What is Polycarboxylate Superplasticizer PCE Powder?
Polycarboxylate superplasticizer PCE powder is a kind of powdery polycarboxylate high-performance concrete superplasticizer made by a new process. It has an excellent comprehensive index, good dispersibility, a high water reduction rate, good adaptability to various cements, and no pollution in green.
Since polycarboxylate superplasticizer is mostly in the liquid state, due to the improvement of technology, the milling process has been improved, and polycarboxylate superplasticizer powder has become more common. In contrast, polycarboxylate superplasticizer PCE powder state provides a lot of convenience from transportation to customer use, and powder polycarboxylate superplasticizers have become the development trend of such products.
Concrete Superplasticizer PCE Powder
Concrete admixture superplasticizer breaks the routine in the production process, adopts thermal synthesis process, does not add an isolation agent, and produces products with higher purity. In terms of product performance, high-purity polycarboxylate superplasticizer powder has the characteristics of less dosage, highly effective components, and good slump retention performance, which further reduces customer costs.
Physical and chemical indicators of polycarboxylate superplasticizer PCE powder
Feature of polycarboxylate superplasticizer powder
Superplasticizer dosage in concrete: Polycarboxylate ether superplasticizer powder of this product is 0.16-0.3% of the total amount of cementitious material, and the water reduction rate is >25%.
Superplasticizer admixture for concrete does not contain harmful components and has no pollution to the environment.
No chlorine, low alkali.
Applications of concrete Superplasticizer Additive Powder
Precast concrete
Cast-in-place concrete
Reinforced concrete
Prestressed concrete
Gravity leveling pad
Non shrinkage grouting
Cement rapid setting floor
Repair mortar
Dry mixed concrete
Usage method of polycarboxylate superplasticizer powder
1. Superplasticizer used in concrete: According to the concrete design requirements, adjust the water consumption or sand rate through experiments to reach the dosage of the water reducer whose slump, strength, and setting meet the requirements.
2. PCE powder is applicable to high-performance concrete, high-strength concrete, and large-flow concrete.
For concrete higher than C50, raw materials shall be selected according to relevant technical specifications, an appropriate mixing process shall be determined, and a certain amount of experimental data shall be obtained.
Make the flow performance of the produced concrete meet the construction requirements, and the concrete strength should have a certain surplus coefficient.
3. PCE superplasticizer can be mixed with mixing water into concrete at the same time, and the effect of mixing water into concrete is better.
Safety and Precautions of Polycarboxylate Superplasticizer Powder
1. Polycarboxylate superplasticizer powder is a weakly alkaline solid, non-toxic, corrosive, and nonpolluting to the environment. However, it is not edible. When it comes into contact with the human body and eyes, it should be washed with clean water as soon as possible. If it causes allergy to some human bodies, it should be treated in time.
2. Polycarboxylate superplasticizer powder should be stored in a cardboard bucket lined with plastic bags to avoid the mixing of rainwater and sundries.
3. The shelf life of polycarboxylate superplasticizer powder is 12 months.
Packaging and storage of polycarboxylate superplasticizer Powder
Paper plastic composite packaging lined with plastic bags
Packaging: 25kg/bag
FAQs of polycarboxylate superplasticizer Powder
Q: What should I pay attention to when using PCE Powder to ensure the best results?
Answer: In order to fully utilize the advantages of PCE Powder and ensure the quality of concrete, the following points need to be noted during use: Accurate dosing: Add in strict accordance with the designed proportion, too much or too little will affect the final performance. Usually the recommended dosage is 0.2%-0.5% of the total cementitious material. Uniform mixing: Ensure that PCE Powder is well mixed with other ingredients to avoid uneven distribution caused by too high or too low local concentration. Adaptability test: Different brands and batches of cement may respond differently to PCE, it is recommended to carry out small-scale trial mixing experiments first to confirm compatibility and effectiveness. Environmental conditions: Temperature changes will affect the performance of PCE, especially at low temperatures, the blending amount should be adjusted appropriately or thermal insulation measures should be taken. Optimization of mixing ratio: Combine with the specific project requirements to adjust the proportion of sand and gravel, mineral admixture and other parameters, in order to achieve the best comprehensive performance.
Q: What are the advantages of PCE Powder compared with other types of water reducing agents?
A: Compared with traditional naphthalene and sulfamate water reducing agents, PCE Powder has the following significant advantages: Higher water reduction: It can provide higher water reduction, usually up to 30%-40%, compared with 25% for traditional water reducers. Good slump retention: maintains good flowability even after long transportation or waiting, reducing the risk of secondary water addition on site. Environmentally friendly: the production process is relatively clean and does not contain harmful substances such as formaldehyde, which is in line with the requirements of modern green building. Wide adaptability: It is suitable for many types and grades of cement, as well as concrete construction under various complex working conditions.
Multifunctionality: In addition to the basic water reduction function, other functional groups such as air-entraining, early-strengthening, retardation, etc. can be introduced as needed to meet the needs of special applications.
Q: How does PCE Powder affect the early strength development of concrete?
A:
PCE Powder has a positive effect on the early strength development of concrete: Accelerates hardening: Although PCE itself is not a coagulant promoter, it can indirectly accelerate the hardening of concrete by improving the internal microstructure of concrete and promoting the growth of calcium hydroxide crystals in the cement paste. Reduce water seepage: It effectively inhibits the precipitation of free water in concrete, reduces the phenomenon of floating slurry on the surface and water accumulation at the bottom, ensures the overall compactness of concrete, and facilitates the growth of early strength. Optimization of pore structure: Reduces the number of large pores within the concrete, forming a denser and more uniform pore distribution, which enhances the early strength. Stabilized workability: Good flow retention allows the concrete to remain consistent throughout the pouring process, avoiding loss of strength due to time delays. It should be noted that although PCE contributes to the development of early strength, its final strength still depends on the quality of the cement itself and other proportioning factors.
Q: How do I select the right type and supplier of PCE Powder for a particular project?
A:
Selecting the type of PCE Powder and a reliable supplier that best suits the project's needs is a critical step in ensuring quality and cost-effective concrete:
Define requirements: First determine the type of concrete needed for the project, performance requirements (e.g., strength class, fluidity, durability, etc.), and construction conditions (e.g., climate, transportation distance, etc.). Comparison of technical parameters: Compare the technical indicators of different types of PCE, such as water reduction, slump retention, adaptability, etc., and select the product that best meets the project requirements. Sample test: Request samples from potential suppliers and conduct preliminary tests in the laboratory or at the construction site to assess whether their actual performance meets expectations. Supplier reputation: Examine the supplier's historical performance, customer evaluations and level of technical support, and prioritize those companies with rich experience and good reputation. Price and supply stability: Consider the market price of the product, the bulk discount policy and the reliability of long-term supply to find the most cost-effective partner. Environmental certification: Ensure that the selected products comply with local environmental standards and have the appropriate certification documents to cope with the increasingly stringent environmental protection regulations.
