PORTLAND CEMENT P.O 42.5

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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:Should I be a Stonemason or a Cement Mason?
Not sure if this fits in Hobbies Crafts, but my impression is that a Stone Mason is a skilled profession requiring a fair amount of training to claim that title and a Cement Finisher is a far lower level common labor job - I had to do my own cement framing and finishing while redoing my garage in sections, and while I hated the work involved, I didn't encounter surprises from the information dragged from the Internet.
Q:dude how much does a 50 pound bag of cement usually cost?
A 12 X 8 is pretty big size, 96 square feet. If you want to use the bags, then on the bag it will tell you how many square feet it would cover. You would need at least 4 boards to build your frame, and then either re-bar or wire panels. The panels would be about $10.00 each. If it were me, I would build the frame and then call redy-mix company to come and pour the cement.
Q:how to break a cement wall with fist?
Easy ... You have a Cement wall ... On the oppisit side you have to cut X's and squares then put all pieces into a bucket. Hollow out the size of hole you want to make til its 1/4 of an thick. Then scar the inside from the center out like cracks... Then place the bigger pieces back in the hole. can hold them in with masking tape. Make sure you mark the spot to hit dead on... Also tape your wrist. Then Action ..... roll film...... Last you can do the about and use BRASS Knucles to make it easier....
Q:I want to make a DIY fishtank background out of styrofoam and cement?
Check out Fosters Smith aquarium catalog. There are special glues used for marine application. I don't think the the foam or cement will work. The fish will want to eat the foam and you will have to use a special type of cement that is non toxic. Try creating a rock wall with the marine glue. In addition you can make an interesting back drop that is placed behind the glass. Remember what ever you place in the tank will have to be removable so you can clean it. Fish dirt will collect in those areas with no filtration or current.
Q:I just accidently put some treated pine posts in pure cement instead of concrete., what can I expect to happen
THE CEMENT WILL SET UP--BUT NOT BE AS STRONG AS CONCRETE-BECAUSE IT DOESNT HAVE SAND AND GRAVEL--IT WILL CRACK AND THE POST WILL BECOME LOOSE-- IF THERE IS NO WEIGHT PUSHING ON THE FENCE--IT WILL PROBABLY BE ALL RIGHT
Q:Is carving your initials in cement illegal?
It's not unlawful to carve your identify on cement or tree. Simplest thing is that there will have to no longer be a notice forbidding it. It's customary to have your hand impressions on moist cement in Hollywood certainly of the celebrities. All people likes to peer himself on the mirror so usually and also his/her name/ initials written someplace. Many corporations have the house owners identify and so they carve the initials on the corporation buildings...
Q:how to counter a cement job in scholastic wrestling?
Every move has a different name, but judging from the description you gave me I think I know what you're talking about. To counter a cement job you have to pinch down on the arm, release it into the air, and break free. This is a hard move to counter because of the suppression on the throat, but can be done. If you are unsure what I mean by pinching the arm it's when your opponent has you in a headlock and is trying to punch through for the pin, tuck the arm he is trying to punch through with into your body. This will cause pressure, and he will be unable to run it correctly. My favorite move is the cement job =)
Q:what are the best roller derby wheels for cement?
it depends....is the cement painted or polished? is it usually dirty? these can make it much more slippery than it would be if it is none of these. I skate on a polished cement track which was covered in epoxy and is super slippery. I use Sugar hybrid wheels because they are super grippy. If the cement isn't polished you should probably use harder wheels.
Q:cement ratio?
I use a 5 to one ratio (five parts gravel, one part cement) the gravel is 60/40 (I assume that is 60 percent sand, 40 % rocks) The moisture content of gravel varies, so difficult to give amount of water.
Q:What is the most common cement used in concrete?
its called portland cement

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