The construction and bridge industry is inseparable from concrete, and concrete is also necessary. Without concrete, we cannot build high-rise buildings. The concrete industry has become a very hot industry. However, due to its particularity, concrete is prone to bleeding due to temperature and other reasons. When making concrete, a special material is indispensable. It is an early-strength water-reducing agent. With its help, concrete with various special requirements can be made. So what is the main use of concrete early-strength water-reducing agent? What issues should be paid attention to when using it?
The price of concrete early-strength water-reducing agent is calculated according to its unit. Generally, the price per kilogram is 0.2-5 yuan. The range depends on the pricing of each manufacturer. In addition, you can also learn other knowledge about high-efficiency concrete water-reducing agents:
1. Application:
Suitable for all types of pumped concrete, large-volume concrete, viaducts, highways, and bridges , hydraulic concrete, especially suitable for key projects and concrete with special requirements. Used in large admixture concrete, it can improve working performance, reduce hydration heat release rate, avoid temperature stress cracks, improve fracture toughness and durability, etc.
2. Features:
1. High water reduction rate: when the slump is about 80mm, the water reduction rate can be more than 18%; when the slump is about 180mm When, the water reduction rate can be more than 22%;
2. Excellent early strength and late strength: the 28d strength can generally be increased by 25-45% compared with ordinary concrete, and the 90d strength is 20% higher than ordinary concrete;
3. Low slump loss: The slump-preserving ability is strong, and the slump of concrete will not be lost after 2 hours. It has strong adaptability to temperature and is almost unaffected by temperature changes;
4. High durability: This product can effectively reduce the water-cement ratio of concrete, improve durability, reduce shrinkage and creep deformation, and has Good ability to inhibit corrosion of steel bars;
5. Good workability: good resistance to bleeding and segregation; when used as a pumping agent, the pumping friction resistance is small and easy to pump;
6. Product adaptability is strong: the product is suitable for cement of various specifications and models, and is compatible with admixtures such as expansion agents and active admixtures such as fly ash. It has good adaptability, and its functions complement and stimulate each other;
7. Green and environmentally friendly products: This product does not cause pollution to the natural environment during the production process and complies with the ISO14000 national standard for environmental protection management.
3. Safety matters
1. The product is a weakly alkaline liquid, non-toxic, non-corrosive, and non-polluting to the environment. But it is not edible. When it comes into contact with the human body and eyes, it should be rinsed with clean water as soon as possible. If it causes allergies in some people, it should be treated promptly by a doctor.
2. The product should be stored in a covered container to avoid rain, leakage, mixing of debris, high temperature exposure and evaporation of water.
3. The product has corresponding material safety data sheet and safe transportation permit information, which can be obtained from the company when necessary. Liquid products: 200Kg drum or 1000Kg square drum.
4. The product should be stored away from direct sunlight and below freezing point. When new packaging is used, the storage stability in the original packaging can be maintained for 1 month; when packaged in turnover barrels or opened, the product should be put into use within 30 days.
IV. Usage methods and precautions
1. The commonly used dosage (by weight) is 1.1~1.5% of the cement weight. To prepare high-strength concrete above C50, the dosage can be Increase to 1.5-2.0%.
2. It can be added directly to the mixer to facilitate automatic measurement, but it should be fully shaken or stirred before use; appropriately extend the mixing time in the mixer to ensure that the water-reducing agent is evenly dispersed in the concrete.
3. The product can be mixed into concrete when mixing water is used, and the effect of mixing into concrete after the water is delayed is better.
4. The product cannot be mixed with other types of water-reducing agents, otherwise the overall performance of the water-reducing agent will be reduced.
5. Covering and watering maintenance should be started immediately after the final setting of the concrete. Surface covering and other measures should be taken during winter construction to prevent surface frost damage; for large flowing concrete, secondary plastering should be carried out in a timely manner according to specifications.
That’s it for the price and other knowledge of high-efficiency concrete water-reducing agent. Through the introduction of the article, I believe everyone will have a better understanding of the early-strength concrete water-reducing agent. If you plan to buy a high-efficiency concrete water-reducing admixture, you can find a manufacturer on the Internet that is moderately priced and of relatively good quality. You can also find the contact information of some manufacturers on the Internet according to your own needs. Talk to them to learn about the concrete early strength water-reducing admixture they produce and see if it meets your needs.
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