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Product model:SJZ-30 special for concrete
The strength of traditional cement-based concrete is low, adding a certain amount of nano-silica instead of a part of ordinary concrete binder, thereby improving the performance of concrete. Through special nano treatment, the surface energy of nano silica is higher, and it is easy to form a combination bond with hydration products in cement stones to produce CSH gel，and nano silica has special network structure, on the base of original network structure of cement paste can establish a new network, thereby forming a three- dimensional network，which can greatly improve the physical and mechanical performance and durability of cement paste. Therefore, nano-silica can be applied to high-strength cement-based pavement material.
Technical indicators：
| Project |
Indicator |
Appearance |
white powder |
Model |
SJZ-30 |
Average particle size，nm |
30 |
SSA，m2/g |
200±10 |
Surface treatment |
Nano-treatment agent |
Nano silica purity % |
≥ 99.5 |
Apparent density（g/L） |
40-60 |
PH Value |
5-7 |
Burning weightlessness （%）950℃x2h |
≤6.0 |
Application:
1. The compressive and flexural strength of cement mortar can be improved by adding nano-silica into cement mortar.
2. can reduce the slump and expansion of concrete.
3. can increase the self-shrinkage strain of concrete; improve the anti-CL-permeability and anti-freeze durability of concrete.
4. can improve the transition interface structure between aggregate and paste in concrete.
5. It is recommended that nano-silica material be mixed in liquid water reducing agent firstly and then mixed with other materials.
Add amount: It is recommended to add 0.5-1%, users can test according to their actual situation and choose the best added value.
Packing:
10kg/bag
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