1. When the cement content is the same and the slump is similar to the blank concrete, the water consumption can be reduced by 10-15%, the 28-day strength can be increased by 10-20%, and the one-year strength can be increased by about 10%.
2. Cement saving When the strength and slump of concrete are similar, about 10% of cement can be saved, and 30-40 tons of cement can be saved by using 1 ton of water-reducing agent.
3. Improve the workability of concrete When the cement content and water consumption of concrete remain unchanged, the slump of low plastic concrete can be increased by about two times (from 3-5 cm to 8-18 cm), and the early strength is basically close to that of the unmixed concrete.
4. After adding 0.25% lignocelcium superplasticizer with retarding effect, when the slump of concrete is basically the same, the initial setting time of ordinary cement is delayed for 1-2 hours, the slag cement is 2-4 hours, the final setting time of ordinary cement is 2 hours, and the slag cement is 2-3 hours. If the slump is increased without reducing water consumption, or the same slump is maintained to save cement consumption, the setting time delay is greater than that of water reduction.
5. It can reduce the occurrence time of exothermic peak of early hydration heat of cement, which is about 3 hours for ordinary cement, about 8 hours for slag cement, and more than 11 hours for dam cement. The highest temperature of exothermic peak is slightly lower for ordinary cement, and less than 3 ℃ for slag cement and dam cement
6. The air content of concrete is increased. The air content of blank concrete is about 1%, and the air content of concrete mixed with 0.25% wood calcium is about 2.3%.
7. Reduction of bleeding rate Under the condition that the slump of the concrete is basically the same, the bleeding rate of calcium lignosulphonate can be reduced by more than 30% compared with that of the concrete without calcium lignosulphonate. Under the condition that the water-cement ratio remains unchanged and the slump is increased, the bleeding rate also decreases due to the hydrophilic property of calcium lignosulphonate and the introduction of air.
8. Compared with those without water-reducing agent, the dry shrinkage performance is basically close to or slightly decreased at the initial stage (1-7) days, and slightly increased at the later stage (except for those saving cement), but the increase value is not more than 0.01% (0.01mm/m).
9. Improve the compactness and impermeability of concrete. From B=6 to B=12-30.
10. It does not contain chlorine salt and has no corrosion hazard to reinforcement.
Post time: May-16-2023