And, preferably, is to let the hair hang down naturally back better, to look inside the hair pulled straight Oh, it will be more. If you can pull someone around to help pull the best. Lawin it should not run into the water, so that come to naught pull.
increasing the concrete compressive
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.
admin 发表于 2009年11月26日 星期四
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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.
admin 发表于 2009年11月20日 星期五
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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.
admin 发表于 2009年11月7日 星期六
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Silica fume in 5 main function
Silica fume in 5 main function 1, the control of concrete materials, segregation and bleeding, reduce or avoid the emergence of concrete cellular, Ma face, weak interlayer, skin defects such as cracks and milk. 2 and improve the compressive strength of concrete, experimental proof of silica powder can greatly increase the strength of concrete. 3, to improve the durability of concrete to improve concrete's impermeability, frost resistance, abrasion resistance and corrosion resistance of 4 to improve the anti-carbonization of concrete for the reinforced concrete, mixed with silica powder can increase inequality between the matrix and the reinforcement The bond strength, but also enhance the capacity of steel resistance to corrosion. 5, to improve the mobility and dense refractories increased the levels of refractory high-temperature strength and thermal shock resistance.
admin 发表于 2009年11月2日 星期一
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Micro-silica component indices
Micro-silica component indices Popularization and application of micro-silica, marking China's construction industry and ceramic production into high-tech refractory period, 80 years, due to the application of micro-silica powder has also led to other applications, with the development of the market changes, The construction industry, ceramics and refractories demand increasing, micro silica fume of its special physical and chemical properties will be subject to City Market is more pro-gaze, very broad application prospects. In recent years, micro-silica fume in the construction and building materials industry applications, to achieve Very good results, its use more and more broad. After the infiltration of silica fume cement concrete can well fill in the gaps among the cement, so that more micro-density slurry, in addition, With the dissociated Ca (OH) combine to form a stable calcium silicate hydrate 2CaO.SiO2. H 2O, the hydrates, condensate Gel strength is higher than Ca (OH) crystals, mainly reflected in: (1) to increase its strength. Of the concrete compressive strength, flexural strength greatly increased, infiltration of 5-10% silica fume, Compressive strength can increase 10-30%, flexural strength increased by 10% or more; (2) increasing the density. Impermeability performance 5-18 times more resistant capabilities increased by 4 times: (3) Frost Resistance: micro silica fume concrete in 300-500 times through the cycle of fast-freeze solution, the relative elastic modulus Reduced 10-20%, while the ordinary concrete by 25-50 cycles, the relative elastic modulus reduced to 30-73% ; (4) The early strength of: micro silica fume concrete to shorten the induction period, with early strength of character; (5) Anti-abrasion, cavitation control of: micro silica fume concrete abrasion-resistant than ordinary concrete ability to increase 0.5-2.5 Times, anti-cavitation ability to increase 3-16 times.
admin 发表于 2009年10月29日 星期四
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silica fume, also known as silica fume, microsilica or silica fume
Silica fume silica fume, also known as silica fume, microsilica or silica fume. Division I professional production of 92 - 97% silica fume silica fume (micro silica / silica / silica fume), widely used in refractory material and concrete industries. Company has established its own silica fume silica fume (microsilica / micro silica / silica fume) production base, the current annual output of silica fume (microsilica / silica / silica fume) scale of 10,000 tons, the scale is still expanding . Since the collection of more advanced, my company's "micro-silica powder" (microsilica / silica / silica fume) and high content of SiO2, and other indicators are also extremely good, micro-silica fume (microsilica / silica / silica fume ) product quality and stability. Yet developed a special micro-silica refractories (microsilica / silica / silica fume), the SiO2 content of 94% or more to ensure generally maintained at around 97%, to the use of micro-silica refractories (microsilica / silica / silica fume) and national-level criteria. My company Silica Fume (microsilica / silica / silica fume) concentrations are found in 92%, and 70% in the 0.1um particle size below a maximum of not more than 0.3um. Silica Fume (microsilica / silica / silica fume) is widely used, such as Ertan power station, Higuchi power stations, water conservancy and hydropower projects such as the Qinghai-Tibet railway, railways, civil construction, bridges, refractory materials, cement and precast, paints, paint, rubber, etc., well received by the users.
admin 发表于 2009年10月28日 星期三
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Slag
(A) also known as the leaching residue. Uranium ore (or ore) in acid or alkali leaching process of leaching is not acid or alkali leaching of that part of the mineral. Due to the selective leaching process, most of the gangue minerals remain in the slag. There were also some have been acid leaching into the solution of the impurity ions (eg Fe3 +), due to lower acidity of leaching solution, but also the hydrolysis precipitation into the slag being undone. In order to prevent leaching of uranium into the solution hydrolysis, leaching solution must maintain a certain amount of excess acid.
(B) molten blast furnace slag in the sudden cold, too late to form a glassy crystalline material. Was thin granular. Molten slag directly into the cooling pond known as water-quenching slag, commonly known as the water residue. After grinded slag, the activity of cement mixed material. SiO2 slag containing more acidic slag, containing Al2O3 and CaO and more for the basic slag. The activity of alkaline than acidic slag slag higher. Slag due to the water itself has a certain hard, not long-term storage. Slag
(B) molten blast furnace slag in the sudden cold, too late to form a glassy crystalline material. Was thin granular. Molten slag directly into the cooling pond known as water-quenching slag, commonly known as the water residue. After grinded slag, the activity of cement mixed material. SiO2 slag containing more acidic slag, containing Al2O3 and CaO and more for the basic slag. The activity of alkaline than acidic slag slag higher. Slag due to the water itself has a certain hard, not long-term storage. Slag
admin 发表于 2009年10月25日 星期日
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Silica fume mix
For the silica fume concrete mix design is primarily based on design requirements to determine the silica fume incorporation method, the best dosage silica fume, superplasticizer dosage and the optimal adjustment of sand and gravel materials, while the other according to ordinary concrete design methods.
a) silica fume incorporation method: silica fume in concrete are generally two ways: First, doped within a second, Mixed, must be used in conjunction with the water reducer. Within the mixed method is often used instead of cement, silica fume, is divided into equal parts to replace, and replace the two kinds of contour, contour instead replaced by an equivalent dosage of silica fume cement, some substitute for 1 kg silica fume instead of 1 ~ 3 kg of cement, As a study of a general dosage of 5% ~ 30%, water-cement ratio has remained generally the same: the Law refers to the suits the doped silica fume as admixture in concrete as mixed, while cement consumption is not reduced dosage is generally 5% ~ 10%, generally derived from outside the mixed method of the mechanical properties of concrete is much higher, but increased the amount of cementitious materials in concrete.
b) silica fume is often controlled at the optimal dosage of 8% ~ 10%. It is based on silicon powder used in cement and the aggregate nature of the species, and to consider the extent of its performance improvement and construction of convenience or not, and the technical and economic indicators.
c) The best superplasticizer dosage: the use of silica fume in concrete, such as the non-doped water-reducing agent, want to maintain the same fluidity, it is bound to increase in water consumption, water-cement ratio increased, silica fume concrete strength do not go up, this is the past, silica fume in concrete are not promoting the use of reason. Joint use of silica fume and superplasticizer mixed with silica fume water-cement ratio remains unchanged, that is not to increase water consumption, but also can achieve with non-doped silica fume concrete with the same fluidity and strength of silica fume concrete performance is greatly improved generally more use of domestic naphthalene superplasticizer, such as the construction of 1, H, DH3, FDN, NF, N2B, with its dosage is generally 1% of the amount of plastic material within, and sometimes in order to reduce the water-cement ratio, mixing system for ultra-high strength concrete, water-reducing agent dosage up to 2% ~ 3%.
d) aggregate amount of adjustments: silica fume was generally do not have to adjust the amount of sand and gravel. Mixed with silicon powder and silicon powder to be deducted an equal volume of sand size.
admin 发表于 2009年10月22日 星期四
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Silica fume in the material Industry areas
Silica fume in the material Industry areas:
(1) high-end high-performance low-cement refractory casting materials and prefabricated parts, service life is three times the ordinary castable, refractoriness increase of about 100 ℃, high temperature strength and thermal shock resistance are all improved significantly. Has been widely used in: coke, iron, steel, rolled steel, nonferrous metals, glass, ceramics and power generation industries. (2) Large-scale iron and steel package Ditch materials, ventilation tiles, painting repair materials.
(3) self-flow casting refractory materials and construction of dry and wet spray application.
(4) oxide bonded silicon carbide products (ceramics kiln kiln, separated flame board, etc.).
(5) The high temperature calcium silicate insulation materials, light.
(6) electric kilns with corundum mullite push plate.
(7) high-temperature wear-resistant materials and products.
(8) corundum, and ceramics.
(9) Sialon-products. In addition to casting refractories currently in widespread use outside, in the fused and sintered refractories also received a large number of applications.
(1) high-end high-performance low-cement refractory casting materials and prefabricated parts, service life is three times the ordinary castable, refractoriness increase of about 100 ℃, high temperature strength and thermal shock resistance are all improved significantly. Has been widely used in: coke, iron, steel, rolled steel, nonferrous metals, glass, ceramics and power generation industries. (2) Large-scale iron and steel package Ditch materials, ventilation tiles, painting repair materials.
(3) self-flow casting refractory materials and construction of dry and wet spray application.
(4) oxide bonded silicon carbide products (ceramics kiln kiln, separated flame board, etc.).
(5) The high temperature calcium silicate insulation materials, light.
(6) electric kilns with corundum mullite push plate.
(7) high-temperature wear-resistant materials and products.
(8) corundum, and ceramics.
(9) Sialon-products. In addition to casting refractories currently in widespread use outside, in the fused and sintered refractories also received a large number of applications.
admin 发表于 2009年10月20日 星期二
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