Cement Grinding Aid DEIPA for Enhanced Strength and Performance

1. Introduction to DEIPA

DEIPA (Diethanol Isopropanolamine) is an organic amine compound commonly used as a cement grinding aid. It has excellent grinding aid and improves the early and late strength of cement.

It is a substitute for **TEA (triethanolamine) and TIPA (triisopropanolamine), especially in improving the late strength of cement.

Properties 

• Chemical formula: C7H17NO3
  
  
• Appearance: light yellow to colorless transparent liquid
  
  
• Solubility: easily soluble in water, with good dispersibility
  
  
• pH value (1% solution): 9-11

2. Effects and advantages of DEIPA

✅ Improve cement grinding effect

• Reduce the electrostatic adsorption between cement particles, reduce the agglomeration of fine powder, and improve grinding efficiency.
  
  
• Reduce the power consumption of the mill, increase the specific surface area and particle uniformity of cement.
  

✅ Improve cement strength (especially late strength)

• Early strength (1-3 days): slightly weaker than TIPA, but better than TEA.
  
  
• Late strength (28 days and above): significantly improved, equivalent to or better than TIPA.

✅ Reduce free lime in cement and improve hydration efficiency

• Promote the hydration of C₃S (tricalcium silicate) and C₂S (dicalcium silicate), improve cement coagulation performance and durability.
  
  
• Reduce the volume expansion problem caused by free lime and improve the stability of concrete.

✅ Excellent environmental performance

• Chlorine-free, low toxicity, low volatility, reduce corrosion to equipment, and be more environmentally friendly.
  
  
• Can partially replace TEA and TIPA, reduce total cost, and improve comprehensive cost performance.

3. Application areas

• Cement grinding aid: used alone or compounded with TEA and TIPA to optimize cement performance.
  
  
• Concrete admixture: Improve the early strength and durability of concrete.
  
  
• Other building materials applications: Suitable for gypsum board, refractory materials and other industries as a grinding aid and enhancer.
  

4. Recommended addition amount

• Grinding aid formula: DEIPA accounts for 5%-50% (overall mass of grinding aid).
  
  
• Cement content: 0.01%-0.2% (relative to cement mass).
  
  
• Optimal usage: The specific addition amount needs to be adjusted according to the cement type, formula and target performance, and 0.05%-0.15% is generally recommended.
  

5. Conclusion

DEIPA is an efficient and environmentally friendly cement grinding aid with excellent grinding aid, late strength improvement ability, and environmental protection.

It can partially or completely replace TEA and TIPA and has become an important choice in the cement grinding aid industry.