Grade 42.5 R/N P.O CMENT

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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

Q:I am putting in a small 12'x60' mobile home on the new property I just bought, to use as an office for my farm. Would I need to put a cement pad in for the home to sit on? Would it need to be the complete size of the mobile home i.e 12x60 or could I use smaller pads just where the wheels are going to sit?: Cement Pad

Q:What's the difference between concrete and cement?: What is the difference between cement and concrete? Although the terms cement and concrete often are used interchangeably, cement is actually an ingredient of concrete. Concrete is basically a mixture of aggregates and paste. The aggregates are sand and gravel or crushed stone; the paste is water and portland cement. Concrete gets stronger as it gets older. Portland cement is not a brand name, but the generic term for the type of cement used in virtually all concrete, just as stainless is a type of steel and sterling a type of silver. Cement comprises from 10 to 15 percent of the concrete mix, by volume. Through a process called hydration, the cement and water harden and bind the aggregates into a rocklike mass. This hardening process continues for years meaning that concrete gets stronger as it gets older. So, there is no such thing as a cement sidewalk, or a cement mixer; the proper terms are concrete sidewalk and concrete mixer.

Q:whats best to put over bumpy cemt keft from fake brickwall, not sheetrock, something else can paint. room is ground level, NOT BELOW GRADE. ALSO CAN COMM. INDOOR/OUTDOOR CARPET OVER PAD BE PUT ON CEMENT SLAB IN THIS ROOM, IS WHAT WAS THERE BUT OLD AND CRAPPY LOOKING. FLOOR IS 2-3 FT THINK, SEALED?????: you probably should have left the brick up and just painted it. cheapest and easiest way. I am assuming you are renting so you don't want to sink in a ton of money. Yes, comm. grade carpenting can go on cement floor.

Q:Why cement, red brick, steel bars in the second half of these building materials will be relative to the first half prices: First, the first half of the year in the rainy season, is not conducive to the construction, and most of the first half of the busy production, construction will be less; secondly, the summer power for the Gonggong grubs seaweed cut Wei public should be tense will also adversely affect the production of building materials

Q:this company is sale cemented carbide ,it seems ok ,but I want to know more information about this company .: 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

Q:i need to pour cement and it needs to set quickly (as the weather hasn't exactly been very dry recently).so i was wondering what would happen if i use club soda (carbonated water, with very little potassium citrate, far as i can tell) instead of ordinary tap water to the mix cement: Cement sets due to slow chemical reactions that occur naturally. Your proposal will not help at all, but would make it bubble and be weak. Just protect the wet cement as builders do eg tilted planks on bricks covered with hardboard or plastic sheeting, corrugated steel or similar

Q:They just put it on me, it worked just fine, then it came off on command without a trace (back in the 80's.) But I'm wondering what it chemically actually is.: It's called, simply enough, dental cement, but chemically, it's usually zinc phosphate. Sometimes the zinc phosphate is mixed with polyacrylic acid, creating polycarboxylate cement. and in response to the additional detail: I don't know how the zinc phosphate cement is removed, but for the carboxylate, they use organic acids (especially citric, I think).

Q:What is the difference between lime and cement in building materials?: What is the difference between lime and cement in building materials?

Q:testing cement resistor by mulitmeteror digital tester: Never heard of a cement resistor. Could be CERMET? But to test a resistor, connect the leads of the multimeter across it, (it has to be disconnected from any other circuit components) set the multimeter to the ohms mode. .

Q:I started to open a company. We are doing transportation and building materials. Think of a company name. Would like to ask you what name should you register the capital can be less? Can tax less? As far as possible can not be separated from the transport of building materials this lazy rough scratch Nao calcium stubble water long class. What kind of tax should be reported? The Please do not send some tax law in general? The company set up conditions ah ... ... straightforward some ... ... more: The name of your own name is, there is no limit, as long as the same industry can not be the same (I said the same range is very wide) there is the same is not allowed to take the rough scouring Nao calcium stubble in the water

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