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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It all depends on the builder, and the part of the country. Where there is cold weather in the winter, you will find houses built with better insulation Whether or not a house has brick on the outside, is up to the builder, and often the buyer. If he orders it as a trim, the price is raised by the builder. Many homes are built with a stucco exterior. I have found them in California, Florida, and Texas.. and Arizona. It holds up to the element of heat, better than wood siding. All brick homes are well known in Texas. They serve to insulate the houses there, and holds in the coolness. All homes have air conditioning there. Swamp coolers are refrigeration with a water hose that makes a cooling breeze. Just the same, but the cost is much less than an A/C unit. So brick houses are not the commono dwelling, and where you find them, they are usually much more expensive that a wooden shake and shingle home.
Q:would the three elements which make up cement ever come together to form cement naturally?
Absolutely Yes. Calcite or calcium carbonate is a very common natural cement of many sedimentary rocks. Its chemical formula is CaCO3. So, you need CO2 from the atmosphere to be dissolved in the water (from the rain) to form the acid H2CO3 That's the main reason why rain is acid and not neutral (it has a pH about 5.5, but it gets even more acid when there is pollution). When this acidic rain reacts with the rocks, it leaches out Ca2+ (among many other elements) from the rock. When this water reaches saturation it will precipitate calcium carbonate, cementing the rock. So you have all this substances naturally occurring in the ground water. Note that all this chemical reactions occur at room temperatures. What the man does to produce cement is to heat up Calcium carbonate (CaCO3) (at very high temperatures, above 900 C) to produce CaO and CO2. The CO2 is lost to the atmosphere and you have a powder of CaO. If you add water to the CaO (which is very reactive) it will form again CaCO3 capturing the CO2 dissolved in the water. That's why if your concrete stays wet for long periods of time (when first mixed) it will be of a better quality and also it will not form if you are close or below the freezing point of water.
Q:How much cement would I need to make a 13 diameter stone?
If you are using only Portland cement and water in the 1:4 ratio for the reaction to complete properly, you will need 80% cement by volume. Very few applications use pure Portland Cement however. V(sphere) = (4/3)(pi)(r^3) r = d/2 = 6.5in V = (4/3)(3.14)(6.5^3) = 1150in^3 1150in^3(0.80) = 920in^3 of Portland cement One sack of Portland cement (94 pounds) is approximately 1 cubic foot which is 1728in^3 920/1728 = 0.53 or about 1/2 sack or 47 pounds of Portland cement. If you are using the traditional 1 : 2 : 3 mix of cement:sand:gravel, you use 1/6 cement, or 47/6 ~ 8 pounds. At 80% due to 1:4 water mix = 8(0.80) = 6.4 pounds. At 133 lbs/ft^3 or 0.077 lb/in^3, 1150in^3 weighs: 1150(0.077) ~ 89 lbs Your answer is then either 47 pounds of pure Portland Cement or 6.4 pounds as part of a 1:2:3 dry mix combined with water at a rate of 1:4 (the latter is the practical answer). 6.4/94 ~ 1/15 sack. Remember that these figures are based on general rules of thumb and do not take into account any particular service requirement. - .--
Q:Can I make white bricks by mixing calcined Kaolin with Portland cement?
Q:How do I use rubber cement?
When I've used rubber cement, I've applied a coat to both surfaces to be glued, let it dry until tacky ( when it no longer looks shiny and is slightly sticky to the touch) and then put them together. Putting them together is the tricky part: the rubber cement sticks right away, and it's hard to re-place whatever you're trying to glue, so you have to place the pieces correctly on the first try. I've never used a tool like that to smooth paper (correction: I've never smoothed paper, but when I've used a tool like that I've used it to make neat folds). I would guess the unpointed end, but past that I have no idea. Sorry. If you use the rubber cement properly you can just smooth the paper with your fingers as you glue it down, and you shouldn't need to use a tool at all. Good luck!
Q:Jordan 4 Black cement (2012)?
It'll bid in the last few seconds of an auction, helping to save you money and avoid shill bidding.
Q:Can you use Track spikes on cement?
That is not a good idea. You can get special kinds of spikes that let you run on cement, but those spikes are only meant for walking on cement. To break them in try SPRINTING on a track that will break them in fast. By SPRINTING i meant running will take longer to break them in, unless they are distance spikes. running with spikes on cement can cause you to slip and hurt your self survierily.
Q:how is strength of cement mixture affected when mixed with sand ?
we assume the cement (Portland cement) is of the correct ratio. we also assume we are talking about compressive strenght when we have just enough cement to fill the spaces between the rock we have reached the maximum strength. number 2. is no good as it reacts with the cement mixture number 4. allows for compression and cracking of the cement. number 3. .....pits i dont know what is pits number 1. is the same as rock ......the best here so .... the order my guess ....... 2,4,1
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You must love your pets very much to make them a nice place for burial. How do you feel about painting the tomb? If you paint the white cement tomb you will not smell any odor and it should stop the erosion of the cement. A good paint to try is Kilz. They have a line of paints and primers that offer superior coverage, mildew resistance and tough stain and odor blocking. I am sorry for your loss. I hope this helps.
Q:equipments used for cement making?
Cement is a fine, gray powder made out of fly ash, dolomite, marl and other ingredients. Cement is used to make CONCRETE and I believe that is what you are referring to when you say cement. Concrete is made from cement, fine aggregate(sand), coarse aggregate(gravel) and water. Other admixtures can be added to make the concrete perform in a given manner, ie: hot or cold temperatures, water reducers, accelerators and retarders. To call concrete cement would be like going to the store for a loaf of flour.(flour is the main ingredient in bread)

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