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SUMMARY
- High Water reducing Rate: Water-reducing rate of the mortar can reach above 20%, and the fluidity of the mortar can be greatly improved when adding the same amount of water.
- High Early-Strength: it is able to improve the early strength and the limit strength of the mortar.
- High Durability: it is able to reduce the water-binder ratio, and enhance the durability performance, decrease the shrinkage and creep deformation and reduce shrinkage crack at the last stage of the mortar hardens.
- ST209S-T-AD is not easy to damp and cake and has long expiration period.
TECHNICAL SPECIFICATION
The application performance of ST209S-T-AD in the concrete is shown in the following table, the test method is
| Appearance |
Bulk density (g/l, 20℃) |
pH Value (20℃ aqueous solution) |
Moisture content(%) |
|
White powder |
600±50 |
9.0±1.0 |
≤3 |
adopted with reference to the Chinese national standard, the standard concrete PO 42.5 is taken in the following tests, the mixing additive is 0.2% of the amount of cement.
PRINCIPAL PERFORMANCE
| Test Items |
Specification |
||
|
Ratio of Compressive Strength(%) |
1d |
≥170 |
|
|
3d |
≥160 |
||
|
7d |
≥150 |
||
|
28d |
≥140 |
||
|
Air Content(%) |
≤6.0 |
||
|
Ratio of bleeding rate(%) |
≤60 |
||
|
Ritio of Shrinkage(28d) (%) |
≤110 |
||
|
difference in setting time(min) |
Initial setting time |
-90～+120 |
|
|
Final setting time |
|||
|
Number of cycles of resistance to freezing and thawing(time) |
≥200 |
||
|
Slump retention(60min)(min) |
≤80 |
||
APPLICATION
ST209S-T-AD has a good adaptability with cement and other admixtures and has been widely used in non-shrinkage grouting material/mechanical grouting material, repair mortar, cement-based mortar, waterproof mortar, crack-sealer and thermal mortar, and other cement-based dry powder material. It has been proved to be very helpful in improving the fluidity, early and final strength and the decreasing the shrinkage crack at the last stage of the mortar hardens. Besides, the product is applicable to the gypsum-based dry powder material, fire-proof material and ceramics.
Dosage: ST209S-T-AD generally 0.2-0.3% of the cementing material.
PACKING
ST209S-T-AD is packed with 25 kg bag, also can be packed according to user requirements.
