SNF-C

1. Highly effective water-reducing properties. When SNF-C powder is added to a concrete mix at a rate of 0.5%-1.2% of cement, it can reduce mixing water requirements by 22%-25%. For example, in C35 concrete, without a water reducer, the water requirement is 170 kg per cubic meter. Adding an appropriate amount of SNF-C reduces this to 127.5-132.6 kg, significantly reducing the water-cement ratio and effectively improving the strength and durability of the concrete.
2. Significantly improves strength. Thanks to its excellent water-reducing properties, SNF-C naphthalene based superplasticizer can significantly increase concrete strength. Under conditions of equivalent workability and cement content, concrete incorporating this powder can achieve a 40%-60% increase in strength after one day, a 35%-55% increase in strength after seven days, and a 20%-40% increase in strength after 28 days. The strength also steadily increases over time. For example, in a C45 concrete project, the use of SNF-C powder increased the 28-day compressive strength from the designed 45MPa to approximately 52MPa, meeting the project’s high concrete strength standards.
3. Excellent workability retention. Naphthalene superplasticizer SNF-C significantly improves concrete workability, increasing initial slump by 100-180mm and achieving over 70% slump retention within 1.5-2 hours. This property effectively addresses the problem of rapid slump loss during long-distance transportation of commercial concrete (20-40 kilometers) and during the layered pouring of large-volume concrete (pouring time exceeding 1.5 hours). It also improves concrete cohesion and water retention, with a water bleeding rate typically ≤2%, preventing segregation and ensuring a smooth surface and uniform internal structure after hardening, reducing quality defects.
4. Enhanced durability. By reducing the water-cement ratio, SNF-C powder significantly increases concrete density and significantly improves durability. Tests have shown that concrete incorporating this powder can improve its impermeability from P6 to P8-P10, increase freeze-thaw cycle resistance (D-20) from 150 to 300-400 times, reduce carbonation depth (28 days) by 30%-50%, and lower chloride ion permeability by 30%-45%. In projects located in harsh coastal and freezing environments, concrete structures using SNF-C powder can effectively resist steel corrosion and freeze-thaw damage, extending the service life of the structure.
5. Widely adaptable. This product is highly compatible with a variety of cement types, including ordinary Portland cement, slag Portland cement, and fly ash cement. Furthermore, it is highly compatible with other concrete admixtures, such as retarders, early strength agents, and air-entraining agents, allowing it to be formulated to meet diverse project requirements.

As a high-performance concrete admixture, SNF-C superplasticizer always plays a vital role in various construction projects. Proper use can effectively enhance concrete performance and meet diverse project requirements.

• Precisely control the dosage. The dosage range for this product is typically 0.5%-1.2% of the cement content and should be determined precisely based on the concrete’s specific requirements. A dosage that is too low will result in insignificant water-reduction and strengthening effects; a dosage that is too high may cause concrete bleeding and abnormal setting times. It is recommended to use a “multiple trial mix method” to determine the optimal dosage. For concretes of different strength grades, performance indicators at different dosages should be tested and the optimal value selected.
• Conduct cement compatibility testing. It is sensitive to cement properties. Cements with high C3A content (>8%) or high alkali content (>0.6%) may experience rapid slump loss or unstable setting times. Compatibility testing should be conducted after each batch of cement arrives on site to measure the initial slump, 1-hour slump loss, and initial/final setting times of the concrete incorporating SNF-C powder. If slump loss is abnormal, it can be improved by adding 0.1%-0.3% sodium gluconate (a retarding agent). If the setting time is too long, the water-reducing agent dosage can be appropriately reduced or a 0.5%-1.0% early strength agent (such as aluminum sulfate) can be used in combination.
• Control the quality of sand and gravel. SNF-C superplasticizer has strict requirements on the mud content and particle size gradation of sand and gravel. For every 1% increase in sand and gravel mud content, the water reduction rate decreases by 2%-3%. The sand mud content should be controlled at ≤3% and the stone mud content at ≤1%. Improper sand and gravel particle size gradation (such as a sand fineness modulus <2.3 or >3.0) will affect the cohesion of concrete. The dispersion effect of SNF-C powder can be optimized by adjusting the sand-to-gravel ratio (for example, increasing the amount of medium sand). Furthermore, the moisture content of the sand and gravel should be closely monitored (it is recommended to be measured every 2 hours) and the water dosage adjusted accordingly to ensure a stable water-cement ratio.