1. Product Introduction:
This product is an anionic surfactant, which can significantly reduce the surface tension of concrete. It has the characteristics of no chlorine, low alkali, water reduction, retardation, and small slump loss. Adding this agent can improve the fluidity and plasticity of concrete, reduce bleeding and segregation, and increase the flexural strength by 10%-20%. The thermal diffusion and thermal conductivity of concrete mixed with this agent are reduced, and the volume stability of concrete and the weather resistance of various outdoor structures are improved. Air-entraining water-reducing agents are widely used in water conservancy, bridges, and road concrete, which is beneficial to extending the service life of roads. The significant advantage of air-entrained concrete is that it greatly improves durability, frost resistance and salt freeze resistance. The appropriate air content for concrete with frost resistance and durability requirements is 3-5%, and the air content should not be too large.
2. Scope of application
It can be used for concrete with high requirements on freeze-thaw resistance, anti-seepage concrete, sulfate-resistant concrete, severe bleeding concrete, lean concrete, lightweight aggregate concrete, and artificial aggregate preparation. concrete, ordinary concrete and concrete with high requirements for finishes. Concrete structures with high requirements on durability (especially frost resistance). Such as dams, airport runways, high-grade concrete road surfaces, cooling towers, pools, port engineering and offshore structures, etc. In the northern region, concrete roads and bridges built with ice and salt are being removed. Concrete projects with high requirements on construction and workability.
3. Implementation standard: GB8076-1997
4. Dosage and usage
1. The dosing amount is 1.0-1.5% of the cement weight. The user can determine the dosing amount based on the test. The dosage can be adjusted according to suitability.
2. Concrete mixed with this agent must be mechanically mixed, and the mixing time should be ≥3 minutes. The parking time from discharging to pouring of the concrete mixture mixed with this agent should not be too long. When using plug-in vibration, the vibration time should be ≥20S
5. Packaging, transportation and storage
This product is laminate Packed in woven bags, 40 ± 0.25 kg per bag. Hooks are strictly prohibited for transportation. Pay attention to moisture-proof and sun-proof storage. The shelf life is two years. </p
JH-202 air entraining water reducing agent
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