85% Fumaça de sílica densificada
85% Fumaça de sílica densificada
- SiO₂: >85%
- Cor: Grey
- PH Value: 6~8
- Bulk density: 550~700kg/m3
- Packages:1000kg plastic woven bags, 10kg soluble paper bags, 20kg soluble paper bags, 25kg plastic woven bags, 500kg plastic woven bags, 600kg plastic woven bags, 950kg plastic woven bags.
Introduction
85% Densified Silica Fume is a micro-silica fume with 85% Conteúdo SiO2, and the Bulk density is 550-700kg/m³.
Fumaça de sílica, also known as silica powder or Micro silica, is a kind of micro powder product which is recovered by dust collector after a large amount of smoke and dust produced by ore heating furnace in the production of ferro silicon or silicon metal. Its characteristics are: extremely fine particles, large specific surface area and good activity.
The main component of silica fume is SiO2, with a small amount of impurities such as C, Fe2O3, K2O, CaO, Na2O, etc.. Due to its inherent characteristics, the average particle size is 0.23 um, the specific surface area is 20 m2/g, and the sieve residue of 45 um is less than 3%. By adding silica fume into concrete, the compacting, impermeabilidade, corrosion resistance, frost resistance and other properties of concrete can be greatly improved. In concrete, the amount added is 5-10% of the cement content.
Advantages
Parâmetros
| PROPERTIES | ||
| State | Amorphous -Sub-micron powder | |
| Cor | Gray to medium gray powder | |
| Specific Gravity | 2.10 para 2.40 | |
| Solubility | Insoluble | |
| Bulk Density -Densified | 42 para 48 lb/'(674 para 770 kg/m³) | |
| Bulk Density -Undensified “as produced” | 12 para 20 lb/(192 para 320 kg/m³） | |
| SPECIFICATIONS | ||
| Chemical Requirements | ASTM | Typical |
| Dióxido de Silício (SiO₂)% | 85.0 % Mínimo | 90.42% |
| Conteúdo de umidade % | 3.0% Máximo | 0.26% |
| Perda na ignição (LOI) % | 6.0% Máximo | 2.81% |
| Physical Requirements | ASTM | Typical |
| Oversize percent retained on 45-um (325 sieve) | 10.0 % Máximo | 1.43% |
| Accelerated Porzolaric Strength Activity Index with Portland cement(7 day) | 105.0% Mínimo | 118% |
| Specific Surface | 15 ㎡/g Minimum | 21.10 m2 /g |
Aplicações
- Conservação da água e engenharia hidrelétrica: nas peças anti-infiltração e anti-abrasão, depois de misturar com pó de micro-sílica, it can greatly improve the anti-seepage, anti-cracking, anti-abrasion and anti-cavitation performance.
- The production of high-strength concrete: silica powder as admixture to make high-strength concrete, the actual application of its strength level can be achieved 100Mpa.
- Seaport engineering: concrete mixed with silica powder can improve the concrete’s anti-abrasion performance, anti-seepage performance, to prevent electrochemical corrosion of reinforcing steel.
- Traffic engineering: concreto em pó de sílica usado em pavimentos de rodovias e pistas de aeronaves, pode melhorar muito a resistência inicial e a resistência ao desgaste do concreto, na manutenção e reparação de pavimentos rodoviários, você pode adiantar o horário de abertura e aumentar os benefícios econômicos.
- Concreto projetado: melhorar significativamente o desempenho de adesão e coesão do concreto plástico, reduzir significativamente a quantidade de recuperação, aumentar a espessura do concreto projetado uma vez formado, encurtar o período de construção e economizar o custo do projeto.
Embalagem
- 10kg soluble paper bags x 84 on the pallets.
- 20kg soluble paper bags x 42 on the pallets.
- 950kg plastic woven bags x 2 on the pallets(with or without bottom spout)
- 1000kg plastic woven bags x 2 on the pallets(with or without bottom spout )
- 500kg plastic woven bags x 2 on the pallets (with or without bottom spout )
The machine is automatically packed and filtered by a screen, so that no debris is mixed in.
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