I. Introduction: This product complies with the national standard of concrete admixture GB8076-97 and building materials industry standard JC473-2001, non-toxic, odorless, non-flammable, non-corrosive reinforcing steel. The main components of pumping agent is β-naphthalenesulfonate formaldehyde condensate and polybasic acid condensate, and compound to plastic, air bleed, retarding, pump and other components; with water, enhanced, plasticized, Plastic, slow-setting characteristics. Its chloride content and sulfate content is minimal, no corrosion of the steel harm, no adverse effects on concrete shrinkage, and good adaptability to Portland cement. According to the strength level of concrete required, technical requirements and construction conditions can be divided into ordinary type, early strength and high efficiency type three. Second, the main performance: 1, the product can significantly improve the fluidity and water retention of concrete, the concrete mix has a smaller frictional resistance, the basic separation does not produce the phenomenon of segregation, hydration heat is low, in a longer period of time Maintain good pumping performance. Dosage range: 1.5 ~ 3.5% (commonly used 2.0 ~ 2.5%) Recommended users should be based on raw materials and construction conditions, through the test to determine the best dosage. 2, efficient pumping agent, has a very high rate of water reduction, slump loss is minimal, the basic elimination of bleeding segregation phenomenon, its wide range of applications, not only can be easily formulated C40 ~ C60 medium and high grade concrete, And C60 or even C80 shrink-free self-leveling high performance concrete can be used 42.5 ordinary cement preparation, which can only be achieved by adjusting the dosage. Third, the technical indicators The main technical indicators Test items National standards (first-class goods) Factory technical indicators Model - saho-B Powder Agent dosage% 1.5 2.0-2.5 Slump increase value cm ≥10 ≥14 Atmospheric pressure bleeding ratio % ≤90 ≤70 Gas content% ≤4.5 ≤3.0 Slump retention value cm 30min ≥15 ≥16 60min ≥12 ≥14 Compressive strength ratio% 3d ≥90 ≥125 7d ≥90 ≥120 28d ≥90 ≥110 28D Shrinkage Rate% ≤135 ≤135 Corrosion of steel Description Stainless steel corrosion Has no rust Fourth, the scope of application: This product is suitable for commercial concrete, the need for long-distance transport or pumping, or poor construction conditions where pumping concrete Engineering, can be widely used in high-grade concrete, mass concrete, high-density concrete, high-rise buildings, bridges and deep tunnels and other concrete works. V. Usage and precautions: 1. The initial use should be based on the nature of the project, the purpose and site use of raw materials, construction conditions, such as the first trial, by comparing the technical and economic performance to choose better product prices, models and dosage . 2, according to the proportion of direct blending, mixed with concrete pouring agent to vibrate after compaction, not leakage, vibration, or vibration. 3, mixed with the agent can improve the plasticity of concrete admixture, thixotropy, the amount of water will be reduced accordingly, water-cement ratio should be controlled and slump, and to strengthen the early maintenance of concrete work, mixed agent of concrete Condensation should be promptly after watering conservation, to ensure adequate water on the concrete surface, conservation time of not less than 14 days, should strengthen the insulation during the cold season (such as covering straw bags, films, etc.).
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