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YL-08NP High Range Water Reducing and Set Retarding Concrete Admixture
ASTM C494, Type G
YL-08NP is a water reducing, highly effective superplasticizer with a set retarding effect for concrete in hot temperature which delays concrete setting time. It has also high range water reducing for promoting high early and ultimate strengths of concrete.
YL-08NP is naphthalene-based superplasticizer compounded by some of high-performance retarder, stabilizer and reinforcing admixtures etc.
It complies with ASTM C 494 Type G, GB8076-2008 and GB50119-2003.
Ø YL-08NP is ideal concrete admixtures for preparing high-performance and high-strength concrete, mass concrete and long-distance transport concrete etc.
Ø It is suitable for working condition under temperature 5-40 ℃.
Ø Not suitable for being solely applied in the steam curing concrete.
Ø Test before applied in anhydrite, dross or similar industrial waste cement.
Advantage
0.5-1.2% by weight of cement. Exact dosage rates are dependent on the type of effect sought, quality of cement and aggregates, water/cement ratio and ambient temperature. Therefore, in many cases it is advisable to carry out trial mixes.Using during mixing and after-mixing method and properly prolong stirring time to assure even.
Item | Norm | Item | Norm |
Appearance | Lark powder | Fluidity of cement | 230mm |
Fineness (0.315mm remains) % | ≤12% | Chlorine content | Non |
PH value | 7-9 | Moisture % | 8.0 max |
Items | Criteria | Test Results (C×1%) | ||
Water Reducing Rate (%) | ≥14 | 24.4 | ||
Ratio of Bleeding Rate (%) | ≤100 | 32.8 | ||
Air Content (%) | <4.5 | 2.4 | ||
Setting Time Difference (min) | Initial | >+90 | +200 | |
Compressive Strength Ratio (%) | 3 days | -- | -- | |
7 days | ≥125 | 135 | ||
28 days | ≥120 | 132 | ||
Shrinkage (%) | 28 days | ≤135 | 109 | |
Alkali Content (%) | ----- | 2.35 | ||
Alkali Content per m3 (kg) | ≤1.0 | 0.1 | ||
Chloride Ion Content | ----- | 0.09 | ||
Chloride Ion Content per m3(kg) | Prestress Concrete | <0.02 | 0.004 | |
Reinforced Concrete | 0.02~0.20 | |||
Plain Concrete | 0.20~0.60 | |||
Ammonia Content (%) | ≤0.1 | 0 | ||
Radiation | Internal Exposure Index, IRa | ≤1.0 | 0.13 | |
External Exposure , Index, IY | ≤1.0 | 0.45 | ||
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.
