YL-09 NP is naphthalene-based non-chloride set-accelerating water-reducing admixture, it significantly accelerates setting time, and reduces the quantity of mixing water necessary to produce concrete of a given consistency, while providing greater economy for a given stregth.
It increases strengths and significantly improves permeability, workability and finishing characteristics. It complies with GB 8076-2008, GB50119-2003 and ASTM C494, Type E.
- This product is designed for the constructions requiring earlier strength for normal concrete, steel-reinforced concrete, and pre-stress concrete under normal temperature and low temperature (-5 to 30 degree C)
- Widely used in pre-cast & deposit concrete, armored concrete, pre-stressed reinforced concrete and fly-ash-cement concrete. Compatible with Portland cement, normal Portland cement, Portland slag cement, fly-ash cement and Portland poaaolanic cement etc.
- Suitable for self-cured concrete and its formulations. It has remarkable effects of water reduction and enhancement, especially at the early stage. The modulus and site utilization can be improved.
- Accelerating setting time across a wide range of temperatures. Increasing early and utimate compressive and flexural strengths.
- Water reducing 10-15% with low dosage of 1.5-2.5%
- After application, all physical properties of concrete can be improved to a certain extent.
- 10%-15% of cement will be reserved when it is applied as a condition of blending in which collapsibility and strength are fixed forehand.
Item | Norm | Item | Norm |
Appearance | Gray powder | PH value | 7-9 |
Fineness (0.315mm remains) % | ≤12% | Chlorine content | Non |
Moisture | ≤10% | Fluidity of cement | 160mm |
Item | Actual results | Criteria |
Water-reducing rate (%) | ≥12 | ≥8 |
Bleeding rate ratio (%) | ≤90 | ≤95 |
Air content (%) | ≤2.5 | ≤4.0 |
Setting time difference (min) | Initial setting | -30~+30 | -90~+90 |
Final setting | -30~+30 | -90~+90 |
Compressive strength ratio (%)≥ | 1 day | 145 | 135 |
3 days | 140 | 130 |
7 days | 120 | 110 |
28 days | 110 | 100 |
Shrinkage ratio (%) | 28 days | ≤120 | ≤135 |
Corrosion reinforcing steel bar | Non | |
For powder: Woven plastic bag with film liner. Net weight: 25kg +/- 0.2 kg.
It should be stored in a dedicated warehouse that is well-ventilated and dry and keep away from moisture.
Shelf Life: Minimum 12 months. After the expiration date, it can be used if testing results is qualified.