JT-HPSA Water Reducing Polycarboxylate Water Reducing Agent
Zhongsen brand HPSA water-reducing polycarboxylate superplasticizer is the latest leading product at home and abroad. It has the characteristics of high water-reducing rate, low dosage, good adaptability to cement, small slump loss and no pollution. At the same time, it has various functions such as improving various performance indicators of fresh concrete and improving workability. This product is a colorless and transparent liquid, non-toxic, non-corrosive, non-flammable, non-corrosive to steel bars, and harmless to human health.
This product refers to the implementation of GB/T8076-2008 "Concrete Admixture", GB/T8077-2012 "Concrete Admixture Homogeneity Test Method", JG/T223-2007 "Polycarboxylate High Performance Water Reducer" standards.
1. Technical indicators
1. Pumping performance: with significant pumpability. Compared with the benchmark concrete, under the premise of the same water-cement ratio, the slump is ≥220mm, and the net change of slump in 1h is ≤50mm.
2. Reinforcing effect: under the premise of the same slump and the same amount of cement as the benchmark concrete, the water reduction rate is >25%, the strength of concrete at each age is significantly improved, the 7d compressive strength ratio is >150%, and the 28d compressive strength ratio is >150%. Strength ratio ≥140%.
3. Working performance: It can improve the workability, water retention and bleeding of fresh concrete.
4. Smooth surface: Concrete mixed with this product has the characteristics of strong cohesion, low air content and low bleeding rate, which can effectively improve the smooth and beautiful surface of various types of fair-faced concrete such as viaducts, highways, and bridges.
5. Special function: When preparing high-strength concrete mud, its high-performance indexes such as elastic modulus, impermeability, shrinkage resistance, creep resistance and durability can all meet the index requirements.
6. Physical and chemical indicators: colorless or light brown transparent liquid, solid content 40± 1%, water reduction rate ≥ 25%, density 1.08± 0.02kg/m³.
2. Homogeneity index
According to product performance indicators and user requirements, it conforms to national, industry and enterprise standards.
3. Scope of application
This product is suitable for all kinds of pumped concrete, mass concrete, high-rise buildings, elevated, highways, bridges, hydraulic concrete and underground, underwater pouring concrete, etc. It is especially suitable for concrete of key projects and special requirements.
4. Use examples
Trial test results of C30 concrete in a commercial mixing station of Zoomlion
Test number |
Cement kg/m³ |
Mineral powder kg/m³ |
Fly ash kg/m³ |
Machine-made sandkg/m³ |
1-2 stone kg/m³ |
1-3 stone kg/m³ |
Water kg/m³ |
Additives/% |
Initial performance/mm |
2h performance/mm |
Admixtures in use |
230 |
90 |
80 |
860 |
850 |
135 |
165 |
2.2 |
220/540 |
160/400 |
Zhongsen Admixture |
230 |
90 |
80 |
860 |
850 |
135 |
165 |
2.2 |
230/550 |
220/530 |
Remarks: 1. The solid content of the two water-reducing agents is the same; 2. The proportion of Zhongsen water-reducing agent in the water-reducing agent is 70%.
5. How to use
1. The dosage range of this product is 0.5-0.8% (calculated by the amount of cementitious material), and the optimum dosage can be adjusted within the recommended range according to the requirements of adaptability to cement, temperature changes and concrete slump.
2. When calculating the water consumption of concrete, the water in the liquid agent should be deducted.
3. When using this product, the compatibility with the cement should be checked in advance according to the concrete trial mix.
4. This product is a high-content water-reducing agent product, which must be confirmed by tests before being compounded with other types of admixtures.
6. Packaging and storage
1. It can be transported by tanker; plastic barrels 1000kg/barrel; special packaging can also be made according to user requirements.
2. The warranty period of this product is one year. If there is any precipitation during the warranty period, it will be used after stirring, which will not affect the effect.
7. Precautions
1. When the cement variety is updated or the cement is newly introduced, the compatibility test with the cement should be carried out.
2. For concrete requiring retardation, the setting time should be checked in advance according to the concrete trial mix.
3. The correct amount must be added according to the test mix ratio. When pouring concrete, it should be operated in strict accordance with the construction specifications.
4. When compounding with other admixtures, its compatibility should be checked first.
5. During construction in winter, in order to improve the early strength of concrete, the amount of cement used in concrete should be adjusted appropriately.
6. Like conventional concrete projects, maintenance must be strengthened according to construction specifications.
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