Sulfonated Melamine Formaldehyde SMF10
Melamine superplasticizer (sulfonated melamine formaldehyde MF-10) is an admixture widely used in concrete engineering. The following is an introduction from the aspects of its basic information, performance characteristics, mechanism of action, and application:
Basic information
Main ingredients: A high molecular polymer made by polycondensation reaction with melamine and formaldehyde as the main raw materials. The full name is melamine formaldehyde resin sulfonate high-efficiency water reducer.
Appearance and form: Usually a white powdery solid, easily soluble in water, and can be quickly dispersed in water to form a uniform solution.
Performance characteristics
High water reduction rate: The water reduction rate of melamine high-efficiency water reducer is generally around 15% - 25%, which can effectively reduce the water-cement ratio of concrete and improve the strength and durability of concrete.
Outstanding early strength performance: It can significantly improve the early strength of concrete. Within 1-3 days after concrete pouring, the strength increases significantly, which can speed up the construction progress and shorten the template turnover time. It is particularly suitable for projects with high requirements for early strength.
Good reinforcement effect: It can not only improve the early strength of concrete, but also have a certain reinforcement effect on the later strength. It can make the 28-day strength of concrete 20% - 40% higher than that of concrete without water reducer.
Strong adaptability: It has good adaptability to different types of cement, and can play a good water reduction and reinforcement effect in ordinary Portland cement, slag Portland cement and other cements.
Has a certain air entrainment: It can introduce an appropriate amount of tiny bubbles to a certain extent to improve the workability and durability of concrete, but the air entrainment is relatively small, and generally does not have a significant adverse effect on the strength of concrete.
Mechanism of action
Adsorption and dispersion: The polar groups in the molecules of melamine high-efficiency water reducer are adsorbed on the surface of cement particles, so that the surface of cement particles has the same charge. Through the electrostatic repulsion, the cement particles are dispersed from each other, breaking the flocculation structure between cement particles, releasing the enclosed water, thereby achieving the purpose of water reduction and increasing the fluidity of concrete.
Lubricating effect: The non-polar groups in the water-reducing agent molecules form a lubricating film on the surface of cement particles, which reduces the friction between cement particles and further improves the fluidity and construction performance of concrete.
Delaying cement hydration: To a certain extent, it can delay the hydration reaction rate of cement, making the hydration process of cement particles more uniform, which is conducive to the development of concrete strength and the stability of performance.
Application areas
General construction projects: In the concrete structures of industrial and civil buildings, such as the foundations, columns, beams, and slabs of high-rise buildings, melamine high-efficiency water-reducing agents can be used to improve the performance of concrete and ensure the quality of the project.
Bridge engineering: In the concrete construction of bridge piers, beams and other parts, it can improve the early strength of concrete, so that the bridge structure can reach the design strength as soon as possible and meet the construction progress requirements. At the same time, it can also enhance the durability of concrete and extend the service life of the bridge.
Hydraulic engineering: In the concrete structures of dams, sluices, canals and other concrete structures in water conservancy and hydropower projects, it can improve the durability indicators of concrete such as impermeability and frost resistance, and enhance the long-term stability of concrete in hydraulic environments.
Prefabricated component production: In prefabricated concrete component factories, it is used to produce various prefabricated beams, slabs, columns, pipes and other components, which can improve the quality and production efficiency of components and ensure the dimensional accuracy and appearance quality of components.
- Brand
- XYDCHEM
- Model
- 2
- Country of origin
- China