Portland Cement from china in 50kg PP bags

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Portland  cement



I. CEMENT STANDARD

1.Vietnam standard (TCVN)

- Quality of Cement as per TCVN 6260 - 2009

2.European standard (EN)

- Certificate I -EN 197-1.2000- CEM II 42,5 R

- Certificate II - En 197-1.2000 CEM II 42,5N

- Certificate III - EN 197-1.2000 CEM I 42,5R

3.American standard (ASTM)

- ASTM C150 TYPE-1

- ASTM C1157 TYPE- GU

- ASTM C1157 TYPE- HE


II. SPECIFICATIONS FOR ORIDINARY PORTLAND CEMENT AS PER EN 197-1:2000/CEM II 42.5

Items

Units

Specification

Test Results

Test Method

SiO2

%

≤ 26.00

23.41

EN 196-2

Al2O3

%

≤ 6.50

5.50

Fe2O3

%

≤ 4.50

3.60

CaO

%

≥ 54.00

57.00

MgO

%

≤ 5.00

2.75

SO3

%

≤ 3.5

2.56

Loss on Ignition, (LOI)

%

≤ 10.00

7.00

Insoluble Residue

%

≤ 12

6.00

Physical and Mechanical Properties

Finess test

EN 196-6

-          Blaine

cm2/g

≥  3200

3800

-          Retained content on sieve 75mm

%

< 15.0

0.10

Time of setting

-                      Initial set

-                      Final set

Minutes

            ≥  75                      

< 420

145

200

EN 196-3

Soundness (LeChatelier)

mm

< 10.0

1.0

EN 196-3

Compressive strength

MPa

EN 196-1

2 Days

≥ 20.0

23.0

3 Days

-

27.0

7 Days

-

37.0

28 Days

≥  42.5

50.0



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Q:wat is elmer's rubber cement?
It's the cement you use to glue the h in there between the w a..ie.(What)
Q:how can i buy cement?
Have you thought about making your own? the procedure is fairly simple and the binder is not expensive. You can find the procedures for making concrete on the Internet for all sorts of strengths from mortar to 10k compression crete. Depending upon how much you need this may not be viable. The weight of concrete is such that it makes shipping to other countries highly unprofitable or vastly expensive.
Q:How do I stain cement for a modern office floor?
yes isure and want
Q:Which way is better to install steel posts for a fence, pounding them in or cementing?
Cement 4 sure..pounding them in is weak...not to even mention the added risk of breaking a gas line due to not being able to see what you are doing. Think about it ...with cement you have the added weight for strength...pounding them alone is weak.
Q:what is the chemical coposition of microsilica and how it react with cement?
Cement is made by heating limestone [CaCO3] with small quantities of other materials (such as clay) to 1450°C in a kiln, in a process known as calcination. The resulting hard substance [CaO], called 'clinker', is then ground with a small amount of gypsum [MgSO4.2H2O] into a powder to make 'Ordinary Portland Cement', the most commonly used type of cement (often referred to as OPC). Portland cement is a basic ingredient of concrete, mortar and most non-speciality grout. The most common use for Portland cement is in the production of concrete. Concrete is a composite material consisting of aggregate (gravel and sand [impure SiO2]), cement, and water. As a construction material, concrete can be cast in almost any shape desired, and once hardened, can become a structural (load bearing) element. Concrete consists of highly insoluble calcium silicates (CaO+ SiO2 -> CaSiO3). Now silica is pure SiO2 and so finely grounding it and putting into the concrete mixture instead of more coarse sand almost certainly results in a better product with better mixing and hence a stronger cement. This is an educated (I hope!) guess by an inorganic chemist. Cheers, dr p
Q:Can I attach a wooden wall to the cement foundation in my crawlspace?
Wood against the cement wall is not a good idea. Moisture from the ground usually seeps in through concrete, and evaporate from the floor. and the wood will soak it up, grow moldy and rot. If you are planning to use it for storage the best course of action would be to encapsulate it instead. That means lining the whole crawl space, floor and walls with a 20mil poly sheet (like a pool liner) specially developed for this purpose, and then install a conditioning system to blow air from the upstairs into the crawl, keeping it dry. Besides protecting your crawl space and stored items from moisture, termites etc... encapsulation makes your whole house at least 18% more energy efficient. It is recommended by the US Department of Energy's Building America as Best Practice. I am adding the link to Advanced Energy website. There you will find videos explaining the process and a ton of studies conducted by them on crawl spaces, as well as to another website about Crawl Spaces.
Q:When is cement supposed to solidify?
no mention about the use of sand in the cement powder .... it needs the sand to work properly and if it is overhead then it may never the solution you are seeking== don't touch and hope that it dries in a few days ... if it does get solid then it is t
Q:Company building decoration, with the cement and other building materials how to account? Into which subjects?
. such as the renovation fee is not, the cost can be charged. . if the size of the asset is not very small, then use the loan to buy the loan to buy the loan. The impact of equipment on your company should not be great. no problem.
Q:How much does it cost to pour cement?
to have someone come in and do it right it will cost about 7 dollars a sq. ft.
Q:which is heavier-sand,cement or water? please?
I thought it depended on how much you have of each Edit: Thank you Robert for making my point.

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