纳米二氧化硅

Hangzhou Jiupeng New Materials

Traditional cement-based materials have lower strength, and adding a certain amount of nano silica instead of some ordinary concrete aggregates can improve the performance of concrete. This product has undergone special nano treatment to make the surface energy of nano silica higher, which is easy to form a bond with the hydration products in the cement stone to produce CSH gel. Moreover, nano silica has a special network structure, which can build a new network on the basis of the original network structure of the cement paste, thus forming a three-dimensional network structure, which can greatly improve the physical and mechanical properties and durability of the cement paste. Therefore, nano silica can be applied to high-strength cement-based pavement materials.

Technical indicators of nano silica:

project

index

appearance

White powder

model

cy-SH30

Average particle size, nm

thirty

Specific surface area, m2/g

200±10

surface treatment

Nano treatment agent

Nano silica content%

≥ 99.5

Apparent density (g/L)

40-60

PH value

5-7

Loss on ignition (%) 950 ℃ x2h

≤6.0

Application characteristics of nano silica:

1. Adding nano silica to cement mortar can improve the compressive and flexural strength of cement mortar at various ages. 

2. Can reduce the slump and expansion of concrete.

3. Can increase the self shrinkage strain of concrete; Improve the Cl - permeability and frost resistance durability of concrete.

4. It can significantly improve the transition interface structure between aggregates and slurries in concrete.

5. It is recommended to add nano silica material into the liquid water reducer before stirring with other materials.

Addition amount: It is recommended to add 2-5%. Users can conduct experiments based on their actual situation and choose the best addition value.

Nano silica packaging: 10 kg/bag