FDN-AII Low Concentration Type
I、Features and Applications
1、Main ingredient is β-naphthyl sulfonate formaldehyde condensate, sodium sulfate≤10.0%.
2、Good dispersion, water reduction and early-strength effect. It can speed up the turnover of templates and fields, accelerate construction progress and shorten the completion period. It is applicable for concrete with early-strength and high-performance requirements and other concretes that need to enhance strength and improve long term performance.
3、Increase the concrete slump and improve its liquidity, applicable for ready-mixed concrete, pumping concrete, high-liquidity concrete, grouting material, etc.
4、Without air entraining. It is applicable for all grades of concrete with steam curing condition and natural maintenance.
5、No corrosion on steel bars. It is applicable for precast concrete, cast-in-place concrete, reinforced concrete, prestressed reinforced concrete, etc. in various projects.
6、Good compatibility with portland cement, regular portland cement, portland slag cement, portland flyash cement, etc.FDN-20 has good compatibility with portland cement, regular portland cement, portland slag cement, portland flyash cement, etc.II. Main Indexes of Performance and Quality.
II、Performance
1、Powder or liquid. The powder appears to be brownish yellow, and the liquid appears to be tan. Both are nontoxic, odorless and incombustible.
2、Homogeneity indexes.
Testing Item | FDN-AII powder |
moisture content (%) | ≤8 |
Fineness 0.315mm residue on sieve (%) | <15 |
PH Value | 7～9 |
Chloride(%) | ≤0.2 |
Sodium Sulfate(%) | ≤18 |
Total alkali quantity (%) | ≤18 |
Insoluble (%) | ≤0.5 |
Liquidity of Cement Paste(mm) | 195～240 |
3、Performance indexes of concrete mixed with FDN-20.
Testing Item | Standard | Testing Result | Testing Item | Standard | Testing Result | ||
Water Reduction(%) | ≥14 | ≥17 | Compressive Strength(%) | 1d | ≥140 | ≥160 | |
Ratio of Bleeding(%) | ≤90 | ≤80 | 3d | ≥130 | ≥150 | ||
Air Content (%) | ≤3.0 | ≤2.0 | 7d | ≥125 | ≥135 | ||
Temporal Distribution for Setting （min） | Initial Setting | -90～120 | -90～120 | 28d | ≥120 | ≥125 | |
Final Setting | Shrinkage(%) | 28d | ≤135 | ≤135 | |||
Corrosion on Steel Bar | No | No | |||||
III.、Application Method and Notice
1、Blend dosage range is 0.5－1.2%. Appropriate blend dosage can be selected according to project object and the materials used during application.
2、FDN-10 powder is recommended to be applied in solution. It can be used in dry form, but make sure mix it thoroughly with concrete.
3、If this product is applied with adoption of stagnant water blending method or post-blend approach, water reduction and dispersion will be better.
4、This product can be formulated with concrete additives of other varieties. It can be “double blended” with blending materials such as fly ash, ground slag, etc. But the blend dosage shall be calculated based on the total of cementing materials.
5、When this product is used for the first time or cement variety is changed, concrete trial preparation shall be conducted according to the adopted materials and construction requirements in the field. Construction mixing rate shall be adjusted based on testing result to serve as instruction for construction blending.
IV、Packing, Transportation and Storage
1、Powder pack: woven fabric bag with plastic liner. Net weight: 25kg or 50kg or FIBC. Liquid pack: airtight plastic or iron drums, or tank car in bulk.
2、Cautions should be taken to prevent from being torn by sharp-ended objects while packages are being transferred or delivered. When being contaminated by high humidity or moisture in case of leakage, it can be prepared in prescribed ways for further use without surrendering any effect.
3、It should be stored in a dedicated warehouse that is well-ventilated and dry. It remains effective in one year. After the expiration date, it can be used again if the testing results fall within the established range.
V. Technical Service
We have concrete laboratory equipments and professional technicans to supply consulting service for our customers.
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