portland cement price for export

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Product Description

(1)Grade:  portland cement42.5(china standard GB175-2007)


(2)Packing : 50kg PP Bag,then into 1MT,1.5MT,2MT sling bagj

                   1mt,2mt jumbo bag


(3)Quantity: 100,000mt per month


(4)Loading port: rizhao /qingdao/longkou, china


(5)Payment: by irrevocable Letter of Credit at sight or TT


(6)Shipment: within 30 days after the date of L/C .


(7)Inspection: by CIQ


Cement Specifications: Type 1 425

Chemical composition

Amount

ISIRI389

Amount

ISIRI389

Silicon dioxide %SiO2

20.5 – 21.5

---

Insotuble Residue %I.R

0.30 – 0.50

<0.75

Aluminium Oxide %AL2O3

4.2 – 5.6

---

Free Lime %Free CaO

0.80 – 1.70

---

Ferric Oxide %Fe2O

3.00 – 3.60

---

Lime Saturation Factor LSF

93.0 – 95.0

---

Calcium Oxide %CaO

64.0 – 66.50

---

Silica Module SLM

2.30 – 2.50

---

Mangnesium Oxide %MgO

1.0 – 2.7

<5.0

Alomina Moddule ALM

1.1 – 1.3

---

Sulphur Trioxide %SO3

1.5 – 2.3

<3.0

Tricalcium Silicate %C3S

56.0 – 62.0

---

Potassium Oxide %K2O

0.60 – 0.75

---

Dicalcium Silicate %C2S

14.0 – 18.0

---

Sodium Oxide %Na2O

0.45 – 0.65

---

Tricalcium Aluminate %C3A

8.05 – 8.50

---

Loss On Ignition %L.O.I

0.90 – 1.60

<3.0

Tetracalicium Aluminoferri %C4AF

9.0 – 11.0

---

Physical Test

Unit

Amount

ISIRI389

Blaine Test

(Cm2/gr)

3200 -3400

>2800

Autoclave Expansion

(%)

0.09 - 0.20

<0.8

Setting Time:

Initial

(Minute)

105 - 160

>45

Final

(Minute)

135 - 300

<360

Compressive Strength:

After 3 Days

(Kg/Cm2)

230 - 260

>100

After 28 Days

(Kg/Cm2)

420 - 440

>425

Remarks:

LSF = 100 CaO/(2.80 SiO2 + 0.65Fe2O3 + 1.18Al2O3)

C3S = 4.07 CaO - (7.6 SiO2 + 6.718 Al2O3+ 1.43 Fe2O3 + 2.852SO3)

C2S = 2.867SiO2 - 0.754C3S

C3A=2.65 Al2O3 - 1.692 Fe2O3

C4AF = 3.043 Fe2O3



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