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Refractory material-High Alumina Cement CA50-G9
High Alumina Cement CA50-G9

CA-50-G9 is a type of high strength aluminate cement. Its production requires raw materials of high quality which must be well selected in order to reduce the impurities. After calcined in rotary kilns with perfect control of the temperature, the strength of CA-50-G9 is nearly doubled of that of CA-50-G5,that is, the compressive strength (3 day) of CA-50-G9 reaches to 85-95 MPa or even higher. Other physical characters are also improved. The quality is as good as that of overseas products or even better while the price is much lower.
    We have been producing CA-50-G9 aluminate cement in large scale with steady quality for both domestic and foreign markets and win praises of the buyers.
Name
Type
Mineral phases
Character anduses
Main phases
Secondary phases
CA-50-G9
high strength
CA

CA2
CT
C2AS

  ·Main phase is CA
  ·Rapid hardening and early strength
  ·Better setting time due to suitable mineral composition. Initial setting time is prolonged and final setting time is shortened. The shortened interval provides enough working time and reduces the maintaining time.
  ·Its capability and strength are more advanced than other aluminate cements.
  ·Used for bind of refractory material and building mortar coagulant.
  ·It is used abroad for readymade constructional structures to speed up construction in order to raise the working efficiency, shorten the time limit for a project, save time and money.
  ·It can be used in rush repairs, rush construction, sulphate-resistant projects, the projects in winter and so on.
 
Chemical Composition
Item Unit CA-50 GB201-2000 CA50-G9
Al2O3 % ≥ 50, ＜ 60 ～55
SiO2 % ≤ 8.0 ≤ 6.0
Fe2O3 % ≤ 2.5 ≤ 2.5
R2O % ≤ 0.4 ≤ 0.4
S(total sulfur) % ≤ 0.1 -
Cl % ≤ 0.1 -

 
Physical Property
Physical Property Unit CA-50 GB201-2000 CA50-G9
Fineness(0.045mm residue) % ＜20 -
Blaine m2/kg ≥300 ≥400
Setting time Initial min ≥30 ≥90
Final h ≤6:00 ≤6:00
Flexural strength 6h MPa 3.0 -
1d 5.5 ≥8.0
3d 6.5 ≥10.0
Compression strength 6h MPa 20 -
1d 40 ≥70
3d 50 ≥80
Note:*(　)According with the regulation of GB201-2000. We should offer the report of S,Cl contents, residue and 6h strength when the customer requires or the buyer and seller have the related agreement.
Test method
Chemical Composition: According with GB/T205 (with the exception of sulfur and chlorin).
Blaine: According GB/T8074.
Fineness: According with GB/T1345 with screen of 0.045mm.
Setting time: According with the addenda A of GB/TGB201-2000.
Strength: According with the amendment prescribe of GB/T17671 and GB201-2000. 
Packing
Adopted specified by GB9774 cement packing sack, 25kg or 50kg in PE bag with a complex bag of woven plastic and kraft paper outside. Other kind of bags can be supplied according with the agreements of the buyer and the seller.
Note
Keep in dry conditions and prevent humidity during storage and transportation. Don’t mix with other variety of cements.
 
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