Different water reducing rates
The water-reducing rate of polycarboxylic acid-based water-reducing agents is significantly higher than that of naphthalene-based water-reducing agents. Under the condition of exceeding the same water-reducing rate, the dosage of polycarboxylic acid-based water-reducing agents may be smaller than that of naphthalene-based water-reducing agents; in addition, as the dosage increases, the ultimate water-reducing rate of polycarboxylate water-reducing agents far exceeds that of naphthalene-based water-reducing agents, while the dosage of naphthalene-based water-reducing agents exceeds the limit when the dosage is around 2.0%, which shows that polycarboxylate water-reducing agents are more suitable, it is more suitable to make low water-cement ratio high-strength concrete.
Different mechanisms of action
The mechanism of action of polycarboxylate water-reducing agent is mainly based on steric repulsion. In addition to steric repulsion, it also has a strong air-entraining isolation “ball” effect and the effect of reducing solid-liquid interface energy; the naphthalene series water-reducing agent has The mechanism of action is mainly electrostatic repulsion, and there are almost no other beneficial effects on water reduction.
Comparing polycarboxylate water-reducing agents and naphthalene-based water-reducing agents, which one is better ?
• rom the perspective of usability, superplastiċizzant tal-polycarboxylate has strong plasticity retention and can effectively control the loss of slump over time without having much impact on the hardening time of concrete. It has a large reinforcing effect and has shrinkage resistance, which can more effectively improve the impermeability and frost resistance of concrete, and can improve the durability of concrete to a greater extent than naphthalene-based water reducing agents.
• From a price point of view, the price of naphthalene-based water-reducing agents is generally cheaper than that of polycarboxylate water-reducing agents. However, taking into account the dosage and use effect, the cost of using polycarboxylate water-reducing agents may be lower.
• From the perspective of environmental protection performance, the production process of naphthalene-based water-reducing agents has certain pollution to the environment, while polycarboxylate water-reducing agents adopt environmentally friendly green synthesis production processes, which can save cement, improve concrete performance, and promote green concrete, Sustainable development of low-carbon concrete technology.
In summary, polycarboxylate water-reducing agents are better than naphthalene-based water-reducing agents. Polycarboxylate water-reducing agents are also a major trend in the development of water-reducing agents in the future.
It-tim tekniku professjonali tagħna huwa disponibbli 24/7 biex jindirizza kwalunkwe kwistjoni li tista 'tiltaqa' waqt li tuża l-prodotti tagħna.Aħna nħarsu 'l quddiem għall-kooperazzjoni tiegħek!