7, increasing the concrete compressive, tensile, bending, shear strength, easy preparation of high-strength concrete.
8, water remains unchanged, it can be prepared plastic concrete, to avoid steel-intensive, vibrated to poor quality problems.
9, in the case of the same amount of water can make concrete flow pattern was shaped into the mold to reduce the concrete pump, piping and die wear and tear and prolong their useful life.
10, can be prepared masonry, plastering cement mortar, and low-grade cement. To meet the strength required in the circumstances, not only can save 30-70% of the cement, while increasing the construction operability.Microsilica
11, applicable to the production of environmentally compatible materials and high-performance cement-based concrete admixture.
increasing the concrete compressive
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including cement mortar
1, save 30-70% of cement consumption (including cement mortar), reduce the cost of concrete. The average overall costs per cubic meter of concrete reduces about 10-23 yuan.
2, can significantly reduce the secretion of concrete water, to improve the workability of concrete.
3, can significantly reduce the hydration heat of concrete to improve concrete workability, reduce segregation and bleeding, reduce mass concrete temperature changes and stress, to resist cracks due to temperature and is especially suitable for the preparation of mass concrete.
4, we can use the form of cementing materials in concrete to improve the concrete pore structure, so that pore size can be specified and are oriented to improve the anti-doping nature of concrete, freeze-thaw resistance and durability.
5, effectively improve the concrete anti-corrosion properties of sea water and fresh water, resistance to sulfate corrosion. Particularly suitable for anti-sea engineering, underground engineering and road works.
6, can resist the alkali-aggregate reaction, significantly improve the ability of concrete alkali aggregate reaction.
7, increasing the concrete compressive, tensile, bending, shear strength, easy preparation of high-strength concrete.
8, water remains unchanged, it can be prepared plastic concrete, to avoid steel-intensive, vibrated to poor quality problems.
9, in the case of the same amount of water can make concrete flow pattern was shaped into the mold to reduce the concrete pump, piping and die wear and tear and prolong their useful life.
10, can be prepared masonry, plastering cement mortar, and low-grade cement. To meet the strength required in the circumstances, not only can save 30-70% of the cement, while increasing the construction operability.
11, applicable to the production of environmentally compatible materials and high-performance cement-based concrete admixture.
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blast furnace slag (ggbs) is the smelting of pig
As the iron species and composition of raw materials and changes in the operation of process factors, the composition and nature of the slag are also different. In accordance with the varieties of pig iron smelting, blast furnace slag can be divided into cast iron slag, steel slag and special pig iron pig iron slag. Accordance with the chemical composition of blast furnace slag in the amount of alkaline oxides. Blast furnace slag slag can be divided into basic, neutral and acid slag slag.
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Slag quality requirements
National Standards (GB/203-94) of the granulated blast furnace slag of the quality requirements are as follows:
1, granulated blast furnace slag mass coefficient K should not be less than 1.2; (enterprise internal control standards are not less than 1.6)
2, granulated blast furnace slag content of manganese compounds in order to MnO shall not exceed 4%, manganese alloy granulated blast furnace slag of MnO to allow the relaxation to 15%; sulfide content (in terms of sulfur) can not exceed 3%; fluoride content of (as fluorine dollars) shall not be greater than 2%;
3, granulated blast furnace slag loose capacity of not more than 1.2kg / L, maximum diameter of not more than 100mm, more than 10mm particle content (by weight) is not greater than 8%;
4, granulated blast furnace slag shall not be mixed with foreign inclusions, such as iron tip mud, without the massive quench slag, etc.;
5, slag without drying before the period of storage into the grains from the moment when liquid cooling is not appropriate for 3 months. ggbfs
Slag powder Quality Standard
National Standards (GB/T18045-2000) <used in cement and concrete in the granulated blast furnace slag powder "provides as follows:
1, granulated blast furnace slag powder (referred to as slag) Definitions; GB/T203 meet standard requirements of the granulated blast furnace slag by drying, grinding (or adding a small amount of gypsum grinding together) to achieve a considerable fineness, and in line with the corresponding activity index powder, slag grinding Tokimitsu Xu adding grinding aids, by adding the amount of not more than 1% of the quality of slag powder;
2, slag powder density of not less than 2.8g/cm3; than the surface area of not less than 350m2/kg; (corporate internal control standards: not less than 400m2/kg.)
3, slag powder is divided into three, S105, S95, S75, their corresponding activity index 7 days is not lower than 95%, 75% and 55%, 28 days is not less than 105%, 95% and 75%, mobile Ratio is less than 85%, 90% and 95%.
4, slag powder moisture content less than 1.0%. 5, sulfur trioxide is not greater than 4.0%.
6, ion is not more than 0.02%. 7, loss on ignition is not more than 3.0%.
Main features:
● reduce the slump loss ● ● greatly enhance the durability of concrete in concrete significantly enhance the role of
● Excellent ● Reinforced Concrete alkali-aggregate inhibitors, corrosion resistance ● improve the pumpability of concrete ● reduce the bleeding of concrete
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Utilization of blast furnace slag
Blast furnace slag can be used a variety of processes with multiple applications processed into a valuable material. Processed into slag aggregates can replace the natural sand and gravel, as a concrete, reinforced concrete and prestressed concrete under No. 500 aggregate, the working temperature of 700 ℃ below the heat-resistant concrete aggregate, require abrasion resistance, non-slip of the highway, the car field, runway and other support materials, railway ballast, fill the trenches and in the foundation cushion fillers, sewage treatment and other media. Blast furnace slag with plenty of water quenching, the vitreous can be made with water-based fine-grained slag, the water potential performance of a hard gel, in the cement clinker, lime, gypsum, etc. under the action of stimulating agents, indicating water PS coagulation performance, and high quality raw material for concrete. China's cement production 70% a 80% mixed with different amounts of water residue. Slag can also be subjects for insulation material, wet grinding and wet grinding slag, concrete, and road works of fine aggregate; soil improvement materials.
Hot-melt expansion of slag can be processed into a porous slag by crushing, screening became concrete light orthopedics, but also includes processed into porous smooth surface, particles of varying sizes - expandable beads. Expansion beads are high-quality lightweight aggregate concrete than with the expansion of slag cement can save 20%; can be made of cement mixed materials, road materials, insulation materials.
Blowing with compressed air or high pressure steam injection hot-melt slag flow, slag can be prepared from cotton. As insulation, sound absorption, fireproofing materials, and so on.
Blast furnace slag can also serve as cast stone, glass, fertilizer, enamel, ceramic and other raw materials.
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Silica fume in 5 main function
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