portland cement 42.5N or R 32.5N or R 52.5N or R

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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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Q:components of cement?
food
Q:How do geologists tell the difference between natural and artificial (e.g. cement) rocks?
Cement/concrete has a distinctive appearance and chemical composition. That said certain brescias might fool you.
Q:How is cement made and what is in it?
Let's work backwards... CONCRETE is Cement, water, sand and aggregate (gravel or rock). When the water is added to the cement, sand and rock, it forms a chemical bond that turns it into concrete. It does not dry but rather cures. You can pour concrete under water. Mortar is cement, sand and water. No rock. It is used to bind brick together. So, Cement is the common item. Cement (also called Portland Cement - that name comes from it being similar to stone that comes from the Isle of Portland, in Dorset, England ) is made by heating LIMESTONE in a kiln, the result - called KLINKER - is then ground into a fine powder and some Gypsum is added. That is than bagged as Cement.
Q:Wil Ceramic tile stick to cement board with glue?
No. You don't use glue to put tile on cement board. You need tile mastic. Go to Home Depot or Lowes and get it in the tile section.
Q:temporary dental cement that burn my tongue?
Many temporary cements contain eugenol (clove oil) - which gives a tingling or slight burning sensation when in contact with skin. I have never seen it cause a burn mark though The most popular brand in the UK is Temp Bond
Q:how much does cement cost?
according to my calculations, the amount of concrete needed is the same cost as the amount of cubic dirt that lies underneath the soon to be conrete. i believe that in this state, the concrete will be need to be bought at as cheap a price you can get, dawwwg.
Q:Help on Cement Pricing?
I presume you want concrete, and not cement... I use a cheat method of figuring this, others may object. But a round object can be figured very close to accurate by figuring it like it's a square, and then subtract 1/5 from the result. For example, your 20' circle, figure 20' x 20' = 400 - 80 = 320' of concrete approx. There's 27 feet in a yard, so 320 divided by 27 = 11.85 yards. We'll round this up to 12 yards, and estimate the concrete delivered at $110 a yard, for an estimated total concrete cost of 12 x $110 = $1320. That's my guess.
Q:Can cement be mixed with sea water?
Yes, but it changes the chemical properties of the cement.
Q:How to start a cement factory?
Are you talking about a plant that supplies bags of cement mix like you'd buy at Home Depot, or a plant where you fill the cement mixer trucks and they go out and pour the stuff into whatever? Either way, the easiest way might be to find a defunct one and reopen it.
Q:How many days does it take a quick sand cement to achieve its' strength on a building, bridge.?

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