42.5 R/N Grey Ordinary Portland Cement

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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:Have you ever written in wet cement?
haha that's good..now i feel stupid for just writing my name. but let me tell you..next time i see wet cement..it's happening :P
Q:what is r.h cement & what is the grade of it?
For Rapid Hardening Cement ,grading is similar to O.P. cement(ordinary Portland cement) is M15,M20 is same. only initial final setting time is less.Strength of 28 days is considered for testing /Mix Designing.
Q:Cement Stain..?
go to Home depot or Lowe's any home store and get cement stain remover and get a metal brush... apply stain remover on the stain and let it set for 1 minute and star scrubbing do the same for about 2 more times and it should be fix
Q:Cement backerboard behind shower tile?
I carnt imagine how anything would rot behind tiles as the grout you need to use would be waterproof so im not too sure how anything could get behind there to rot them. Im no expert though, just done a lot of jobs on my home including tiling my bathroom.! We used plasterboard and tiled over the top.
Q:How long does it take cement to eat wood?
cement does not eat wood water sits in the hole you cemented and rots the wood
Q:How to fix a leaking cement birdbath in a non-toxic way?
They sell concrete patch in a tube. Any lumber or hardware store. Both kinds of tubes. The squeeze type and the kind you put in a caulking gun. Follow directions of course. Then just make sure it good and cured, then rinse it before use. As far as toxicity, you'll be ok. Besides, most small birds that would use your birdbath only lives a few years regardless.
Q:Cement Mix?
Let x = amount of pure cement (note that pure cement is 100% cement). You are given that 20 = amount of 25% cement. The new mixture (40% cement) will be x+20. Now insert the percentages. (100%)(x) + (25%)(20) = (40%)(x+20) 1x + 5 = 0.4x + 8 Subtract 0.4x from each side 0.6x + 5 = 8 Subtract 5 from each side 0.6x = 3 Divide both sides by 0.6 x = 3/0.6 x = 5 Answer: 5 pounds of pure cement
Q:My Sewer Pipe Is Clogged With Cement?
difficult point. search on to the search engines. just that can assist!
Q:anyone ever used cement blocks for fire pit?
Fire Pit Blocks
Q:What are the types of portland cement?
There aren't any types. Portland cement is Portland cement.

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