Grade 42.5 R/N Grey Ordinary Portland Cement

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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


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Q:Can Bees go through Cement?
carpenter bees chew the wood to make a hole. and no bees cant go through cement
Q:Flexible clay molds using rubber cement?
Rubber Cement Molds
Q:I would like to cement the floor of my unfinished basement.?
whoever you get to pour it will know what to order...i would order a 4000 lb. mix with fiber...since you are doing a basement floor , freezing and thawing wont be an issue...
Q:Do i have to put cement board behind tile on the wall?
Tape with CEMENT board tape also. I ve seen people use dry wall nylon tape but its not the same.A vapor barrier is required behind either. Suggestion .. Seal slate ( if it s a natural stone and not a slate looking tile) Seal once before installing and once after installing , it easy to do As far as spacing it personal choice. For a 12 x12 I use 1/4 in for a couple reasons..Size varies w/ all tile and it gives a bit more play when setting.
Q:Is the cement used for dental crowns antibacterial?
Hi, dental cements like GIC(glass ionomer cements), Resin cements help repel bacteria because of the fluoride release. They dont have antibacterial properties but only protects the tooth from adhering(sticking) bacteria. Zinc Phosphates with eugenol has bacteriostaric properties but it dissolves in saliva easily.
Q:The flue on my chimney does not go above the cement block. How can I put a chimney cap on?
You are thinking only of the ones that attach to the flue, there are some that address your issue.
Q:is cement a natural resource?
Additionally, you need to mine sand and gravel to make concrete
Q:what are effect of cement industry on environment?
it wont be long that we will put so much cement down that we will throw the earth off its axes and you wont have to ask these silly q anymore anyways so why bother
Q:how can i repair a cement block that a beam (2X12X16) rest on it.?
You did not give much info on the cement block just the beam. How big of a block are we talking about? What is the construction of the cement block? 2,000 psi? 2500 psi? How intense was the fire? Most fires will not hurt cement blocks. How much weight is this beam holding? After you take the burnt beam off you can make a better assessment on the cement block. I'm willing to bet my last dollar, it will hold up a new beam fine. Good Luck!
Q:Cement Needed for Porcelain Tile?
Sam e mail me back thru my avatar and we ll get to the bottom of this. Somethings wrong. I have questions for you. You say cement, is that cement for a mud bed? Or do you mean cement ( thin set) to glue the tile down with? Some things not right either way.. Once I know what was what I can give you very close estimates on what you need. Edit/add on If its thin set to glue tile down and you did it with no waste ( throwing a bit away at the end of the day) you ll use 8 1/2 50# bags.. Lets just round it to 10 - 50# bags to make it even.. I m going to go high on a price of 15$ a 50# bag of a white latex modified thin set.. Thats $150 when I went to school.. Now where he came up with 450$ is beyond me. Thats why I d like to know if its the thinset your saying or regular cement for a mud floor. Then he d have to add sand onto this because a proper mud job is 2ns sand and Type 1 Portland cement .. E mail me Sam GL

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