æ max 4 %
Moisture content max 3 %
Percent retained on 45|¨¬m (325 sieve) max 2 %
Bulk density 250-300 kg/m3 and 600-800 kg/m3
Usage:jh85 is usually for cement and concrete.
Jihe micro silica jh90
Jh90 is a pozzolanic material that consists primarily
Of fine silicon dioxide particles in a non-crystalline form.
Jh90 meets the requirements of astm c-1240 and contains
Minimum of 90% silicon dioxide (sio2)
Loss on ignition (l.O.I) max 3 %
Moisture content(h2o ) max 1.0 %
Percent retained on 45|¨¬m (325 sieve) max 2.0 %
Package: more than 600kg/jumbo bags
25kg small plastic woven bags. (according to your demand)
Jh90 is used in cement, concrete, refractory and construction
Materials.
b. Price of product: negotiable
c. Product origin: Kuwait
d. Key Specifications/Special Features: SIO2 90-95%
e. Harmonization System (HS) Code :
f. Minimum Order Size : 100mt
Guru Corporation is the Gujarat's largest manufacturer and supplier with superior market experience since last 10 years of Silica Fume.We have a good and advanced technology for this product. G-Chem is always superb product for any RMC. and also we provide Bulker facility for smooth transportation. Our all customers are always proud on us.
Silica sand is one of the most common varieties of sand found in the world. It is used for a wide range of applications. Sand is the general term for broken down granules of minerals or rocks, technically between about one-sixteenth of a millimeter to two millimeters in diameter, falling between silt and gravel in the spectrum of sizes. There are many varieties of sand in the world, each with their own unique composition and qualities.
Silica is another name for Silicon dioxide, SiO2, of which quartz is a specific latticed structure. So, silica sand is quartz that over the years, through the work of water and wind, has been broken down into tiny granules. These granules can be used for many different purposes and can be found in most non-tropical regions of the world.
Silica Fume (Micro Silica) is mainly used as cement admixture or concrete binder to improve the performance of cement or concrete with higher strength abrasion resistance, erosion resistance, corrosion resistance and permeability resistance
Micro Silica Powder that we offer is well processed and therefore, is the perfect option on which buyers can easily rely. We are named among the renowned Manufacturers, Exporters and Suppliers of Micro Silica Powder. It is formulated under the strict vigilance of experts so as to ensure its accurate composition. One can place retail as well as bulk orders for Micro Silica Powder with us.
Description : Silica fume consists of very fine particles. Because of its extreme fineness and high silica content, silica fume is a highly effective pozzolanic material. Being a highly reactive pozzolan, silica fume chemically reacts with the calcium hydroxide present in the cement paste, creating a stronger calcium silica hydrate 'making it sticky'. The result is improved paste to aggregate bond (excellent for shotcrete) and higher concrete strengths. Silica Fume is typically grey in colour and is categorised as a supplementary cementitious material (SCM). Silica Fume is compliant to AS/NZ 3582.3:2002 and is described as a Densified Amorphous Fumed Silica.
Typical Uses : Silica Fume can be used to produce all grades of concretes. The chemical and physical properties of Silica Fume can greatly enhance the strength performance and the bonding properties of concrete. Silica Fume can be used in various applications and projects: Commercial, Civil, Mining and Marine projects. Silica Fume is suitable for inclusion in general concrete mix designs and in particular has application in high strength/ performance concretes and shotcrete / spray mixes.
Features : The addition of Silica Fume can provide;
Increase compressive strength
Reduces chloride ion permeability
Increase abrasion resistance
Enhanced sulphate resistance
Improved durability
Enhanced resistance to chemical attack and deterioration
Increase bond strength
