JT-PCA polycarboxylic acid high performance water reducer
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Water reducing agent for concrete
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Zhongsen PCA series products (pumping agent) can provide customers with optimized personalized products and technical solutions according to the actual needs of engineering。This series of products can greatly reduce the water-binder ratio, save the amount of cement, improve the strength and durability of concrete;Significantly improve the concrete slump retention ability, improve workability, reduce pumping viscosity, improve pumping construction efficiency and construction quality;It has strong adaptability to cement and mineral admixtures and low sensitivity。
This product refers to the implementation of GB/T8076-2008 "Concrete admixture", GB/T8077-2012 "Concrete admixture uniformity test method", JG/T223-2007 "polycarboxylic acid series high performance water reducing agent" standards。
1. Technical indicators
1.High water reduction rate: the water reduction rate of the product is 20-30%, which can meet the requirements of different grades of concrete water reduction rate。
2.Excellent adaptability: good compatibility with different kinds of cement and admixtures, good temperature adaptation;
3.Low slump loss: in line with the pumping agent standard, slump loss is significantly reduced;
4.High durability: effectively reduce concrete water-binder ratio, improve durability, reduce shrinkage and creep;
5.Indicators: Solid content 10±2%, water reduction rate ≥20%, density 1.06±0.02kg/m³
Second, homogeneity index
According to product performance indicators and user requirements, in line with national, industry and enterprise standards。
3. Scope of application
This product is suitable for domestic and foreign nuclear power, hydropower, Bridges, high-speed rail, high-rise buildings, municipal civil and other fields as well as suitable for key projects and special requirements of concrete。
4. Use examples
Test results of C30 concrete in a commercial mixing station of Zhonglian
|
Test number |
Cement kg/m³ |
Mineral powder kg/m³ |
Fly ash kg/m³ |
Machine sand kg/m³ |
1-2 stone kg/m³ |
1-3 stone kg/m³ |
Water kg/m³ |
Admixture /% |
Initial performance /mm |
2h Performance /mm |
|
Admixtures are being used |
220 |
80 |
80 |
875 |
850 |
120 |
165 |
2.0 |
220/550 |
150/380 |
|
Zhongsen admixture |
220 |
80 |
80 |
875 |
850 |
120 |
165 |
2.0 |
230/560 |
215/530 |
5. Methods of use
1.Dosage range of this product 1.8-2.2% (in terms of the amount of gelling material), can be adjusted within the recommended range to determine the best dosage according to the requirements of adaptability to cement, changes in air temperature and concrete slump。
2.When calculating the water consumption of concrete, the amount of water in the liquid agent should be deducted。
3.When using this product, the adaptability of it with cement should be tested in advance according to the concrete trial mix。
6. Packaging and storage
1.Can be transported by tank truck;Plastic drum 1000kg/ drum;Special packaging can also be made according to user requirements。
2.The warranty period of this product is one year, if there is precipitation during the warranty period, it will not affect the effect after mixing。
7. Precautions
1.When the cement variety is updated or new cement is added, it should be tested for compatibility with cement。
2.For concrete requiring slow setting, the setting time should be checked in advance according to the concrete trial mix。
3.The dosage must be correct according to the test mix ratio, and when pouring concrete, it should be strictly operated according to the construction specifications。
4.During winter construction, in order to improve the early strength of concrete, the amount of concrete cement should be properly adjusted。
5.As with conventional concrete works, maintenance must be strengthened according to construction specifications。
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Multison Holdings Group
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