Main properties and parameters of early-strength superplasticizer:
1. The dosage is 0.5% of the weight of cement ~ 1%, the water reduction rate can reach 12% ~ 25%;
2. The early strength increases quickly, and the strength in 1 to 3 days can be increased by 60% compared with blank concrete. % or more;
3. The enhancement effect is obvious, and the 28-day strength can be increased by more than 15% ~ 40% compared with blank concrete;
4. When the cement dosage is the same and the strength is similar, the slump can be increased by 100 ~ 200mm;
5. In concrete Under the conditions of similar workability and strength, 10% ~ 20% of cement can be saved;
6. Using the super-doping method, C(60) ~ can be configured C(80) concrete (dosage 1% ~ 2%).
1. The dosage of early-strength high-performance water-reducing agent is 0.4% ~ 2.5% of the total weight of the cementitious material, and the common dosage is 0.8% ~ 1.5%. A concrete trial mix test should be carried out before use to obtain the optimal dosage.
2. Early-strength high-performance water-reducing agents cannot be mixed with naphthalene-based high-performance water-reducing agents. When using early-strength high-performance water-reducing agents, they must be Rinse mixers and mixer trucks that have used naphthalene-based high-efficiency water-reducing agents, otherwise the water-reducing effect may be lost.
3. When using early-strength high-performance water-reducing agent, it can be added directly in the form of original solution, or it can be prepared into a solution with a certain concentration and deducted The amount of water brought in by the early-strength high-performance water-reducing agent itself.
4. Since the water reduction rate of concrete mixed with early-strength high-performance water-reducing agent is relatively large, the slump is highly sensitive to water consumption. , water consumption must be strictly controlled during use.
5. The early-strength high-performance water-reducing agent has good adaptability to most cements, but the water-reducing rate may be low for individual cements. , the phenomenon of large slump loss. In addition, the fineness and storage time of cement may also affect the effectiveness of early-strength high-performance water-reducing admixtures. At this time, it is recommended to solve the problem by appropriately increasing the dosage or compounding other retardant components.
6. After adding early-strength high-performance water-reducing agent, the air content of concrete increases (generally 2% to 5%), which is beneficial to improving concrete Workability and durability. If you need to use it in steam-cured concrete or have other special requirements, please contact us and we will solve it for you in time.
7. Due to the small dosage and high water reduction rate of early-strength high-performance water-reducing admixtures, early-strength high-performance water-reducing admixtures are used to prepare C45 and above Various types of high-performance concrete can significantly reduce project costs and have significant technical and economic benefits; they are used to prepare concrete below C45. Although the cost of early-strength high-performance water-reducing agents is relatively high, they can be used by adding mineral admixtures. dosage, reduce the overall cost of concrete, and also have certain technical and economic benefits.
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