Grey Ordinary Portland Cement from China

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Product Description:

Specification of Cement

No


Detail


result

I

Chemical test

1

Loss on Ignition

%

2.0 ÷ 4.0

2

Insoluble Residue

%

0.3 ÷ 2.5

3

SiO2

%

19.0 ÷ 22.0

4

Al2O3

%

4.0 ÷ 6.0

5

Fe2O3

%

2.5 ÷ 3.5

6

CaO

%

61.0 ÷ 67.0

7

MgO

%

1.0÷ 4.0

8

SO3

%

1.6÷ 2.2

9

Free lime

%

0.3 ÷ 1.5

10

Toltal alkali, (Max)

%

0.75

11

(C3S + C2S), (Min)

%

54.0

12

C3A, (Max)

%

2.5 ÷ 3.5

14

C4AF, (Max)

%

7 ÷ 11

15

False Set, (Min)

%

50

16

Chloride, (Min)

%

0.1

II

Physiscal test

9 ÷ 11

1

Fineness Blaine, ( Min)

cm2/g

3400

2

Soundness: Lecateller test, ( Max)

mm

5

3

Air content or mortar

%

5 ÷ 10

4

Autoclave Expansion

0.03 ¸ 0.20

5

Setting time, (Vicat test)

Initial,

Final,

min

110 ¸ 160

200 ÷ 300

6

Compressive Strength

3 days, (Min)

7 days, (Min)

28 days, (Min)

psi

2320

3480

5220



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Q:How long does it take cement to dry?
First of all it is concrete not cement and second of all it doesn't dry, it cures. It is a chemical reaction, it does not just simply dry out like mud brick. Given that, there are too many variables to take into account, thickness, environmental conditions, the exact formula of the concrete mix, etc.
Q:This year, steel, concrete, sand, stone and other building materials prices how, compared with last year is high or low? As long as probably, do not need too much can also,
According to the international market conditions, especially in the European market, the recent rupiah on the euro exchange rate continued to fall, short-term rebound may be, and its European steel market prices continue to rise, the above view the price of steel prices may rise
Q:The different meaning of Cement Clinker and Clinker?
Clinker is ground (usually with the addition of a little calcium sulfate) to become Portland cement. It may also to be interground with other active ingredients to produce: blastfurnace slag cement pozzolanic cement silica fume cement Clinker, if stored in dry conditions, can be kept for several months without appreciable loss of quality. Because of this, and because it can easily be handled by ordinary mineral handling equipment, clinker is traded internationally in large quantities. The freight cost is much lower than that for the equivalent amount of finished cement. Cement manufacturers purchasing clinker grind it as an addition to their own clinker at their cement plants. Manufacturers also ship clinker to grinding plants in areas where cement-making raw materials are not available. Happy Holidays !
Q:how to paint house exterior which is cement plaster?
I have a cement shed and have found masonry paint to be the only type that will last more than a year or two. Wal-mart has a cheap, good masonry paint that can be tinted any color. I've had cheap Wal-mart masonry paint on my shed for 5 years now and there's no sign of a need to repaint, yet,
Q:Cement or Concrete?
About the only suggestions I can give you is to put a descent amount of granite gravel in with the cement and to mix it a little on the dry side. If you notice, old concrete from around the 1940's and earlier tends to hold up better than newer concrete. If you look at the old concrete in relation to new concrete it has larger gravel in it and it has more granite gravel in it. You don't want to put gravel such as limestone in it. Limestone will cause the concrete to break up during winter. A trick I learned off of a friend of mine who worked for a concrete company is to mix concrete on the dry side. A dryer concrete mix instead of a soupy one will tend to be stronger and last longer.
Q:does quarry dust have cements properties?
Ideally what you want to have is a wide range of aggragate sizes for the best concrete, with a good variation in sizes from small to large. It seems to me that if you took the quarry dust and mixed it towther with a latex fortifier and portland cement you could make a good thinset mortar, which would be better suited for thinner applications and small cracks and joints.
Q:What glue will permanently bond rubber to cement?
First of all, I have never seen a horse with rubber shoes. Only get aluminum if your horse is a really good mover. The aluminum is lightweight and is usually used by hunters so they can move with less knee action. However, aluminum is not as sturdy. Steel shoes are much better for your horse. If you show regularly you can get aluminum just for the show then switch back to steel, a ton of people do that. I get whatever shoe the farrier says, because that is what is best for your horse. My horse has a really slight clubbed hoof so we have to shoe him as if he has a quarter crack (even though he doesnt) just to be safe. It is not as much about the material of the shoe that factors how often your horse should get shod, it also depends on how quickly your horse's feet grow out.
Q:How do you fill a tire with cement?
first you have to get the tire off of the rim. Then stand the tire on edge and fill the bottom half with cement. Let cure overnight and do the other half.
Q:how about zhuzhou Jingzuan cemented carbide Co., Ltd?
I am working in Zhuzhou Jingzuan! i know exactly what they are. they are a new Chinese Company, set up at 2009. before 2009, they are known as Zhuzhou Jingcheng. they are dealing with cemented carbide products: CNC inserts, mining tips, end mill, carbide rods, and tungsten bar,tungsten board. and from 2009 to 2012, they are only sale within China, after May 2012, they begin open their international markets. and what kinds of info do you want to know? you can write to me Jingzuan.bigel@yahoo.cn
Q:How do i remove cement board from the top of ceramic tile?
NOT GONNA HAPPEN,THE ONLY WAY TO REMOVE THE CEMENT IS BY FORCE AND WHEN FORCE IS ADDED THEN THE TILE GETS BROKE,UNFORTUNITLY WHO EVER PUT THE CEMENT ON THE TILE DIDN'T HAVE ALOT OF FORTHOUGHT AS TO WHAT IF YOU WANTED THE TILE BACK AT SOME POINTIN THE FUTURE

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