Wuhan Anji Taineng Environmental Sci-Tech Co., Ltd
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Slump-conserving Polycarboxylate Superplasticizer water-reducing agent
Polycarboxylate Superplasticizer:
With the overall development needs of "One Belt, One Road", "the 14th Five-Year Plan" and other construction projects, the construction of high-speed railway, cross-sea bridge and other projects put forward high requirements for the working performance of ready-mixed concrete, especially the ready-mixed concrete mixed with polycarboxylic acid water-reducing agent. However, at present, the market concrete is affected by the scarcity and poor quality of ground material, and the mixed material is prone to the phenomenon of reduced fluidity and greater slump loss. Therefore, the focus of improving concrete performance has gradually shifted to the research on slow release technology of concrete. The existing research shows that it is an important step to develop the slump - proof PC slow - release technology.
Small dosage of general water reducing agent is helpful to improve the dispersion of cement particles and release the water contained in cement clusters. The development of slump - proof PCE is also based on this. The currently studied chemically-sustained-release slump-conserving PCE can be divided into three types according to their action forms: carboxyl-protected, cross-linked and amphoteric. The synthesis technology of carboxyl-protected polycarboxylic acid superplasticizer is intuitive, beneficial to production and has good slump retention effect. However, there are still some problems in the current stage of slump protection polycarboxylic acid water-reducing agent, such as the urgent need to improve the slump protection effect, large fluctuation and high reaction temperature, which is not conducive to the actual production. Considering the current market demand, the release rate of carboxylic acid protected polycarboxylic acid water reducer mainly depends on the chemical bond, especially the number and stability of groups introduced into the side chain. Therefore, the release rate can be adjusted by changing the number and type of functional groups introduced into the side chain of water reducer molecules. Considering the main process of normal temperature, the focus is to choose the appropriate initiation system to reduce the reaction temperature of free radical copolymerization.
Polycarboxylic acid superplasticizers have become one of the most important superplasticizers in the concrete admixture market because of their high water reduction rate, good effect, good adaptability to cement and slump resistance. With the construction of large-scale infrastructure such as nuclear power, water conservancy, Bridges and tunnels, especially the planning and implementation of railway passenger dedicated line network projects, the market demand for PCE polycarboxylate superplasticizers will show a trend of continuous growth.
Polycarboxylic acid superplasticizer is a new type of green concrete admixture, which is very suitable for high strength concrete, high performance concrete, large volume concrete and high quality flow plastic concrete. PCE superplasticizer has the characteristics of reducing water, retaining slump, reinforcing, resisting shrinkage and environmental protection. In addition, it can also be combined with various admixtures to form multi-functional concrete admixtures, such as pumping agents, early strength agents, impermeable waterproofing agents, retarding agents, etc.
White polycarboxylic acid powder is a new generation of environmentally friendly and highly efficient water reducing agent for mortar developed on the basis of new synthesis technology. The main component is polycarboxylate, which is a kind of fluid powder made by special drying process. And its comprehensive index is excellent, green and pollution-free, is a high-performance environmental protection product.
| NO | Index items | Test Results |
| 1 | Appearance | white powder |
| 2 | stacking density/g·cm-³ | 0.72 |
| 3 | content of cl- (%) | 0.023 |
| 4 | PH value | 6.5 |
| 5 | water contene(%) | 0.85 |
| 6 | alkcli content (%) | 2.17 |
| 7 | Na2SO4 content(%) | 1.25 |
Product characteristics:
1. High water reduction rate: it has excellent water reduction rate and plastic retention, and still has excellent water reduction performance under low content. The effect is particularly significant in cement-based mortar, gypsum based mortar and high grade concrete, and the highest water reduction rate can reach 40%; High water reduction rate: in low content has a very high water reduction efficiency, giving the material system excellent liquidity, effectively improve the system of compactness and strength, the highest water reduction rate can reach 40%.
2. High dispersion: With excellent dispersion ability, it can quickly adsorb, reduce mixing time, give the material system excellent workability and constructability, improve construction efficiency and meet different construction requirements.
3. High adaptability: with a variety of cement-based systems have excellent adaptability, and good compatibility with other functional admixtures, under a variety of conditions do not reduce the application performance.
4. Early strength and high strength: it has excellent early strength and enhancement effect. The enhancement effect is remarkable under the same conditions, and the dosage can also be reduced under the same demand.
5. High durability: enhance the compactness of hardened slurry, improve shrinkage and creep performance, reduce cracks, enhance permeability, erosion and chloride penetration resistance, improve durability.
6. Green environmental protection: does not contain harmful substances, safe environmental protection, belongs to environmental friendly materials.
Use method and precautions
1. When used, it should be mixed evenly with other dry powder components first, and mixing construction should be carried out according to the requirements of mixing construction in different fields;
2. The recommended dosage is 0.05-0.50% of the cementing material, and the specific dosage is determined according to the application system and the change of dry mix components.
3, in the low content of the system has good dispersion and liquidity; When the dosage is greater than 0.10% to 0.25%, the fluidity has a very obvious increase, pay attention to the accuracy of controlling the dosage.
FAQ:
Q1. Which payment is available for your company?
Re: T/T, L/C, D/A, D/P, Western Union, MoneyGram
Q2. How can I get the sample?
Re: We provide you free sample. But you should pay for the postage. When we have a formal transaction, we will refund the postage of this sample.
Q3. How can you guarantee the goods you offer is qualified?
Re: We can provide sample, COA, MSDS and etc to help you insure the quality. And we promise every batch of product will be tested in the factory, and they can only leave the factory after the quality is qualified.
Q4. How can I get your best price?
Re: We will provide you timely market information and the fluctuation trends of raw material to help you determine the most appropriate time for an ord
