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Microsilica

StrengthCrete - Microsilica (Silica Fume)

Microsilica (Silica Fume) from StrengthCrete is a concrete additive for high-strength, high-performance concrete. It helps make concrete cohesive and impermeable, thereby enhancing its physical as well as mechanical properties. The use of Micro silica along with cement can also lead to a greater economy and faster execution of projects. Microsilica is a reliable, cost-effective concrete additive designed for ease of mixing, placing, and finishing.

It is a mineral admixture made of very fine spherical silicon dioxide with an extremely high surface area. As a result of the pozzolanic and cementitious properties of Silica Fume, it can create an impact on concrete behavior in many ways, thus improving the quality of concrete. As Microsilica is an essential element of modern refractory technology, it is very compatible with different types of cement, and this quality, in turn, helps prevent the conversion of high-alumina cement. The desired characteristics of both pozzolanic materials combine to produce optimally durable concrete. Micro-silica provides a more uniform distribution and a greater volume of hydration products, decreasing the average size of pores in the cement paste.

Benefits of StrengthCrete(Microsilica)

  • Complies with ASTM C1240.
  • Available in convenient pack sizes of 25Kgs & 1000 Kgs.
  • Provides cohesive and impermeable concrete. Suitable for making high-strength-high performance concrete.
  • Helps improve physical as well as mechanical properties of concrete.
  • Helps in preventing Chloride initiated corrosion, Alkali-aggregate reaction, Sulphate attack, etc.
  • Helps in achieving greater economy since higher strength of concrete enables reduction in sections.
  • No special equipment required for mixing, placing or finishing.
  • Compatible with all types of cements and admixtures.
  • Backed by team of specialists to ensure optimum product performance and cost efficiency.

Dosage of StrengthCrete

General dosage of StengthCrete in concrete can be 4 to 15% of the weight of the cement. However, a Structural Engineer's advice is recommended for deciding the actual dosage.

Physical & Chemical analysis of StrengthCrete & StrengthCrete+

Property Specifications StrengthCrete StrengthCrete+
SiO2 % Min-85% 85% 92
AI203 - - -
>45 micron Max-10% - 1% - 1%
CaO - <1< /td> <1< /td>
Fineness M2/gm Min-15 17 20
Specific Gravity - 2.22 2.17
Loss & Ignition(L.0.1) % Max-6.0% 3.19 2.96
Moisture content % Max-3.0% 0.85 0.54
Bulk density Kg/M3 Min 500-700 610 630

Let’s Find Out How StrengthCrete Microsilica Works in Concrete

As mentioned above, Microsilica is noted for its pozzolanic effect. When water is mixed with cement, hydration occurs, forming two products: Calcium silicate hydrate and Calcium Hydroxide. When Micro silica is added to cement, it reacts and reduces the weak Calcium Hydroxide, simultaneously providing the much-desired binding strength. Another remarkable effect of Microsilica is the micro-filler effect. Since Silica Fume is an extremely material, the addition of Micro silica can fill the water spaces in fresh concrete.

Microsilica provides a more uniform distribution and a greater volume of hydration products. As a filler, Microsilica decreases the average size of pores in the cement paste. The addition of Micro silica to a concrete alters the cement paste structure. Because the Micro silica particles are so small, they disperse among and separate the cement particles. The resulting fine, uniform matrix can give markedly higher compressive, flexural, and bond strength. Microsilica reduces the rate of carbonation, decreases permeability to chloride ions, imparts high electrical resistivity, and has little effect on oxygen transport. Therefore, Microsilica concrete can be expected to be strongly protective of and embedments. Silica Fume reacts rapidly, providing high early strength and durability.

Technical advantages of Microsilica From StrengthCrete

  • Improvements in Physical Properties of Concrete: Microsilica makes concrete more cohesive and therefore less prone to segregation. Microsilica requires less water in concrete, which helps reduce bleeding considerably. A dosage of Microsilica in excess of 5% of cement can help completely eliminate bleeding.
  • Improvements in Mechanical Properties of Concrete: Microsilica makes concrete high-strength and high-performance, which helps enhance other mechanical properties of concrete, such as modulus of elasticity or flexural strength. This property of Microsilica can help reduce the sections of structural members, leading to: more space in residential and commercial buildings and greater flexibility in designing infrastructures such as bridges and flyovers.
  • Microsilica makes concrete impermeable due to the secondary hydration process. This property of Microsilica helps eliminate the possibility of corrosion of reinforcing steel due to chloride and sulfate attacks. It also helps eliminate the risk of alkali-aggregate reactions in areas where aggregates are alkali-reactive.

Application

info@precisiondrawell.com

+91 99230 22000

+919923022000