What is densified microsilica?

Densified Silica Fume (DSF) (9994039) is a ready-to-use dry densified silica fume used to produce very durable, high strength concrete with very low permeability and low rebound shotcrete.

What is the difference between densified and Undensified silica fume?

Both undensified and densified silica fumes have particular weight sizes. And you can detect the difference by simply weighing both silica fumes. The weight size for densified or compacted silica fume is generally between 550-650KG/m3. On the other hand, the weight of undensified silica fume is between 250-350KG/m3.

What is microsilica made of?

Microsilica (silica fume) is a byproduct from silicon metal or ferrosilicon industries,is an amorphous silicon dioxide – SiO2 which is generated as a gas in submerged electrical arc furnaces during the reduction of very pure quartz. As the molten metal is produced, a silica-based gas is emitted.

What is microsilica powder?

Product Description. Micro Silica Powder consists primarily of amorphous (non-crystalline) silicon dioxide (SiO2). Because of its fine particles, large surface area, and the high SiO2 content. It is a very reactive pozzolan when used in concrete.

How is microsilica made?

Silica fume, also known as microsilica, is an amorphous polymorph of silicon dioxide, silica. It is a by-product of the carbothermic reduction of high purity quartz in electric arc furnaces in the production of silicon and ferrosilicon alloys.

What is the difference between silica fume and microsilica?

The only difference between silica fume and microsilica is the name. Both terms refer to the same thing. Silica fume is also known as microsilica, and it is an amorphous polymorph of silicon dioxide. Apart from microsilica, silica fume is also called micro silica, condensed silica fume, and silica dust.

Why is microsilica used in concrete?

Microsilica or silica fume is an excellent admixture for concrete as it leads to better engineering properties. It reduces thermal cracking, improves durability, and increases strength. Silica fume concrete has a number of construction applications.

What is microsilica used for?

How do you use microsilica in concrete?

Micro-silica in concrete contributes to strength and durability two ways: As a pozzolanic material, micro-silica provides a more uniform distribution and a greater volume of hydration products. As a filler, micro-silica decreases the average size of pores in the cement paste.

How does microsilica work in concrete?

HOW MICROSILICA WORKS IN CONCRETE. Microsilica in concrete contributes to strength and durability two ways: as a pozzolan, 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.

Does silica increase strength?

The results show that the increase in compressive strength of mortar containing silica fume, as a partial replacement for cement, greatly contributes to strengthening the bond between the cement paste and aggregate.