Polynaphthalene Sulfonate is the largest proportion of industrial naphthalene consumption in China. It is the production of high-efficiency cement water-reducing agents. Sodium Naphthalene Formaldehyde account for 85% of the total consumption of high-efficiency water-reducing agents. The export volume has increased unabated in recent years. With the development of engineering construction, the naphthalene-based water-reducing agent has a lot of room for development.
Naphthalene series superplasticizer is a non-air-entraining superplasticizer synthesized by chemical industry. The chemical name is Sodium Naphthalene Sulphonate Formaldehyde condensate, which has a strong dispersing effect on cement particles. It is the largest and most widely used high-efficiency water reducing agent in my country, accounting for more than 70% of the amount of water reducing agent.
Performance characteristics of naphthalene series superplasticizer:
1. When the concrete strength and slump are basically the same, the amount of cement can be reduced by 10-25%.
2. When the water-cement ratio remains unchanged, the initial slump of the concrete is increased by more than 10cm, and the water reduction rate can reach 15-25%.
3.Naphthalenesulfonate has significant early strength and strengthening effect on concrete, and its strength increase range is 20-60%.
4. Sodium Naphthalene Sulfonate Improve the workability of concrete and comprehensively improve the physical and mechanical properties of concrete.
5. Good adaptability to various cements and good compatibility with other types of concrete admixtures.
6.naphthalene sulphonate Superplasticizer especially suitable for use in the following concrete projects: liquid concrete, plasticized concrete, steam-cured concrete, impermeable concrete, waterproof concrete, natural-curing precast concrete, steel and prestressed reinforced concrete, high-strength ultra-high-strength concrete .
7. The slump loss of concrete is large over time, and the slump loss in half an hour is nearly 40%.
Precautions for the application of Polynaphthalene Sulfonate：
1. When using porous aggregate, Naphthalene Super Plasticizer is advisable to add water and stir first, and then add water reducing agent.
2. When the slump is large, the vibrating time should not be too long to prevent bleeding and stratification.
Post time: Sep-18-2021
