PRODUCT CENTER
HPC-JA polycarboxylic acid superplasticizer (early strength type) is composed of polycarboxylic acid superplasticizer with early strength component, slump retention component and other functional components, which can improve the early and late strength of concrete, increase the concrete compactness and durability, and the performance indicators of the product are better than the relevant indicators specified in the national code.
This product is a composite early strength water reducer, which can accelerate the development of early strength of concrete, and can greatly improve the early strength and late strength of hardened concrete.
Under the condition that slump and strength are basically the same, the amount of cement can be saved by more than 10%.
This product can reduce the production and delivery time of concrete components, reduce the steaming time or no steaming. This product can reduce the carbonization rate of concrete, no chlorine and low alkali, alkali - aggregate reaction resistance, no corrosion of steel bars, improve the durability of concrete.
After the addition of this product, the apparent color of concrete members is uniform and bright, and the shrinkage and creep properties can be improved
| Item | Ex-factory technical index |
| Appearance | Liquid |
| Solid content (%) | Control value ±1 |
| Density (g/ml, 20℃) | Control value ±0.02 |
| pH value | 6±1 |
| Alkali content (by cement content, %) | ≤3 |
| Chloride ion content (by cement content, %) | ≤0.3 |
| Sodium sulfate content (by cement content, %) | ≤3 |
| Formaldehyde content (by cement content, %) | ≤0.03 |
| Cement slurry fluidity (mm) | ≥240 |
Note: According to standard GB8077 "Test method for uniformity of Concrete admixtures"
CONCRETE PHYSICS
| Pilot project | Standard requirement | Ex-factory technical index | |
| Water reduction rate (%) | ≥25 | ≥25 | |
| Pressure bleeding ratio (%) | ≤50 | ≤40 | |
| Gas content (%) | ≤3.0 | ≤3.0 | |
| Setting time difference (min) | Initial set | -90-+90 | -90-+120 |
| Final set | |||
| Compressive strength ratio (%) | 1d | ≥180 | ≥190 |
| 3d | ≥170 | ≥180 | |
| 7d | ≥145 | ≥160 | |
| 28d | ≥130 | ≥140 | |
| 28 days | ≤110 | ≤105 | |
| Corrosion of steel bars | There is no | There is no | |
Note: According to the standard GB 8076 "Concrete admixture", JG/T223 "Polycarboxylic acid series high performance water reducing agent"
Suitable for all kinds of industrial and civil construction, water conservancy, port, transportation, municipal and other projects in the pre-mix cast-in-place concrete, plain concrete, precast concrete, prestressed reinforced concrete.
It is especially suitable for seasonal construction when the ambient temperature is 5℃ to -5℃, as well as high-strength high-performance concrete, superfluid self-compacting concrete and pumped concrete with high early strength requirements.
Can be used in different strength grades of concrete.
It is suitable for reinforced concrete prepared with silicate and ordinary Portland cement.
Typical applications: railway bridge plant (field), C60, C80 prefabricated pipe pile, pipe segment factory, various prefabricated parts factory.
This product is a composite product, used alone, solid content according to the concrete raw materials and construction technical requirements, according to the relevant standards of construction.
The recommended dosage of this product is 1.0%-3.0%, and the actual dosage needs to be determined by test.
Due to the differences in adaptability between different types of cement and admixtures, the adaptability test of cement and admixtures should be done before application or after changing cement varieties, models and cement batches.
When used, it can be added to the mixing water, or added to the concrete mixer at the same time with the mixing water. In order to achieve good water reduction effect, it is recommended that the mixing time is at least 120s, and the concrete mixing test should be carried out before use to ensure the quality of concrete.
This product is packed in 200kg round drum or 1000kg square drum, and the packaging specifications can also be determined according to user requirements.
After dilution, the product will affect the effective content of the product, and it is easy to become mildew and odor after high temperature or exposure to the sun. Therefore, during storage and transportation, attention should be paid to preventing rain, moisture, avoiding direct sunlight, and sealing at room temperature.
In the case of good storage conditions, the shelf life of 6 months; When it has been used for more than 6 months or has become moldy and smelly, relevant tests should be carried out to determine whether it can continue to be used; Please use it within one week after opening.
This product is not flammable, but the storage and transportation should be away from the open flame, strictly prohibited storage in iron drums.
This product may have a small amount of crystallization when the ambient temperature is low due to different concentrations, and may freeze when it is below 0℃, so it is suitable for indoor storage, and can continue to use after crystallization or freezing melting.
This product is non-toxic, non-corrosive, non-flammable, avoid ingestion and contact with eyes when using. In case of contact with eyes or inlet, rinse immediately with water. Compatibility test should be carried out when mixing with other admixtures.
