Pozzi-tive is a highly reactive metakaolin which is made of high quality kaolin. The best conditions for obtaining a highly reactive metakaolin have been discovered by Yillong Chemical’s scientists who reported values between 600-800⁰C

Pozzi-tive grades can react with calcium hydroxide which is the outgrowth of Portland cement in the course of hydrating and produce a new colloidal material so as to enhance the performance of concrete and mortar.

Water react with Portland cement and produce hydration calcium silicate, meantime it produces calcium hydroxide lime whose amount can take up 20-25% of cement weight after hydrating. The lime is very harmful to the structure of cement and concrete. But, if Pozzi-tive is mixed into concrete and mortar, it can react with dissociative lime and create new colloidal material. By this way, a series of problems such as efflorescence, penetration which is caused by lime can be eliminated. Pozzi-tive can react with lime whose weight is 1.6.

These products have high puzzolanic reactivity which increase the strength and durability of cement and concrete. Pozzi-tive series can be used in construction projects with complacency, e.g. bridge, dock, dam, mansion, highway, etc. times max.

The effect of the amount of Pozzi-tive added to concrete lime

Key benefits

  • High pozzolanic reactivity
  • Increase early age strengths
  • Enhance concrete durability
  • Cost effective
  • Low vapor and gas permeability
  • As white as white portland cement

Comparison table of Pozzi-tive and famous metakaolins

Key Benefits

  • Cement
  • Concrete
  • Mortar
  • Naval shipyards
  • Bridges
  • Dams
  • Highways
Typical properties

Items / Grades Pozzi-tive 1100 Pozzi-tive1100 W Pozzi-tive 1300 Pozzi-tive 1300 W Pozzi-tive 1400 SW
B Reaction value (mgCa(OH) /g) 2 1200 1200 1350 1350 1450
A Pozzolanic activity index (%) 118 118 120 120 122
Required water ratio (%) 100 100 110 110 110
Specific surface area (m2/g) 16 16 22 22 22
Average particle size (μm) 1.8 1.8 1.2 1.2 1.2
Brightness G.E. (%) 70 80 70 80 85
Loss of ignition (%) 0.5 0.5 0.5 0.5 0.5

A: “Pozzi-tive added, high and early age strength required concrete application” Replace 10% cement with Pozzi-tive. Water/cement ratio is accepted generally 0.5-0.55. If water/cement ratio is lower, the activity index will be higher.
B: According to Chapelle test.

Chemical components ratio (%)

Grades / Items SiO2 Al2O 3 Fe2O 3 TiO2 CaO Na2O K2O MgO
Pozzi-tive 1100 54±2 43±2 1.3 1.2 0.4 0.35 0.35 0.4
Pozzi-tive 1100 W 54±2 43±2 1.3 1.2 0.4 0.35 0.35 0.4
Pozzitive 1300 54±2 43±2 1.3 1.2 0.4 0.35 0.35 0.4
Pozzi-tive 1300 W 54±2 43±2 1.3 1.2 0.4 0.35 0.35 0.4
Pozzi-tive 1400 SW 54±2 43±2 1.3 1.2 0.4 0.35 0.35 0.4

Packaging

25 kgs multi layer paper/PE bag, 1000 kgs big bag.

Storage

Store in cool, dry and well ventilated areas. For more details, please refer to the material safety data sheet.