Silica fume is a volcanic ash high performance mineral admixture, which can fill the pores between cement particles, and at the same time generate gel with hydration products, and react with alkaline material magnesium oxide to generate gel. In cement-based concrete, 砂浆, 具体的, exterior wall insulation, grout and refractory casting materials, mixed with the right amount of silica fume, what exactly are the benefits? Silica fume supplier – Henan Superior Abrasives to introduce to you.
1. Improve pumping performance
Silica fume makes high-strength concrete ( C70 or above), which significantly improves the strength and pumping performance of concrete.
2. Production of high permeability type concrete
Manufacture of high impermeability (≥P30 ), 结构自防水混凝土, 用于地铁, 隧道, high-rise buildings in the basement.
3. Enhance the wear resistance of concrete
微硅粉粒度分布合理, 稠密, 硬度, 耐磨性好, 可显着提高拉伸固化, 压缩的, 冲击强度和耐磨性, 抗冲击性可以通过以下方式增加 0.5-2.5 次.
4. Change the adhesive property
硅粉可以增加导热系数, change the adhesion and increase the flame retardant properties.
5. Prevent cracking
可降低环氧树脂固化反应的放热峰值温度, 降低固化物的线膨胀系数和固化物的收缩率, thus eliminating the internal stress and preventing cracking.
6. Reduce and eliminate precipitation
Due to the fine particle size and reasonable distribution of micro-silica powder, it can effectively reduce and eliminate the precipitation and delamination phenomenon.
7. Good insulation performance
微硅粉 is pure, 低杂质含量, 物理、化学性质稳定, so that the cured material has good insulation properties and anti-arc performance.
8. Extend the life
Manufacture of marine and chemical concrete, 由于其高密度特性, 有效阻止硫酸根、氯离子对混凝土的渗透, 侵蚀, 以避免混凝土钢筋腐蚀, 从而延长混凝土的使用寿命.
9. Improve anti-cavitation ability
硅粉的化学成分是二氧化硅 (二氧化硅), which is an inert material and does not react chemically with most acids and alkalis. The silica fume is evenly distributed and covered on the surface of the object, which has a strong anti-corrosion ability and increases the anti-cavitation ability by 3-16 次.
10. 降低成本
Micro-silica powder has small stacking density: 一之间 0.2-0.8 and one between 1.0-2.2. As a polymer filler material, it is less than other mineral fillers, and the loading weight is small, 节省聚合物用量, 所以可以降低产品的成本.
11. Micro-silica powder frost resistance
后 300-500 快速冷冻和解冻循环, the relative modulus of elasticity of microsilica powder is 10-20% lower than that of ordinary concrete, 这是 30-73% lower than that of ordinary concrete through 25-50 周期. 所以, 可以提高混凝土的抗冻性.
12. 硅粉早强
Micro-silica powder concrete makes the induction period shorten and has the characteristics of early strength. 这些特性都非常好.
13. Extremely strong activity of silica fume
With water-reducing properties, it is suitable for early-strength and high-strength concrete admixture needed for rapid construction. Admixture for high-strength shotcrete used for support during the construction of tunnels, subways and large pit structures. Admixture for concrete used in underwater construction projects (例如: 桥墩, 水坝, 钻井平台, ETC。).
现在, I believe you have understood why you need to add silica fume in concrete, silica fume in water conservancy, 公路, 桥梁项目, concrete not only need the above basic indicators, but also on its wear resistance, scouring resistance has very demanding requirements, mixed with micro-silica powder is very necessary. Showing the superior physical properties of silica fume concrete at the same time, but also economic, cost-effective and other advantages, attracting the attention of a large number of concrete manufacturing enterprises.
河南优之源进口 & 出口贸易公司, 有限公司 has more than 20 years experience in silica fume production, if you have any questions and demands about micro silica powder, welcome to contact us through sales@superior-abrasives.com 电子邮件, 我们会尽快回复您.
